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Webcast-Catalyst9k
New Member

Big routing problem

Hello people,

I have this problem and need your help ASAP.Please see the attached files.

1. on routerA, its s1/0:0 (10.3.15.222/24) is connected to routerB s1/0:2 (10.3.15.221/24)

2. the routerB fa0/1( 10.3.12.51/24) is connected to routerC gig1/0/17 (10.3.12.7)

3. I have a route on the routerB created (ip route 10.1.10.0 255.255.255.0 10.3.12.7) and a host (10.1.10.101/24) is reachable from routerB. However, routerA when I create a route : ip route 10.1.10.0 255.255.255.0 10.3.15.221, I am not able to reach the 10.1.10.0 network

When I ping from the routerA to either 10.3.12.7 or 10.1.10.101, I get time-out

To make room for file attachements, routerB and routerC configs are on the file called routerB

Can anyone please have a look at my configs and diagram and advice ?

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: Big routing problem

RouterC doesn't seem to have a route back to 10.3.15.222, which is used by routerA as a source address when you ping toward routerC, hence routerC not being to reply to ICMP request messages.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
4 REPLIES
bjw Silver
Silver

Re: Big routing problem

There could be a few issues, can you send output of the - SHOW IP ROUTE - on Router A?

Cisco Employee

Re: Big routing problem

RouterC doesn't seem to have a route back to 10.3.15.222, which is used by routerA as a source address when you ping toward routerC, hence routerC not being to reply to ICMP request messages.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: Big routing problem

yes it has. You are no CCIE for nothing.

Re: Big routing problem

Hi

Do u have route back to router A from router B,if not add a route on routerB.On routerA add a default route pointing to routerB and check.

Thanks

Mahmood

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