As per https://tools.ietf.org/html/rfc8402#section-3.1

“The context for an IGP-Prefix
   segment includes the prefix, topology, and algorithm.  “

Clearly two different VRFs are different topologies. Therefore destinations in 
one VRF will have different SIDs from destinations in another VRF i.e., clearly 
the same prefix does not represent the same destination in this case.

   Les

From: tech_kals Kals <[email protected]>
Sent: Monday, March 11, 2019 10:35 PM
To: Clarence Filsfils (cfilsfil) <[email protected]>; 
[email protected]; [email protected]; ask-segment-routing(mailer 
list) <[email protected]>; Stefano Previdi (sprevidi) 
<[email protected]>; Ahmed Bashandy (bashandy) <[email protected]>; Les 
Ginsberg (ginsberg) <[email protected]>; Peter Psenak (ppsenak) 
<[email protected]>; [email protected]
Subject: Which SID is used to represent links when both of them have same IP 
address.


Hi experts,



Would like to know which SID can be used for the interfaces which are having 
same IP address and have different VRFs.



Assume there are two interfaces on the same router.

Both are having same IP address and they are differentiated using VRF.

So, the config looks as shown below.



eth1 ----> VRF1: 20.1.1.1/24<http://20.1.1.1/24>

eth2 ----> VRF2: 20.1.1.1/24<http://20.1.1.1/24>



Which SID can be used to represent these links ? Can we use AdjSID ?



Thanks,

Kaliyaperumal K
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