connecting to remote LAN that's 2 hops away

Answered Question
Oct 22nd, 2007

my company is connected a remote office that will be 2 hops away from the corp. office router. we already have a connection to the 1st hop via serial ports. but the last hop will be via wireless radios which isn't a big deal. my dilemma is WHERE to insert any config lines so that a PC at the main office can ping the remote office.

I have attached a visio diagram for reference.



Correct Answer by Richard Burts about 9 years 4 months ago

Gary


Yes that would be what I was looking to see. It should work fine.


HTH


Rick

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Richard Burts Mon, 10/22/2007 - 08:42

Gary


Assuming that KWCHRTR is your corp router, that KBSLRTR is the remote router, and that KBSHRTR is the first hop router, then you should be sure that KWCHRTR has a route for the user subnet at the remote (10.30.51.0/24) which has the first hop router as the next hop. You also need to be sure that the first hop router has a route for this subnet pointing to KBSLRTR as the next hop. If I interpret the drawing and your description correctly I believe that KBSLRTR can use just a default route pointing to the first hop route as its next hop. The next hop router will need to have a route for the subnet(s) of KWCHRTR (or perhaps its default route) which point to KWCHRTR as the next hop.


HTH


Rick

garyrivers Mon, 10/22/2007 - 10:20

Rick, thanks for your help.

so the config lines should look like this:

KWCHRTR:

ip route 10.30.51.0/24 192.168.200.22

KBSHRTR:

ip route 10.30.51.0/24 10.30.12.10

KBSLRTR:

ip route 0.0.0.0 0.0.0.0 10.30.12.2


Right?

Richard Burts Mon, 10/22/2007 - 10:47

Gary


What you have looks good. It does not address the question of KBSHRTR routes to KWCHRTR. I can not tell from the diagram whether a default route on KBSHRTR would be appropriate (pointing to KWCHRTR) or whether it needs static routes for subnets on KWCHRTR.


HTH


Rick

garyrivers Mon, 10/22/2007 - 10:52

the link between kwch and kbsh is active. if that's what you're asking. so we're really just going from kbsh to kbsl.

Richard Burts Mon, 10/22/2007 - 11:04

Gary


That is not what I am asking. What I am asking is what is there in the routing table that will point to kwch? Are there routes for the user subnet(s) or is there a default route that points to kwch as the next hop?


HTH


Rick

garyrivers Mon, 10/22/2007 - 11:38

oh, duh! sorry.

in the kbsh router we have a route that points to the kwch router.

ip route 0.0.0.0 0.0.0.0 192.168.200.21


Correct Answer
Richard Burts Mon, 10/22/2007 - 12:11

Gary


Yes that would be what I was looking to see. It should work fine.


HTH


Rick

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