Serial frame-relay question

[rkirmeier]

I am setting up a Cisco 26xx with one Ethernet and one T1 CSU/DSU WAN module. I have included the interface config below but what I can not understand is that I cannot ping the IP of the interface even though the Line and protocol are UP. There may be some issues with the PVC and or ISP but shoud this really matter? I would think that as long as the interface is UP I should be able to ping the IP bound to it. Any info would helpful..

interface Serial0/0
ip address 141.155.127.94 255.255.255.252
no ip directed-broadcast
encapsulation frame-relay IETF
no ip mroute-cache
no fair-queue
service-module t1 timeslots 1-6
frame-relay interface-dlci 106
frame-relay lmi-type ANSI

Note: Serial0/0 Line is UP and Protocol is UP.

 

[AidanEnos]

What routing protocol are you running?
How long are you waiting to try and ping?
Where are you trying to ping from?

Build the test for us:

Pinging from Dallas with this configuration:

to San Francisco with this configuration:

Dallas router shows:

sho ip route

San Francisco router shows:

sho ip route

Basically I want to make sure you are getting your routing updates, you have both WAN links on the same ip network, etc.

 

[rkirmeier]

Protocol: TCP/IP
Tried ping a hundred times..
Pinging Serial0/0 while logged in on the router through Eth0/0 interface.

Thanks,
Robin

 

[UNIX72]

Are you running NAT? TCP/IP is not a routing protocol but ip is a routed protocol. Are you using rip, igrp, etc?

 

[AidanEnos]

what he said ;o)

Basically you nave 4 choices to route from your ethernet interface to your serial interface...

You can enable igrp (eigrp)
You can enable RIP
You can enable OSPF
You can enter a static route between the 2 ip networks.

i.e.

141.155.127.94 is the serial interface ip address, the network is 141.155.127.92 becuase of your subnet mask of 255.255.255.252. So your serial interface has a maximum possibility of 2 hosts (the other end of the serial connection HAS to be 141.155.127.93, .95 is the broadcast address)

so...

if you:

set ip route ethernet.address.network 141.155.127.92

you have a static route.

this will make your ping work, make SURE you use the ethernet IP NETWORK, not just the interface ip address.

AidanEnos