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836
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4
Helpful
20
Replies

Not able to reach to Router

mahesh-gohil
Level 1
Level 1

In my network I can see ip route to particular destination but not able to ping

Pl. guide

Router#sh ip route vrf ABCD x.x.x.x

outing entry for x.x.x.0/24

Known via "bgp 9730", distance 200, metric 0, type internal

Last update from y.y.y.y 1w2d ago

Routing Descriptor Blocks:

* y.y.y.y (Default-IP-Routing-Table), from y.y.y.194, 1w2d ago

Route metric is 0, traffic share count is 1

AS Hops 0

Router#ping vrf ABCD ip x.x.x.x

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to x.x.x.x, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

Regards

Mahesh

20 Replies 20

network.king
Level 4
Level 4

Hi,

Pls check two things

1.In the remote PE , see wheter you are able to learn the route of the VRF ABCD connected interface of the router from where you ping . ( Check under your address family ipv4 vrf ABCD , wheter redistribute connected given )

2.If the destination is customer end , check wheter you are learning the route of the connected interface .

If both are fine , check wheter labels are exchanged properly at both sides

Hope this helps

regards

vanesh k

See

the router from which I ping is not directly connected with the device I ping..

My Router--ds3 link---->another router---E1 link (172.30.101.58/30)--> router I ping (It is Customer end)

And from My router I am doing ping to 172.30.101.58.

this is the scenario

if need more information kindly tell me

Kindly guide

Regards

Mahesh

Hi,

To make it clear ,

In " my router " , you will have a vrf ABCD enabled interface right , Pls check wheter that connected interface route is learned in "another router " , bcause a vrf ping would take , the connected ip of "my router " as source . Similary check for the routing in the CE also for the connected interface ip of " my router "

Hope this helps

regards

vanesh k

see,

from my router i can telnet to another router and from that router i am able to telnet to CE .. But from my router i am not able to reach to CE.

------------------------------------------

My router Config:

ip vrf ABCD

rd 9730:85

route-target export 9730:51

route-target export 9730:92

route-target import 9730:52

route-target import 9730:53

route-target import 9730:92

address-family ipv4 vrf ABCD

redistribute connected

redistribute static

no auto-summary

no synchronization

exit-address-family

---------------------------------------------

Another router config:

ip vrf ABCD

rd 9730:85

route-target export 9730:51

route-target export 9730:92

route-target import 9730:52

route-target import 9730:53

route-target import 9730:92

address-family ipv4 vrf ABCD

redistribute connected

redistribute static

no auto-summary

no synchronization

exit-address-family

and there is no any static route defined in any of two router.

Pl. guide

Mahesh

Dear Vanesh,

TEll me one thing if a vrf is configure in two router ..and both have identical configuration regarding to that VRF. what else is needed to reach to CE (which is connected to another router) from my router

I think i am missing something in config that's why not able to locate the problem

Hope this will useful to u to solve my problem

Mahesh

Mahesh,

are you sure you don't need:

ping vrf ABCD 'CE' source 'one of your ABCD i/f'

??

it should work if you specify source since this is vrf-specific ping.

chintu_punjabi
Level 1
Level 1

Hi Mahesh,

Can you confirm that in ur core mpls ip propagate-ttl is configured or not

Cheers 1

It is by default enabled and it is in our compan's policy to keep it as default

regards

Mahesh

Hi,

Pls check

1.Whether from "another router " you are able to ping the ip

2.If you are able to ping , check wheter the customer is having default route or some specific routes

3.If default route , then need to check in terms of labels , if static route then check wheter the connected route of "my router " is added at cpe end .

regards

vanesh k

--Ya from another router i am able to ping

-- customer is able to learn route to another router via OSPF

CE: Routing entry for 172.30.6.0/24

Known via "ospf 100", distance 110, metric 20, type extern 2, forward metric 150

Regards!!

Hi ,

What abt the route for /30 connected ip of "my router " vrf ABCD interface

regards

vanesh k

Dear vanesh,

Now it is clear I am attaching one file for diagram.

Look at that and problem is there

Pl. suggest me necessary config

Regards!!

Hi

Its simple , I think you are running OSPF between your PE and CE . Do a redistribution of the BGP routes in the ABCD VRF into OSPF

configured for the customer .

It would make the customer routers to learn the routes

Router1(config)# router ospf 2 vrf v1

Router1(config-if)# log-adjacency-changes

Router1(config-if)# redistribute bgp 1 subnets

Hope this helps

regards

vanesh k

isn't there any other way instead of configuring sham links?

where should i configure on CE or PE..B'se on PE I have no config related to OSPF.

Regards!!

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