OSPF Problem

[talk2ram]

Hi all

iam using test setup metro Ethernet Ring

using my cisco routers for testing for proof testing

my setup looks like below

Rt1---rt2----rt3---rt4--Rt1

above sai routers all connected to Ring

using their Etherent devices using cross cable

and each Router i have connected One PC

to one of the Ethernet

iam using OSPF to take routing decission shortest path for the other PC communication

i have problem here is

i can reach adjacent routers PC

but iam not able to reach other side of the PC

example

rt1 (PC) can reach rt1 PC and RT3 PC

but not able to reach RT4 PC

all loopbacks in one range

192.168.200.0 area 1

local networks configured area 0

can you some tell me why iam not able to reach other side of the routers..

thanks

ram

[talk2ram]

Hi

iam using that link only to configure

then only iam posting here for the help

i could not able to get the updates..

so iam refering here to correct my config

and get the results success

ram

[spremkumar]

Hi ram

As pointed out in my earlier mail and also pointed out by other poster do configure the loopback interface in /32.

the main point in doing this is the router will take this as the router id while establshing the neighborship with other routers.

and again its the best/general practice to go with a loopback interface esp if ur running any routing protocol so that u dont face any undesired result like duplicate router id etc.,.

configure your ethernet interface as /30 since you are going in a point to point kinda connectivity.

also key in the network type as point to point so that it shuldnt get onto DR/BDR election which it does by default on a ethernet interface.

this is required on the ethernet interfaces which inturn connects to other router ethernet interface.

in ur local lan since ur going for a single pc connectivity u can configure a /30 ip under that ethernet interface and no need for point to point there in those interfaces which connects to ur PC.

if u r having a large network behind that ethernet u can configure up a /24 subnet over there..

now comes ur ospf config place all the ip subnets which are there in the router.

i would suggest to have the interconnect interface ips in area 0 and also the loopback ip in area 0

configure your local lan in area1 or may be you can try it in area 0 itself..

using this setup u can try out for stub are configs,TSSA configs also u can try out for virtual link..

regds

[talk2ram]

Hi

thanks for the quick reply

can you clarify that.. you want me to establish a

Virtual link config, when the router is not connected directly ??

is that correct ??

ram

[spremkumar]

Hi ram

i was just mentioning the different scenarios which you can try up there with ur boxes that it..

like if u got a router which is not directly connected to area 0 like u can place that in different area altogether and try the virtual link configss..

regds