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Need help with routing

I have two networks with an older IAD2431 I am using for testing. 

Here is my setup: 

Eth 0/0 - 192.168.134.10 255.255.255.0

Eth 0/1 - 172.16.1.254 255.255.0.0

From the 192.168 network (my pc was at 192.168.134.101) I can ping any IP address that is in the 172.16.1.X range but cannot ping anything other than the .1.X range.  It is acting like it is supposed to be a class C network.  For example if I try to ping 172.16.2.1 it fails.

I can ping any 172.16 address from the router but not from the 192.168 network.  If I do a tracert it stops at 192.168.134.10.

This has also happened to me on a HP router that I had a while back.  I'm sure it is something that I am doing but I don't know where to start.

4 REPLIES

Re: Need help with routing

Think you're going to need to post some configs.

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New Member

Need help with routing

It is pretty basic, I am only using the two ethernet ports right now.  Here is the config.

Router#show run

Building configuration...

Current configuration : 1188 bytes

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Router

!

boot-start-marker

boot-end-marker

!

!card type command needed for slot 1

!

no aaa new-model

network-clock-participate wic 0

!

!

!

!

!

!

ip auth-proxy max-nodata-conns 3

ip admission max-nodata-conns 3

!

multilink bundle-name authenticated

!

voice-card 0

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

archive

log config

  hidekeys

!

!

controller T1 0/0

framing esf

linecode b8zs

!

controller T1 0/1

framing esf

linecode b8zs

!

!

!

!

!

interface FastEthernet0/0

ip address 192.168.134.10 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet0/1

ip address 172.31.0.1 255.0.0.0

duplex auto

speed auto

!

no ip http server

no ip http secure-server

!

ip forward-protocol nd

!

!

!

!

!

!

control-plane

!

!

!

voice-port 2/0

!

voice-port 2/1

!

voice-port 2/2

!

voice-port 2/3

!

voice-port 2/4

!

voice-port 2/5

!

voice-port 2/6

!

voice-port 2/7

!

voice-port 2/8

!

voice-port 2/9

!

voice-port 2/10

!

voice-port 2/11

!

voice-port 2/12

!

voice-port 2/13

!

voice-port 2/14

!

voice-port 2/15

!

!

!

!

!

!

!

line con 0

line aux 0

line vty 0 4

login

!

end

Re: Need help with routing

you have a class a address space on the 172 side. What is the gateway address on the hosts on that subnet?

Sent from Cisco Technical Support iPad App

Re: Need help with routing

You also need ip classless in your config.

Sent from Cisco Technical Support iPad App

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