Hi Jorge, Thanks for your response. Please see inline..
On Tue, Apr 30, 2019 at 8:43 PM Rabadan, Jorge (Nokia - US/Mountain View) < [email protected]> wrote: > Muthu, > > > > The source NVE identifies the MAC-VRF/BD out of the RT/eth-tag. The > assumption is that the BD is only attached to one IP-VRF, hence you know > what ARP table to look up. > If this is the case, why include the RT for the IP-VRF at all in route type-2 advertisements? Regards, Muthu > > > My two cents. > > > > Jorge > > > > *From: *BESS <[email protected]> on behalf of Muthu Arul Mozhi > Perumal <[email protected]> > *Date: *Tuesday, April 30, 2019 at 4:39 AM > *To: *"[email protected]" <[email protected]> > *Subject: *[bess] Question on ARP probe in > draft-ietf-bess-evpn-inter-subnet-forwarding > > > > Hi Everyone, > > > > draft-ietf-bess-evpn-inter-subnet-forwarding describes the mobility > procedure to be followed when a TS moves from a source NVE to a target NVE > and starts sending data traffic without first initiating an ARP request. It > says the following in section 4.2: > > > > <snip> > > - The source NVE upon receiving this MAC/IP advertisement, realizes > > that the MAC has moved to the new NVE. It updates its MAC-VRF table > > accordingly by updating the adjacency information for that MAC > > address to point to the target NVE and withdraws its EVPN MAC/IP > > route that has only the MAC address (if it has advertised such route > > previously). Furthermore, *it searches its ARP table for this MAC and* > > *sends an ARP probe for this <MAC,IP> pair*. The ARP request message is > > sent both locally to all attached TSes in that subnet as well as it > > is sent to other NVEs participating in that subnet including the > > target NVE. > > </snip> > > > > The question I have is, the MAC/IP Advertisement route the source NVE > receives from the target NVE in the above case has only the MAC address of > the TS and the RT corresponding to the MAC-VRF. How can the source NVE > deduce the IP-VRF to search the corresponding ARP table and send an ARP > probe? > > > > Regards, > > Muthu >
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