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Posted by Ananda Ramesh on April 8, 2006, 9:01 am
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Please be patient to read this problem
The architecture is that i am using a Nortel Passport 2430 Router for a
256 Kbps leased line for internet connectivity and further i have a
contivity 600. The DOT side Cisco AS 7200 Router is used. Further from
cisco E1 line is terminated to a E1 modem and converted into a HDSL
line and in turn is connected to a V.35 modem and finally terminated to
our serial interface. In the Cisco router 4 time slots are dedicated to
us for 256 Kbps line speed.
Initially I have configured the Serial Interface of Passport 2430
Router with the IP 210.212.255.82/30 which we have bought from the
service provider. And I have changed the Clock Source to 256000,
because it is a 256 Kbps leased line. At that time the serial is not up
and I have not received any response from the Cisco router. Then I
suspected that there may be a problem with the framing in the modem.
Then I called up the Cygnus modem technical support guy and with his
help I configured framing as PCM31 with No CRC. I have configured the
Time Slots too in the modem.
Then the Serial is up and the LCP too. But IPCP is down. The "show ip
interface" shows that the serial interface is down. Then the DOT
person told me that his router is doing AAA Authentication with Radius
Server. So we agreed to configure PAP Authentication and we did.
After that the authentication phase is completed and IPCP is up. The
"show ip interface" shows that the serial interface is up, but I
cannot ping the remote interface which contains a static IP
210.212.255.81/30.
If anyone is intrested in solving this issue then i can send the
configuration and log file.
Please help me to solve this issue.
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