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[Kaliraj Vairavakkalai <>]

> rare/freertr used the neighbor 1.1.1.1 address-family knob whta controls, but the safis are similarly exclusive, only one of them is accepted:

Yea, we noticed that during last hackathon. that’s ok, we can work with that.

 

But my main question was this:

 

Lets say there are two RSVP-TE-Tunnels (red, blue) between r1 to r2.

 

>  red         red---r5
> r0-->r1====r2<--r4
> blue         blue

> so in the above topology we can separate the two colors while using a single link in between r1 and r2 with 1 bgp-ct session...

Can red bgp-ct routes put traffic on red-Tunnel. And blue-routes put traffic on blue-Tunnel?

i.e. based on the mapping-community on the bgp-route, resolve bgp nexthop r2 over a red/blue-Tunnel.

 

I thought that is the ‘Colorful resolution’ functionality that arrived in spring. Sorry if I misunderstood. :)

 

Thanks

Kaliraj

From: mc36 <>
Date: Tuesday, February 14, 2023 at 10:11 PM
To: Kaliraj Vairavakkalai <>, Krzysztof Szarkowicz <>, Simon Leinen <>, Ivana Golub <>, Frédéric LOUI <>
Cc: Natrajan Venkataraman <>, Reshma Das <>, <>
Subject: Re: [freertr] [RARE-users] EANTC - BGP CT - Juniper-FreeRTR

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> (xr lifted this recently, whereas it's still true for xe and rare/freerouter)
>


c8000v-1(config)#router bgp 1
c8000v-1(config-router)#address-family ipv4 unicast
c8000v-1(config-router-af)#neighbor 1.1.1.1 send-label ?
   explicit-null  Advertise Explicit Null label in place of Implicit Null
   <cr>           <cr>

c80000v-1(config-router-af)#neighbor 1.1.1.1 send-label

so this knob is what "converts" this peering from ipv4 unicast to ipv4 labeled unicast, and obviously it's set or not... :)

rare/freertr used the neighbor 1.1.1.1 address-family knob whta controls, but the safis are similarly exclusive, only one of them is accepted:

sid#configure
sid(cfg)#router bgp4 123 vrf v3
sid(cfg-rtr)#neighbor 1.1.1.1 remote-as 321
sid(cfg-rtr)#neighbor 1.1.1.1 address-family unicast labeled
sid(cfg-rtr)#show running-config this
router bgp4 123 vrf v3
  neighbor 1.1.1.1 remote-as 321
  neighbor 1.1.1.1 address-family labeled
  exit
!

sid(cfg-rtr)#

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