
Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months. The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even... *Router1:* C2811-Telecity#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down <=================== Hardware is Tunnel Description: TitanAir JTL Internet address is 192.168.55.82/30 MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 85.90.242.30, destination 197.232.31.83 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input 00:00:00, output 00:00:04, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 30 packets input, 1680 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 31 packets output, 1808 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out C2811-Telecity#ping 197.232.31.83 so 85.90.242.30 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds: Packet sent with a source address of 85.90.242.30 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms C2811-Telecity#sh running-config interface tunnel 49 Building configuration... Current configuration : 312 bytes ! interface Tunnel49 description TitanAir JTL bandwidth 512 ip address 192.168.55.82 255.255.255.252 ip access-group Kenya in ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 85.90.242.30 tunnel destination 197.232.31.83 tunnel key XXXXXXXXXXX end *Router 2:* C1811-TitanAir#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down Hardware is Tunnel Description: Inet to TCRB Internet address is 192.168.55.81/30 MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 197.232.31.83, destination 85.90.242.30 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 207 packets output, 12306 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds: Packet sent with a source address of 197.232.31.83 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms C1811-TitanAir#sh running-config interface tunnel 49 Building configuration... Current configuration : 300 bytes ! interface Tunnel49 description Inet to TCRB ip address 192.168.55.81 255.255.255.252 ip access-group netbios out ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 197.232.31.83 tunnel destination 85.90.242.30 tunnel key XXXXXXXXXXXXXXX end -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."

Hi, Try remove the keep alive from one end and advice if the line protocol will come up. Wilber Sent from my iPhone
On 17 Oct 2015, at 11:59 AM, Odhiambo Washington via skunkworks <skunkworks@lists.my.co.ke> wrote:
Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months.
The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even...
Router1:
C2811-Telecity#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down <=================== Hardware is Tunnel Description: TitanAir JTL Internet address is 192.168.55.82/30 MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 85.90.242.30, destination 197.232.31.83 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input 00:00:00, output 00:00:04, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 30 packets input, 1680 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 31 packets output, 1808 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out
C2811-Telecity#ping 197.232.31.83 so 85.90.242.30
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds: Packet sent with a source address of 85.90.242.30 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C2811-Telecity#sh running-config interface tunnel 49 Building configuration...
Current configuration : 312 bytes ! interface Tunnel49 description TitanAir JTL bandwidth 512 ip address 192.168.55.82 255.255.255.252 ip access-group Kenya in ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 85.90.242.30 tunnel destination 197.232.31.83 tunnel key XXXXXXXXXXX end
Router 2:
C1811-TitanAir#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down Hardware is Tunnel Description: Inet to TCRB Internet address is 192.168.55.81/30 MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 197.232.31.83, destination 85.90.242.30 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 207 packets output, 12306 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out
C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds: Packet sent with a source address of 197.232.31.83 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C1811-TitanAir#sh running-config interface tunnel 49 Building configuration...
Current configuration : 300 bytes ! interface Tunnel49 description Inet to TCRB ip address 192.168.55.81 255.255.255.252 ip access-group netbios out ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 197.232.31.83 tunnel destination 85.90.242.30 tunnel key XXXXXXXXXXXXXXX end
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler." _______________________________________________ skunkworks mailing list skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
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Hi Wilber, That did not help actually. On 17 October 2015 at 15:27, Wilber <wilberwanjira@gmail.com> wrote:
Hi,
Try remove the keep alive from one end and advice if the line protocol will come up.
Wilber Sent from my iPhone
On 17 Oct 2015, at 11:59 AM, Odhiambo Washington via skunkworks < skunkworks@lists.my.co.ke> wrote:
Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months.
The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even...
*Router1:*
C2811-Telecity#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down <=================== Hardware is Tunnel Description: TitanAir JTL Internet address is 192.168.55.82/30 MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 85.90.242.30, destination 197.232.31.83 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input 00:00:00, output 00:00:04, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 30 packets input, 1680 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 31 packets output, 1808 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out
C2811-Telecity#ping 197.232.31.83 so 85.90.242.30
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds: Packet sent with a source address of 85.90.242.30 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C2811-Telecity#sh running-config interface tunnel 49 Building configuration...
Current configuration : 312 bytes ! interface Tunnel49 description TitanAir JTL bandwidth 512 ip address 192.168.55.82 255.255.255.252 ip access-group Kenya in ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 85.90.242.30 tunnel destination 197.232.31.83 tunnel key XXXXXXXXXXX end
*Router 2:*
C1811-TitanAir#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down Hardware is Tunnel Description: Inet to TCRB Internet address is 192.168.55.81/30 MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 197.232.31.83, destination 85.90.242.30 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 207 packets output, 12306 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out
C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds: Packet sent with a source address of 197.232.31.83 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C1811-TitanAir#sh running-config interface tunnel 49 Building configuration...
Current configuration : 300 bytes ! interface Tunnel49 description Inet to TCRB ip address 192.168.55.81 255.255.255.252 ip access-group netbios out ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 197.232.31.83 tunnel destination 85.90.242.30 tunnel key XXXXXXXXXXXXXXX end
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."
_______________________________________________ skunkworks mailing list skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."

Noticed this too on several tunnels since Friday afternoon. Provider must have been filtering GRE traffic. All my cases are on safcom though they are piggy riding on JTL for last mile. From: Odhiambo Washington via skunkworks [mailto:skunkworks@lists.my.co.ke] Sent: Saturday, October 17, 2015 11:59 AM To: Skunkworks Mailing List Subject: [Skunkworks] Weird VPN problem between Cisco Routers Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months. The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even... Router1: C2811-Telecity#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down <=================== Hardware is Tunnel Description: TitanAir JTL Internet address is 192.168.55.82/30 MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 85.90.242.30, destination 197.232.31.83 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input 00:00:00, output 00:00:04, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 30 packets input, 1680 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 31 packets output, 1808 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out C2811-Telecity#ping 197.232.31.83 so 85.90.242.30 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds: Packet sent with a source address of 85.90.242.30 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms C2811-Telecity#sh running-config interface tunnel 49 Building configuration... Current configuration : 312 bytes ! interface Tunnel49 description TitanAir JTL bandwidth 512 ip address 192.168.55.82 255.255.255.252 ip access-group Kenya in ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 85.90.242.30 tunnel destination 197.232.31.83 tunnel key XXXXXXXXXXX end Router 2: C1811-TitanAir#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down Hardware is Tunnel Description: Inet to TCRB Internet address is 192.168.55.81/30 MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 197.232.31.83, destination 85.90.242.30 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 207 packets output, 12306 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds: Packet sent with a source address of 197.232.31.83 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms C1811-TitanAir#sh running-config interface tunnel 49 Building configuration... Current configuration : 300 bytes ! interface Tunnel49 description Inet to TCRB ip address 192.168.55.81 255.255.255.252 ip access-group netbios out ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 197.232.31.83 tunnel destination 85.90.242.30 tunnel key XXXXXXXXXXXXXXX end -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."

Wash I had a similar issue but with Junipers. Have also reset the router on the other end? Firmware issue? Thanks On 19 Oct 2015 12:37 pm, "Tony Gacheru via skunkworks" < skunkworks@lists.my.co.ke> wrote:
Noticed this too on several tunnels since Friday afternoon. Provider must have been filtering GRE traffic. All my cases are on safcom though they are piggy riding on JTL for last mile.
*From:* Odhiambo Washington via skunkworks [mailto: skunkworks@lists.my.co.ke] *Sent:* Saturday, October 17, 2015 11:59 AM *To:* Skunkworks Mailing List *Subject:* [Skunkworks] Weird VPN problem between Cisco Routers
Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months.
The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even...
*Router1:*
C2811-Telecity#sh interfaces tunnel 49
Tunnel49 is up, line protocol is down <===================
Hardware is Tunnel
Description: TitanAir JTL
Internet address is 192.168.55.82/30
MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive set (5 sec), retries 10
Tunnel source 85.90.242.30, destination 197.232.31.83
Tunnel protocol/transport GRE/IP
Key 0x8XXXXXXX, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input 00:00:00, output 00:00:04, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: fifo (QOS pre-classification)
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
30 packets input, 1680 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
31 packets output, 1808 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
C2811-Telecity#ping 197.232.31.83 so 85.90.242.30
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds:
Packet sent with a source address of 85.90.242.30
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C2811-Telecity#sh running-config interface tunnel 49
Building configuration...
Current configuration : 312 bytes
!
interface Tunnel49
description TitanAir JTL
bandwidth 512
ip address 192.168.55.82 255.255.255.252
ip access-group Kenya in
ip mtu 1300
ip route-cache flow
ip tcp adjust-mss 1200
qos pre-classify
keepalive 5 2
tunnel source 85.90.242.30
tunnel destination 197.232.31.83
tunnel key XXXXXXXXXXX
end
*Router 2:*
C1811-TitanAir#sh interfaces tunnel 49
Tunnel49 is up, line protocol is down
Hardware is Tunnel
Description: Inet to TCRB
Internet address is 192.168.55.81/30
MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive set (5 sec), retries 10
Tunnel source 197.232.31.83, destination 85.90.242.30
Tunnel protocol/transport GRE/IP
Key 0x8XXXXXXX, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo (QOS pre-classification)
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
207 packets output, 12306 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds:
Packet sent with a source address of 197.232.31.83
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C1811-TitanAir#sh running-config interface tunnel 49
Building configuration...
Current configuration : 300 bytes
!
interface Tunnel49
description Inet to TCRB
ip address 192.168.55.81 255.255.255.252
ip access-group netbios out
ip mtu 1300
ip route-cache flow
ip tcp adjust-mss 1200
qos pre-classify
keepalive 5 2
tunnel source 197.232.31.83
tunnel destination 85.90.242.30
tunnel key XXXXXXXXXXXXXXX
end
--
Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."
_______________________________________________ skunkworks mailing list skunkworks@lists.my.co.ke ------------ List info, subscribe/unsubscribe http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks ------------
Skunkworks Rules http://my.co.ke/phpbb/viewtopic.php?f=24&t=94 ------------ Other services @ http://my.co.ke

Hi Tony, My tunnel hasn't come up even today. Did you have to call JTL to do something for yours to come up? It's weird that I can ping the souce/destination IPs assigned to the tunnels from both ends but the tunnel traffic is dead. Weirdly too, on one side when I do 'sh int tunnel XX' I see: C2811*-Telecity*#sh interfaces tunnel 49 Tunnel49 is up, line protocol is up While on the other end: C1811*-TitanAir*#sh interfaces tunnel49 Tunnel49 is up, line protocol is down On 19 October 2015 at 12:37, Tony Gacheru <tonygacheru@gmail.com> wrote:
Noticed this too on several tunnels since Friday afternoon. Provider must have been filtering GRE traffic. All my cases are on safcom though they are piggy riding on JTL for last mile.
*From:* Odhiambo Washington via skunkworks [mailto: skunkworks@lists.my.co.ke] *Sent:* Saturday, October 17, 2015 11:59 AM *To:* Skunkworks Mailing List *Subject:* [Skunkworks] Weird VPN problem between Cisco Routers
Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months.
The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even...
*Router1:*
C2811-Telecity#sh interfaces tunnel 49
Tunnel49 is up, line protocol is down <===================
Hardware is Tunnel
Description: TitanAir JTL
Internet address is 192.168.55.82/30
MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive set (5 sec), retries 10
Tunnel source 85.90.242.30, destination 197.232.31.83
Tunnel protocol/transport GRE/IP
Key 0x8XXXXXXX, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input 00:00:00, output 00:00:04, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: fifo (QOS pre-classification)
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
30 packets input, 1680 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
31 packets output, 1808 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
C2811-Telecity#ping 197.232.31.83 so 85.90.242.30
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds:
Packet sent with a source address of 85.90.242.30
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C2811-Telecity#sh running-config interface tunnel 49
Building configuration...
Current configuration : 312 bytes
!
interface Tunnel49
description TitanAir JTL
bandwidth 512
ip address 192.168.55.82 255.255.255.252
ip access-group Kenya in
ip mtu 1300
ip route-cache flow
ip tcp adjust-mss 1200
qos pre-classify
keepalive 5 2
tunnel source 85.90.242.30
tunnel destination 197.232.31.83
tunnel key XXXXXXXXXXX
end
*Router 2:*
C1811-TitanAir#sh interfaces tunnel 49
Tunnel49 is up, line protocol is down
Hardware is Tunnel
Description: Inet to TCRB
Internet address is 192.168.55.81/30
MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive set (5 sec), retries 10
Tunnel source 197.232.31.83, destination 85.90.242.30
Tunnel protocol/transport GRE/IP
Key 0x8XXXXXXX, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo (QOS pre-classification)
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
207 packets output, 12306 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds:
Packet sent with a source address of 197.232.31.83
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C1811-TitanAir#sh running-config interface tunnel 49
Building configuration...
Current configuration : 300 bytes
!
interface Tunnel49
description Inet to TCRB
ip address 192.168.55.81 255.255.255.252
ip access-group netbios out
ip mtu 1300
ip route-cache flow
ip tcp adjust-mss 1200
qos pre-classify
keepalive 5 2
tunnel source 197.232.31.83
tunnel destination 85.90.242.30
tunnel key XXXXXXXXXXXXXXX
end
--
Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."

I called safcom and this morning found them working. Nothing on my end From: Odhiambo Washington [mailto:odhiambo@gmail.com] Sent: Monday, October 19, 2015 3:50 PM To: Tony Gacheru Cc: Skunkworks Mailing List Subject: Re: [Skunkworks] Weird VPN problem between Cisco Routers Hi Tony, My tunnel hasn't come up even today. Did you have to call JTL to do something for yours to come up? It's weird that I can ping the souce/destination IPs assigned to the tunnels from both ends but the tunnel traffic is dead. Weirdly too, on one side when I do 'sh int tunnel XX' I see: C2811-Telecity#sh interfaces tunnel 49 Tunnel49 is up, line protocol is up While on the other end: C1811-TitanAir#sh interfaces tunnel49 Tunnel49 is up, line protocol is down On 19 October 2015 at 12:37, Tony Gacheru <tonygacheru@gmail.com> wrote: Noticed this too on several tunnels since Friday afternoon. Provider must have been filtering GRE traffic. All my cases are on safcom though they are piggy riding on JTL for last mile. From: Odhiambo Washington via skunkworks [mailto:skunkworks@lists.my.co.ke] Sent: Saturday, October 17, 2015 11:59 AM To: Skunkworks Mailing List Subject: [Skunkworks] Weird VPN problem between Cisco Routers Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months. The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even... Router1: C2811-Telecity#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down <=================== Hardware is Tunnel Description: TitanAir JTL Internet address is 192.168.55.82/30 MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 85.90.242.30, destination 197.232.31.83 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input 00:00:00, output 00:00:04, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 30 packets input, 1680 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 31 packets output, 1808 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out C2811-Telecity#ping 197.232.31.83 so 85.90.242.30 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds: Packet sent with a source address of 85.90.242.30 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms C2811-Telecity#sh running-config interface tunnel 49 Building configuration... Current configuration : 312 bytes ! interface Tunnel49 description TitanAir JTL bandwidth 512 ip address 192.168.55.82 255.255.255.252 ip access-group Kenya in ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 85.90.242.30 tunnel destination 197.232.31.83 tunnel key XXXXXXXXXXX end Router 2: C1811-TitanAir#sh interfaces tunnel 49 Tunnel49 is up, line protocol is down Hardware is Tunnel Description: Inet to TCRB Internet address is 192.168.55.81/30 MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (5 sec), retries 10 Tunnel source 197.232.31.83, destination 85.90.242.30 Tunnel protocol/transport GRE/IP Key 0x8XXXXXXX, sequencing disabled Checksumming of packets disabled Tunnel TTL 255 Fast tunneling enabled Tunnel transmit bandwidth 8000 (kbps) Tunnel receive bandwidth 8000 (kbps) Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo (QOS pre-classification) Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 207 packets output, 12306 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds: Packet sent with a source address of 197.232.31.83 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms C1811-TitanAir#sh running-config interface tunnel 49 Building configuration... Current configuration : 300 bytes ! interface Tunnel49 description Inet to TCRB ip address 192.168.55.81 255.255.255.252 ip access-group netbios out ip mtu 1300 ip route-cache flow ip tcp adjust-mss 1200 qos pre-classify keepalive 5 2 tunnel source 197.232.31.83 tunnel destination 85.90.242.30 tunnel key XXXXXXXXXXXXXXX end -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler." -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."

I am calling JTL and as usual, cannot find anyone on Tech Support. I have listened to their IVR until phone diconnected. On 19 October 2015 at 16:10, Tony Gacheru <tonygacheru@gmail.com> wrote:
I called safcom and this morning found them working. Nothing on my end
*From:* Odhiambo Washington [mailto:odhiambo@gmail.com] *Sent:* Monday, October 19, 2015 3:50 PM *To:* Tony Gacheru *Cc:* Skunkworks Mailing List *Subject:* Re: [Skunkworks] Weird VPN problem between Cisco Routers
Hi Tony,
My tunnel hasn't come up even today. Did you have to call JTL to do something for yours to come up? It's weird that I can ping the souce/destination IPs assigned to the tunnels from both ends but the tunnel traffic is dead.
Weirdly too, on one side when I do 'sh int tunnel XX' I see:
C2811*-Telecity*#sh interfaces tunnel 49
Tunnel49 is up, line protocol is up
While on the other end:
C1811*-TitanAir*#sh interfaces tunnel49
Tunnel49 is up, line protocol is down
On 19 October 2015 at 12:37, Tony Gacheru <tonygacheru@gmail.com> wrote:
Noticed this too on several tunnels since Friday afternoon. Provider must have been filtering GRE traffic. All my cases are on safcom though they are piggy riding on JTL for last mile.
*From:* Odhiambo Washington via skunkworks [mailto: skunkworks@lists.my.co.ke] *Sent:* Saturday, October 17, 2015 11:59 AM *To:* Skunkworks Mailing List *Subject:* [Skunkworks] Weird VPN problem between Cisco Routers
Woken up to a weird problem and it's driving me nuts.. This has been working until today. NO changes at all have been made in several months.
The tunnel has refused to come up for some strange reason. I have even rebooted the routers. One had been up for 1.5 years, even...
*Router1:*
C2811-Telecity#sh interfaces tunnel 49
Tunnel49 is up, line protocol is down <===================
Hardware is Tunnel
Description: TitanAir JTL
Internet address is 192.168.55.82/30
MTU 1514 bytes, BW 512 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive set (5 sec), retries 10
Tunnel source 85.90.242.30, destination 197.232.31.83
Tunnel protocol/transport GRE/IP
Key 0x8XXXXXXX, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input 00:00:00, output 00:00:04, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: fifo (QOS pre-classification)
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
30 packets input, 1680 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
31 packets output, 1808 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
C2811-Telecity#ping 197.232.31.83 so 85.90.242.30
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 197.232.31.83, timeout is 2 seconds:
Packet sent with a source address of 85.90.242.30
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C2811-Telecity#sh running-config interface tunnel 49
Building configuration...
Current configuration : 312 bytes
!
interface Tunnel49
description TitanAir JTL
bandwidth 512
ip address 192.168.55.82 255.255.255.252
ip access-group Kenya in
ip mtu 1300
ip route-cache flow
ip tcp adjust-mss 1200
qos pre-classify
keepalive 5 2
tunnel source 85.90.242.30
tunnel destination 197.232.31.83
tunnel key XXXXXXXXXXX
end
*Router 2:*
C1811-TitanAir#sh interfaces tunnel 49
Tunnel49 is up, line protocol is down
Hardware is Tunnel
Description: Inet to TCRB
Internet address is 192.168.55.81/30
MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive set (5 sec), retries 10
Tunnel source 197.232.31.83, destination 85.90.242.30
Tunnel protocol/transport GRE/IP
Key 0x8XXXXXXX, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo (QOS pre-classification)
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
207 packets output, 12306 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
C1811-TitanAir#ping 85.90.242.30 source 197.232.31.83
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 85.90.242.30, timeout is 2 seconds:
Packet sent with a source address of 197.232.31.83
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/188/188 ms
C1811-TitanAir#sh running-config interface tunnel 49
Building configuration...
Current configuration : 300 bytes
!
interface Tunnel49
description Inet to TCRB
ip address 192.168.55.81 255.255.255.252
ip access-group netbios out
ip mtu 1300
ip route-cache flow
ip tcp adjust-mss 1200
qos pre-classify
keepalive 5 2
tunnel source 197.232.31.83
tunnel destination 85.90.242.30
tunnel key XXXXXXXXXXXXXXX
end
--
Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."
--
Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254733744121/+254722743223 "I can't hear you -- I'm using the scrambler."
participants (4)
-
Jac
-
Odhiambo Washington
-
Tony Gacheru
-
Wilber