From: Cisco Employee <[email protected]<mailto:[email protected]>> Date: Thursday, March 12, 2015 at 9:49 AM To: Nitin Singh <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Cc: Hassan Hosseini <[email protected]<mailto:[email protected]>>, Ryan Bickhart <[email protected]<mailto:[email protected]>>, Manoj Sharma <[email protected]<mailto:[email protected]>>, John E Drake <[email protected]<mailto:[email protected]>>, Cisco Employee <[email protected]<mailto:[email protected]>> 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 protected]<mailto:[email protected]>> Date: Wednesday, March 11, 2015 at 5:38 PM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Cc: Hassan Hosseini <[email protected]<mailto:[email protected]>>, Ryan Bickhart <[email protected]<mailto:[email protected]>>, Manoj Sharma <[email protected]<mailto:[email protected]>>, John E Drake <[email protected]<mailto:[email protected]>> Subject: RE: draft-sajassi-bess-evpn-etree Resent-From: <[email protected]<mailto:[email protected]>> Resent-To: <[email protected]<mailto:[email protected]>> 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
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