Subject: [bess] FW: draft-sajassi-bess-evpn-etree

From: "Ali Sajassi (sajassi)" <[email-masked]>
Date: Wed, 25 Mar 2015 16:01:40 +0000

From: Cisco Employee <[email-masked]<mailto:[email-masked]>>
Date: Thursday, March 12, 2015 at 9:49 AM
To: Nitin Singh <[email-masked]<mailto:[email-masked]>>, "[email-masked]<mailto:[email-masked]>" <[email-masked]<mailto:[email-masked]>>
Cc: Hassan Hosseini <[email-masked]<mailto:[email-masked]>>, Ryan Bickhart <[email-masked]<mailto:[email-masked]>>, Manoj Sharma <[email-masked]<mailto:[email-masked]>>, John E Drake <[email-masked]<mailto:[email-masked]>>, Cisco Employee <[email-masked]<mailto:[email-masked]>>
Subject: Re: draft-sajassi-bess-evpn-etree

Hi Nitin,

This  “ESI label” is advertised using “ESI label extended community” along with the Eth-AD per ES route as always.

The purpose of this label is to have a root/leaf indication in the data-plane for traffic being sourced from single-home sites as discussed in that paragraph.

Cheers,
Ali

From: Nitin Singh <[email-masked]<mailto:[email-masked]>>
Date: Wednesday, March 11, 2015 at 5:38 PM
To: "[email-masked]<mailto:[email-masked]>" <[email-masked]<mailto:[email-masked]>>
Cc: Hassan Hosseini <[email-masked]<mailto:[email-masked]>>, Ryan Bickhart <[email-masked]<mailto:[email-masked]>>, Manoj Sharma <[email-masked]<mailto:[email-masked]>>, John E Drake <[email-masked]<mailto:[email-masked]>>
Subject: RE: draft-sajassi-bess-evpn-etree
Resent-From: <[email-masked]<mailto:[email-masked]>>
Resent-To: <[email-masked]<mailto:[email-masked]>>
Resent-Date: Wednesday, March 11, 2015 at 8:11 PM

Hi ,

This is regarding the following text from the section 3.2 of the draft .

“Furthermore, a PE advertises two special ESI MPLS labels: one for
Root and another for Leaf. These are used by remote PEs for traffic
originating from single-homed segments and for multi-homed segments
that are not connected to the advertising PE. Note that these special
labels are advertised on a per PE basis (i.e. each PE advertises only
two such special labels).”

Can you please provide an explanation about the special ESI MPLS labels .  Which route type in EVPN will be used  to carry these labels ?

Thanks
Nitin