Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Different vrf interface in same router can communicate ?

Posted on 2016-07-29
6
Medium Priority
?
68 Views
Last Modified: 2016-07-29
Hi, Here is a question. Anyone can help to answer?

Here is topology R1 ------ (e1/1)R2(e1/2) ----- (e1/3)R3

R3 advertise bgp routes to R2. The interface e1/2 in R2 is vrf ABC, while e1/1 in R2 is vrf xyz. Do you think if it is possible for R2 to advertise the bgp routes to R1 through R2' e1/1?  Thank you
0
Comment
Question by:eemoon
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 14

Accepted Solution

by:
SIM50 earned 2000 total points
ID: 41734755
If I understood you correctly, than yes. It's called route leaking.  

ip vrf ABC
 rd 10:1
 route-target export 10:1
 route-target import 10:1
 route-target import 20:1
!
ip vrf XYZ
 rd 20:1
 route-target export 20:1
 route-target import 20:1
 route-target import 10:1
0
 

Author Comment

by:eemoon
ID: 41734802
Thank you so much for your fast reply. I think you are right.

We think vrf as independent router or routing table in a physical router. The purpose of vrf is to run different routing table in one physical router. so only same vrf interface can communicate in one router. This is general situation.

Now we hope different vrf in one router can communicate. So route leaking could do that.  Can you send a link for this?  Thank you
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:eemoon
ID: 41734868
Thank you so much for your link.

BTW, I am new to vrf, can you confirm my below comment is correct? Thank you again

We think vrf as independent router or routing table in a physical router. The purpose of vrf is to run different routing table in one physical router. so only same vrf interface can communicate in one router. vrf is only local router concept. This is general situation.
0
 
LVL 14

Expert Comment

by:SIM50
ID: 41734889
You are partially right. It is a separate instance of a routing table. Think of it as a layer 3 vlan. Unless you will give it means to talk to other vlans, it will remain isolated. VRF is not a local router concept, it can  expand through the whole network, just like a vlan.
0
 

Author Comment

by:eemoon
ID: 41734895
Excellent explanation! Thank you
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It happens many times that access list (ACL) have to be applied to outgoing router interface in order to limit some traffic.This article is about how to test ACL from the router which is not very intuitive for everyone. Below scenario shows simple s…
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question