E1 Routing problem...

[jgaude]

Hello,

I've got two 7206 routers with E1 cards and I'm trying to setup routing between them locally. I've got the two routers connected with a cross-connect cable between Serial5/0 on each router. My config for each side is the same,

interface Serial5/0:0

description ppp channel 5

ip address 192.168.34.1 255.255.255.0

no ip directed-broadcast

encapsulation frame-relay IETF

ip mroute-cache

no fair-queue

frame-relay interface-dlci 16

frame-relay lmi-type ansi

frame-relay intf-type dce

And I've got a default router of 0.0.0.0 0.0.0.0 192.168.32.0

My problem is I've got PC's off each routers Ethernet port and I can't get a ping to reach the far side of the router. I can ping the local router's E1 interface but no further. From each routers console I can ping the other routers E1 interfacae but not it's own.

Does anyone have any advice for me? I'm losing the battle here!

Thanks,

...Joe

[jgaude]

Oh, and I should note, both interfaces are not set to the same IP addr. One is 192.168.32.1 and the other is 192.168.34.1....

...Joe

[spyoung]

Joe,

Can you post a copy of the output from the two commands "show run" and then a "show ip route" from each router?

Thanks,

sp

[jgaude]

Hi,

And thanks for taking a look at this. Here are the sh run and ip routes:

sh run

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname c2c_rtr_east

!

enable secret xxxx

enable password xxxx

!

!

!

!

!

ip subnet-zero

no ip domain-lookup

!

ip audit notify log

ip audit po max-events 100

!

--More-- !

frame-relay switching

!

!

!

!

controller E1 5/0

channel-group 0 timeslots 1-31

!

controller E1 5/1

channel-group 0 timeslots 1-31

!

!

process-max-time 200

gateway

!

!

Ethernet1/0

ip address 192.168.33.1 255.255.255.0

no ip directed-broadcast

no cdp enable

!

interface Ethernet1/1

ip address 156.x.x.x.255.255.0

no ip directed-broadcast

no cdp enable

!

!

interface Serial5/0:0

description ppp channel 5

ip address 192.168.34.1 255.255.255.0

no ip directed-broadcast

encapsulation frame-relay IETF

ip mroute-cache

no fair-queue

frame-relay interface-dlci 16

frame-relay lmi-type ansi

frame-relay intf-type dce

!

interface Serial5/1:0

ip address 192.168.32.3 255.255.255.0

no ip directed-broadcast

encapsulation frame-relay

fair-queue 64 16 0

!

ip classless

ip route 0.0.0.0 0.0.0.0 192.168.34.0

no ip http server

--More-- !

no cdp run

!

c2c_rtr_east#sh ip route

Gateway of last resort is 192.168.34.0 to network 0.0.0.0

156.23.0.0/24 is subnetted, 1 subnets

C 156.23.150.0 is directly connected, Ethernet1/1

C 192.168.34.0/24 is directly connected, Serial5/0:0

S* 0.0.0.0/0 [1/0] via 192.168.34.0

c2c_rtr_west#sh config

Using 2121 out of 129016 bytes

!

version 12.0

service config

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname c2c_rtr_west

!

enable secret xxxx

enable password xxxxx

!

syscon address 156.x.x.100 password

syscon shelf-id 0

!

!

!

!

ip subnet-zero

no ip domain-lookup

!

no ip bootp server

--More-- ip audit notify log

ip audit po max-events 100

!

!

frame-relay switching

!

!

!

!

controller E1 5/0

channel-group 0 timeslots 1-31

!

controller E1 5/1

!

!

process-max-time 200

gateway

!

!

!

interface Ethernet2/0

ip address 156.x.x.x.255.255.0

no ip directed-broadcast

no ip mroute-cache

no cdp enable

bridge-group 1

!

interface Ethernet2/1

ip address 156.x.x.x.255.255.0

no ip directed-broadcast

no ip mroute-cache

no cdp enable

--More-- !

!

interface Serial5/0:0

description ppp channel 5

ip address 192.168.32.2 255.255.255.0

no ip directed-broadcast

encapsulation frame-relay IETF

ip mroute-cache

fair-queue 64 16 0

cdp enable

frame-relay interface-dlci 16

frame-relay lmi-type ansi

!

ip classless

--More-- ip route 0.0.0.0 0.0.0.0 192.168.32.0

no ip http server

!

dialer-list 1 protocol ip permit

dialer-list 1 protocol ipx permit

bridge 1 protocol dec

!

line con 0

exec-timeout 0 0

transport input none

line aux 0

line vty 0 4

password xxx

login

!

!

end

c2c_rtr_west#sh ip route

Gateway of last resort is 192.168.32.0 to network 0.0.0.0

156.23.0.0/24 is subnetted, 2 subnets

C 156.23.152.0 is directly connected, Ethernet2/1

C 156.23.151.0 is directly connected, Ethernet2/0

C 192.168.32.0/24 is directly connected, Serial5/0:0

S* 0.0.0.0/0 [1/0] via 192.168.32.0

[spyoung]

If I understood you correctly earlier, you stated that the routers coul dping each other via their serial interface - Is that the case?

[jgaude]

Yes, that is correct. From the routers console, I can ping the other routers E1 interface but no further. From a PC, I can ping the Eth0 interface, then the E1 interface, then no further. So the routing is stopping at the E1 interface on each router.....

[olorunloba · Accepted solution]

Your ip addressing is not proper. From your config, I think that the E1 controllers on port 5/0 are connected together. They should be on the same ip address subnet, but they seem not to be. Also, for your routing config, use a destination address like 192.168.32.0 rather than a network like 192.168.32.0.

[jgaude]

You are correct!!! That fixed the problem. I addr'd the 34.1 interface to 32.1 and did static routes to the far side Ethernet ports and all is well!

Thanks so much!!!

...Joe

[spyoung · Accepted solution]

Im suprised your serial interfaces can ping each other as they are in different IP subnets. Unless that is, there is another route for these interfaces to reach each other via another connection.

Regardless, the serial interface config needs correcting. Both serial interfaces on the active FR link should to be in the same subnet.

[jgaude]

You are correct!!! That fixed the problem. I addr'd the 34.1 interface to 32.1 and did static routes to the far side Ethernet ports and all is well!

I'm not sure why I could ping each interface. Maybe because I did a 0.0.0.0 0.0.0.0 192.168.32.0 route on each box?

Thanks so much!!!

...Joe