Enquiry: For vrf leaked routes what should be the origin in BGP

[inderjeet452]

Hi All,

I stucked in some issue, let say we are having two vrf and done the route leaking between these two.

In one vrf when we check the bgp table it is showing origin(i) for all networks.

After done the leaking when we check the same in other vrf, the origin code changed to (?).

Is this fine or any issue with the leaking or RFC standard?

[Pedroxh]

Hi. Is fine. The origin code "?" n the BGP means when you have redistributed something into BGP.

[inderjeet452]

Hi,

My question is

Suppose I am using two vrf

VRF-A and VRF-B

When I check

show ip bgp vrf A

for those networks I announced in BGP via

NETWORK

command showing origin code as (i) and same for different vrf B as well.

Now I import/export both vrf and when checked the

show ip bgp vrf A

it showing vrf B network origin code as (?) While in same vrf is was originating via (i). How it can changed to (?).

[MHM Cisco World]

Any prefix that inject into bgp via

network have "" i""

Any other since router inject ot unknown it will have ""?"" Included prefix that redistrubte.

[inderjeet452]

Hi,

Thanks for the response.

Here I am taking about vrf routes which are imported/exported.

The network which shows as (i) in vrf A and when we import this vrf A to vrf B, whether the origin will change or with same origin code it will imported and shows in bgp vrf table.

[MHM Cisco World]

I un lab and test the modify of origin, 
there is no modify. 
the R2

advertise 22.22.22.22

origin IGP (using

network

command) the prefix show in VRF RED and BLUE and R3 as origin IGP. 
no modify. 

[inderjeet452 · Accepted solution]

Thanks MHM for the output.

So if we leak something in vrf it's origin will not be changed.

This behaviour is vendor specific or it is a standard that other vrf route showing origin as (i) will not change it's origin (i) after import/export.

And if this is the standard it should not change the origin please share link to go through the same.

Thanks in advance.

[inderjeet452]

Hi,

Can anyone refer any standard for the subjected discussion.