1721 + WIC-1ENET

Unanswered Question
May 24th, 2007
User Badges:


I have a Cisco 1721 router, with a WIC-1ENET (single port ethernet) WIC in 0.

Ethernet0 - /

Fastethernet0 - /

I am trying to route the Fastethernet0 to Ethernet0 (the WIC).

as... / - (on Ethernet0)

I can ping both networks and computers from the 1721, however I cannot ping through the router from one network address to the other.

I am assuming that this is either a routing issue, or NAT.

The nat is / - Ethernet0.

Can any one explain why this isnt working?

I can post the config if desired,


- Brody

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)

Hi Brody,

I think is the deafult gw of the host on so if these hosts want to reach the network then should be configured to route back the to If you can post the whole config the NAT config can be checked as well.

Hope if helps, rate if does.


brodymulry Fri, 05/25/2007 - 17:13
User Badges:

Krisztian, sure!

(only edit is the beginning and end brackets, and i removed the MD5 sum (XXXX)

I hope this helps, as I have a 1800 configured almost identically and it works.. (confused?)

Please have a look, maybe i'm missing something..

I look forward to your reply,


- Brody

brodymulry Fri, 05/25/2007 - 18:52
User Badges:

here is the -re'attached config..

(for edit: had to remove the other admin md5 sum)

brodymulry Fri, 05/25/2007 - 23:50
User Badges:

fixed the problem myself.. t'was logically ilogical..


' no ip route '

be put via the SDM into the config?

I guess old school config's are the way to go..


This Discussion