GSM Data Roaming Question
Good people.... small query here....that little GGSN & SGSN matter... 1. My mobile Phone Service provider issues me with a special APN SIM card (assigned a pre-defined range of IPs) 2. I roam on data into a different country... Who assigns me the IP when in the foreign country? Is it still my provider? And will I still be assigned an IP address in the pre-defined range I'm used to at home? Mwagiru, Kioko et al.... SOS! Tony.
Interesting. I would say it depends on the routing done between your (home) gsm provider and their (foriegn) roaming partners. Option 1: From an engineering perspective, it is easier and simpler to just issue you with the foreign partner IP address and have you connect to the Internet (locally through their PoP) Option 2: From a business point of view, it is better to route your packets back to your home country such that you connect to the Internet through the remote (home gateway); that way they can justify charging you hefty roaming fees ;-) Even more crafty would be to have Option1 (easier) but charge you as if you are using Option 2 (more profits). Personally I have no idea which option they implement though. GSM traffic tends to go through alot of black boxes unlike traditional ISP traffic. Would be nice to hear from the 'horses' mouth; the GSM techies themselves (assuming they can talk :-) walu. From: Tony Likhanga via skunkworks <skunkworks@lists.my.co.ke> To: Skunkworks forum <skunkworks@lists.my.co.ke> Cc: Tony Likhanga <tlikhanga@gmail.com> Sent: Tuesday, February 21, 2017 4:03 PM Subject: [Skunkworks] GSM Data Roaming Question Good people.... small query here....that little GGSN & SGSN matter... 1. My mobile Phone Service provider issues me with a special APN SIM card (assigned a pre-defined range of IPs) 2. I roam on data into a different country... Who assigns me the IP when in the foreign country? Is it still my provider? And will I still be assigned an IP address in the pre-defined range I'm used to at home? Mwagiru, Kioko et al.... SOS! Tony. _______________________________________________ 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
Tony, Without thinking so much about this and asking what it is you do with the IPs, I must say IP addresses are NOT portable outside a given network where they are assigned. You cannot say in Kenya, Zuku assigns you 1.2.3.4 routed for the purpose of some obscure services that you run in your Kenyan network and then expect to carry the router configured with Zuku IPs and still expect it to work in Safaricom network, for instance! Now extrapolate that to a foreign country. On 21 February 2017 at 16:03, Tony Likhanga via skunkworks < skunkworks@lists.my.co.ke> wrote:
Good people.... small query here....that little GGSN & SGSN matter...
1. My mobile Phone Service provider issues me with a special APN SIM card (assigned a pre-defined range of IPs)
2. I roam on data into a different country...
Who assigns me the IP when in the foreign country? Is it still my provider? And will I still be assigned an IP address in the pre-defined range I'm used to at home?
Mwagiru, Kioko et al.... SOS!
Tony.
_______________________________________________ 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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-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft."
Gang, The verdict on this is out! Turns out the SIM cards work just as they would at home! I've verified this physically.....down to the IP addresses assigned to them! I had consulted 2 other friends in 'knowledge street' and got these verbatim responses that may be of interest to some members... =============Knowledge Street1=============== *The APN is only known in your home network. * *The serving SGSN, visiting SGSN has to connect to your home APN DNS to resolve the APN so as to get which GGSN to create your session so as to obtain IP services. **Once the request is received by your home GGSN, the rest should just flow: IP address, billing, etc * =========================================== =============Knowledge Street2=============== *When you roam you will be attached to the SGSN in the foreign country, but the routing shall be done on your home GGSN; meaning that you will have an IP from the range provided in the roaming country* *Before attaching to the foreign SGSN, the foreign network does a check with your home network - subscriber validation.* *Since the routing shall point to your home GGSN which basically routes your APN range of IP's accordingly, you should be routed as if you were at home... also depends on the "APN related priviledges"* =========================================== Now we know. :-) :-) Tony. 2017-02-21 17:54 GMT+03:00 Odhiambo Washington <odhiambo@gmail.com>:
Tony,
Without thinking so much about this and asking what it is you do with the IPs, I must say IP addresses are NOT portable outside a given network where they are assigned. You cannot say in Kenya, Zuku assigns you 1.2.3.4 routed for the purpose of some obscure services that you run in your Kenyan network and then expect to carry the router configured with Zuku IPs and still expect it to work in Safaricom network, for instance! Now extrapolate that to a foreign country.
On 21 February 2017 at 16:03, Tony Likhanga via skunkworks < skunkworks@lists.my.co.ke> wrote:
Good people.... small query here....that little GGSN & SGSN matter...
1. My mobile Phone Service provider issues me with a special APN SIM card (assigned a pre-defined range of IPs)
2. I roam on data into a different country...
Who assigns me the IP when in the foreign country? Is it still my provider? And will I still be assigned an IP address in the pre-defined range I'm used to at home?
Mwagiru, Kioko et al.... SOS!
Tony.
_______________________________________________ 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 +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft."
Wonderful! Now we know! On 10 March 2017 at 21:27, Tony Likhanga via skunkworks < skunkworks@lists.my.co.ke> wrote:
Gang,
The verdict on this is out! Turns out the SIM cards work just as they would at home! I've verified this physically.....down to the IP addresses assigned to them!
I had consulted 2 other friends in 'knowledge street' and got these verbatim responses that may be of interest to some members...
=============Knowledge Street1=============== *The APN is only known in your home network. * *The serving SGSN, visiting SGSN has to connect to your home APN DNS to resolve the APN so as to get which GGSN to create your session so as to obtain IP services. **Once the request is received by your home GGSN, the rest should just flow: IP address, billing, etc * ===========================================
=============Knowledge Street2=============== *When you roam you will be attached to the SGSN in the foreign country, but the routing shall be done on your home GGSN; meaning that you will have an IP from the range provided in the roaming country* *Before attaching to the foreign SGSN, the foreign network does a check with your home network - subscriber validation.* *Since the routing shall point to your home GGSN which basically routes your APN range of IP's accordingly, you should be routed as if you were at home... also depends on the "APN related priviledges"* ===========================================
Now we know. :-) :-)
Tony.
2017-02-21 17:54 GMT+03:00 Odhiambo Washington <odhiambo@gmail.com>:
Tony,
Without thinking so much about this and asking what it is you do with the IPs, I must say IP addresses are NOT portable outside a given network where they are assigned. You cannot say in Kenya, Zuku assigns you 1.2.3.4 routed for the purpose of some obscure services that you run in your Kenyan network and then expect to carry the router configured with Zuku IPs and still expect it to work in Safaricom network, for instance! Now extrapolate that to a foreign country.
On 21 February 2017 at 16:03, Tony Likhanga via skunkworks < skunkworks@lists.my.co.ke> wrote:
Good people.... small query here....that little GGSN & SGSN matter...
1. My mobile Phone Service provider issues me with a special APN SIM card (assigned a pre-defined range of IPs)
2. I roam on data into a different country...
Who assigns me the IP when in the foreign country? Is it still my provider? And will I still be assigned an IP address in the pre-defined range I'm used to at home?
Mwagiru, Kioko et al.... SOS!
Tony.
_______________________________________________ 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 +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft."
_______________________________________________ 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 +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft."
The portability of the IP may be through a VPN back to the home network On Mar 10, 2017 10:51 PM, "Odhiambo Washington via skunkworks" < skunkworks@lists.my.co.ke> wrote:
Wonderful! Now we know!
On 10 March 2017 at 21:27, Tony Likhanga via skunkworks < skunkworks@lists.my.co.ke> wrote:
Gang,
The verdict on this is out! Turns out the SIM cards work just as they would at home! I've verified this physically.....down to the IP addresses assigned to them!
I had consulted 2 other friends in 'knowledge street' and got these verbatim responses that may be of interest to some members...
=============Knowledge Street1=============== *The APN is only known in your home network. * *The serving SGSN, visiting SGSN has to connect to your home APN DNS to resolve the APN so as to get which GGSN to create your session so as to obtain IP services. **Once the request is received by your home GGSN, the rest should just flow: IP address, billing, etc * ===========================================
=============Knowledge Street2=============== *When you roam you will be attached to the SGSN in the foreign country, but the routing shall be done on your home GGSN; meaning that you will have an IP from the range provided in the roaming country* *Before attaching to the foreign SGSN, the foreign network does a check with your home network - subscriber validation.* *Since the routing shall point to your home GGSN which basically routes your APN range of IP's accordingly, you should be routed as if you were at home... also depends on the "APN related priviledges"* ===========================================
Now we know. :-) :-)
Tony.
2017-02-21 17:54 GMT+03:00 Odhiambo Washington <odhiambo@gmail.com>:
Tony,
Without thinking so much about this and asking what it is you do with the IPs, I must say IP addresses are NOT portable outside a given network where they are assigned. You cannot say in Kenya, Zuku assigns you 1.2.3.4 routed for the purpose of some obscure services that you run in your Kenyan network and then expect to carry the router configured with Zuku IPs and still expect it to work in Safaricom network, for instance! Now extrapolate that to a foreign country.
On 21 February 2017 at 16:03, Tony Likhanga via skunkworks < skunkworks@lists.my.co.ke> wrote:
Good people.... small query here....that little GGSN & SGSN matter...
1. My mobile Phone Service provider issues me with a special APN SIM card (assigned a pre-defined range of IPs)
2. I roam on data into a different country...
Who assigns me the IP when in the foreign country? Is it still my provider? And will I still be assigned an IP address in the pre-defined range I'm used to at home?
Mwagiru, Kioko et al.... SOS!
Tony.
_______________________________________________ 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 +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft."
_______________________________________________ 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 +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft."
_______________________________________________ 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
participants (4)
-
Mwendwa Kivuva -
Odhiambo Washington -
Tony Likhanga -
Walubengo J