Adding a route to a Cisco 800 Switch

Are there any ACL's on it? Any ICMP filtering devices? Have you tried pinging it from the router you are trying to configure, to see if that can get to it - if it can't then the problem is not the router config.

Are you getting ICMP timed out or destination unreachable errors when pinging?

No there is no ACL's (I gather that is access control list) or any ICMP filtering devices. I have tried ping the other router before and after adding the route (which should have already been there) ICMP timed out on both occassion's.

Unfortunately as well I can't check the config on the other router as I do not know the password (as I never it set)

The device was working fine on Monday went down tuesday - No power cuts to my knowledge.

From your computer could you run a traceroute to the IP you are trying to reach and post the resutls here? You IP's are internal so there is no problem putting them here as they won't mean anything to anyone outside of your network.

You could also try a pathping which gives a little more info than a traceroute.

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\>tracert 192.168.254.254

Tracing route to 192.168.254.254 over a maximum of 30 hops

1 <1 ms <1 ms <1 ms 10.136.140.251
2 1 ms * * 10.136.140.250
3 * * * Request timed out.
4 * ^C
C:\Documents and Settings\

What is a pingpath I have never came across that word before - huh

Anyhow do I need to set the route on the dialer or by setting the route on the router, does that forward the IP Automatically thru the dialer?

Could you explain a little of yuor network? Ie where the dialler is in relation to the router etc.

From your traceroute I am presuming 10.136.140.250 and 251 are routers? Is 10.136.140.251 your default gateway? There could be a routing problem on 140.250 as it is not finding the 192.168.254.0 network. Do you have access to it?

A pathping is a broken down ping that gives info for each hop it passes. It's similar to traceroute but uses a slightly different protocol so sometimes can avoid any ICMP filtering. (pathping <IP Address> )

I am not sure what you mean by the dialer, is that the ISDN Line as the phycical device, the router .250 is according to the plans a Cisco 2600. I am not sure what .251 it is my default gateway. I do not have phyical access to .250 I think .251 is a Cisco 1800 I can see two of them. But I cannot see a Cisco 2600

It looks like you have this setup

Code:

---

You-->-->| 10.136.140.251 |-->-->| 10.136.140.250 |-->-->-->| Maybe Internet / firewall |                                                                           
                                        |
                                        |
                                        |
                              | 192.168.254.0/24 (NETWORK) |

---

It looks like you need the 10.136.140.250 router to route across to the 192.168.254.X network, so on this router you need to add the 'ip route 192.168.254.0 255.255.255.0 <IP of router/Gate way> <hop>

You client is configured with 251 as its gate way so it sends all non local traffic to this, then 251 has a route in it that tells it to send anything destined for 192.168.254.0/24 to the .250 router (or it could have a default route telling it to send any unknown traffic to .250).
The .250 router however either does not know where to send the traffic and is dropping it, has ACL's on it telling it to drop the packets, or whatever its default route is set to is dropping the packets (possibly a firewall)

I could have the topology wrong though and 140.250 could be a firewall - I am just going off what I presume it is from your traceroute and description.

If there was anyway you could do a sh run on the router, that would definitely help some....who controls the .250 router? Could you get them to send you a sh run from that router?

If we can see the routes on those 2 routers, it would make troubleshooting a little bit easier.


Definitely starting to sound like the .250 router might be missing a route to the 192.x.x.x network as nokia suggested.

I have found the route table on the router and the correct route to dialer is there - So since the second router cannot be pinged from router1 Then they must be a problem with router2 unfortunately I cannot logon to the second router (whoever set the password didn't log it)

Thanks for your help guide - But without the password for router2 I cannot go any further! :(

Pah, just unplug it! :D