VRF setup problem

[elizabethf]

Hello, I'm having quite some trouble setting up my VRFs and I was wondering if anyone here could tell me what I'm doing wrong.  The network topology is as shown on the picture. I have to setup two VRFs using BGP - one for CE_Prague and CE_Warsaw, and another VRF for CE_Barcelona and CE_Florence. I already did that - I made a vrf named ELI for the first two, and a vrf named KATI for the second two. The problem is the two CE routers that belong to the same VRF cannot see each other, therefore, cannot ping each other which is the main task. I'm really stuck and I don't know what I'm supposed to do so I'd be very glad if any of you can help me.

[MHM Cisco World]

I see every this is OK, except that all prefix learn and Connect is same parent subnet

87.85.83.0

so

can in CE do the following 

ping 87.85.83.x source 87.85.83.4 

[elizabethf]

% Invalid source address- IP address not on any of our up interfaces

[MHM Cisco World]

use the IP that you use in interface connect CE to PE as source of ping 

[MHM Cisco World]

if above not work, 
then wr in all router 
turn down all router 
then turn UP all router 
and check again 
some times the MPLS with GSN3 have some issue

[Harold Ritter]

Hi @elizabethf ,

It looks like all is working now and that CE Warsaw can ping CE Prague and vice versa.

The

sh ip bgp sum

only shows a summary of the BGP sessions from CE Warsaw to PE Berlin and PE Rome, so yes it is correct. If you want to see all the routes received from PE Berlin and PE Rome, you need to do a

show ip bgp or show bgp ipv4 uni

Regards,

[elizabethf]

Oh, makes sense. Thank youuu! I wanted to ask, why doesnt 200.200.200.1 show up on the 

show bgp vpnv4 uni all

command that I showed you below?

[Harold Ritter]

You are very welcome @elizabethf .

If I understand you question correctly, you want to know why 200.200.200.1 shows up as a peer in the

show bgp vpnv4 uni all summary

but does not show up as one of the prefixes learnt under

show bgp vpnv4 uni all

This is because 200.200.200.1 is a global prefix rather than a VRF prefix.

show bgp vpnv4 uni all

only shows the VRF prefixes (vpnv4 address family). Does that answer you question?

Regards,

[elizabethf]

Yes, thank you so much, you spent a lot of time helping me fix the issue and it's finally fixed. Have a great day!

[Harold Ritter]

You are very welcome @elizabethf and thanks for the feedback.

[Harold Ritter]

Hi @elizabethf ,

Can you please provide the output from

show bgp vpnv4 uni all sum and show bgp vpnv4 uni all

from the route reflector?

Regards,

[elizabethf]

Here you go:

Neighbor        V          AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

200.200.200.1   4       1234      53      68       18    0    0 00:41:42        1

200.200.200.2   4       1234      57      65       18    0    0 00:41:21        2

200.200.200.3   4       1234      58      65       18    0    0 00:41:18        2

200.200.200.4   4       1234      60      66       18    0    0 00:41:28        2




Route Distinguisher: 1:1

*>i87.85.83.0/30    200.200.200.1            0    100      0 ?

*>i87.85.83.4/30    200.200.200.2            0    100      0 ?

*>i87.85.83.16/30   200.200.200.3            0    100      0 ?

*>i87.85.83.20/30   200.200.200.4            0    100      0 ?

Route Distinguisher: 11:1

*>i87.85.83.12/30   200.200.200.2            0    100      0 ?

*>i87.85.83.24/30   200.200.200.3            0    100      0 ?

*>i87.85.83.28/30   200.200.200.4            0    100      0 i