Does Lucy refer to the scenario that, if host_A requests MAC of host_B which resides in the same switched network, the default gateway should not reply such ARP request, otherwise host_A will receive ARP reply both from host_B and default gateway.
Lizhong > > Re: [nvo3] Multi-subnet VNs - should be a new service type? > > Certainly. But how it that an issue? > -- > Jakob Heitz. > > > From: [email protected] [mailto:[email protected]] On Behalf Of > Lucy yong > Sent: Thursday, December 27, 2012 3:20 PM > To: Jakob Heitz; Black, David > Cc: [email protected] > Subject: Re: [nvo3] Multi-subnet VNs - should be a new service type? > A host may get an arp request via the switched network and reply > with its MAC address if IP address matches. > This is current host be behavior. > Lucy > > From: Jakob Heitz [mailto:[email protected]] > Sent: Thursday, December 27, 2012 5:18 PM > To: Lucy yong; Black, David > Cc: [email protected] > Subject: RE: Multi-subnet VNs - should be a new service type? > > Multicast traffic is not at issue. > You said: > This will have an issue if VAP of EVPN are via a switched network > What is the issue? > -- > Jakob Heitz > > > > From: Lucy yong [mailto:[email protected]] > Sent: Thursday, December 27, 2012 3:04 PM > To: Jakob Heitz; Black, David > Cc: [email protected] > Subject: RE: Multi-subnet VNs - should be a new service type? > > > From: Jakob Heitz [mailto:[email protected]] > Sent: Thursday, December 27, 2012 3:25 PM > To: Lucy yong; Black, David > Cc: [email protected] > Subject: RE: Multi-subnet VNs - should be a new service type? > > What is the issue? > > Are you referring to the case where a network > is connected to multiple EVPN PEs in a multihoming > arrangement? > [Lucy] no, for multihoming case, there is designated forwarder to > forward multicast traffic. > > If that is the case, then I think the EVPN draft is > not clear. It should point out that an EVI acting as > standby in an active-standby topology can not act > as Default Gateway. > -- > Jakob Heitz. > > > > From: Lucy yong [mailto:[email protected]] > Sent: Thursday, December 27, 2012 11:06 AM > To: Jakob Heitz; Black, David > Cc: [email protected] > Subject: RE: Multi-subnet VNs - should be a new service type? > This will have an issue if VAP of EVPN are via a switched network. > Need to modify the ARP response schema. > > Lucy > > From: Jakob Heitz [mailto:[email protected]] > Sent: Thursday, December 27, 2012 12:58 PM > To: Lucy yong; Black, David > Cc: [email protected] > Subject: RE: Multi-subnet VNs - should be a new service type? > > The Default Gateway feature of EVPN helps to avoid tromboning. > http://tools.ietf.org/html/draft-ietf-l2vpn-evpn-02, Sec. 11.1. > Every PE responds to the ARP request for the default router > and every PE will route packets with the destination MAC of the > default router. > -- > Jakob Heitz. x25475. 510-566-2901 > >
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