08-05-2009 02:03 AM - edited 03-04-2019 05:39 AM
Hi,
I have a network with 3 branches
Branch A - Main Center HQ
Branch B - Main Branch Office
Branch C - Small Branch Office
Branch A connects to Branch B on Router-1
Branch C connects to Branch B on Router-2
both router in Branch B are connected to a Switch on the LAN Side 192.168.10.x network.
192.168.10.2 on Router-1 LAN Int Fa0/0
192.168.10.5 on Router-2 Lan Int Fa 0/0
Branch A and Branch B are connected over OSPF on Router-1. Branch C and Branch B are connected using static route over Router-2.
From Branch A- am able to reach Branch B and Branch C.
From Branch B- am able to reach Branch A and Branch C.
From Branch C- I am not able to see Branch A.
If ping from Branch C Router to Branch B WAN interface (Fa0/1) i am able to ping. I am able to ping the LAN interface (Fa0/0) ie- 192.168.10.5 also, but i am not able to ping the same range IP 192.168.10.2 configured on the Router-1 Lan interface Fa0/0.
Branch C router has a default route pointing to the Branch B Router2 WAN Interface (Fa0/1).
what could be the problem? how can i make this work? a route-map can work or not?
Apreciate your valuable input.
regards
Jacob
08-05-2009 02:26 AM
Jacob
The obvious thing to check is Router-1 routing table to see if it knows how to get to Branch C.
When you ping from Branch C what is the source IP address and does Router 1 know how to get to this.
Remember you can specify the source address on Branch C router when you ping ie.
ping 192.168.10.2 source
Jon
08-05-2009 02:44 AM
Hi Jon,
On Router-1 there is a static route for Branch C Local network (192.168.20.x) pointing to the Lan interface (fa0/0)
192.168.10.5 of Router2.
ip rouet 192.168.20.0 255.255.255.0 192.168.10.5
In this case if i Ping from 192.168.20.x or the sourece as 192.168.20.x it should be pinging up to 192.168.10.2 right?
From Branch C router it was not an extended Ping we did, i will check this and update Jon.
But again, if i have to reach the LAN of Branch A, i have to specify a router-map on the Branch B Router2..! am i right?
Thanks and Regards
Jacob
08-05-2009 03:09 AM
Jacob
"From Branch C router it was not an extended Ping we did, i will check this and update Jon."
The Branch C router will use it's WAN interface as the src address by default. Check that router 1 has a route back to this address.
You do not need to use route-maps, this is a simple routing issue unless there is something else you have not explained fully.
Jon
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