> From: James Bensley [mailto:[email protected]] > Sent: Wednesday, October 03, 2018 10:51 AM > > On Wed, 3 Oct 2018 at 10:13, Mark Tinka <[email protected]> wrote: > > On 3/Oct/18 11:09, [email protected] wrote: > > > > If you'd have separate ISIS process for v6 would it be possible to > > spin up a separate/dedicated BFD process for that ISIS? > > Unless I'm mistaken BFD isn't "multi-tenant", so only one set of BFD packet > exchanges can exist per-interface, there is no support for multiple BFD > session on the same interface (by which I mean layer 2 broadcast domain in > the case of sub-interfaces). This kind of makes sense as BFD is supposed to > test for unidirectional communication failure of the physical link (the fact > that > it runs in both directions gives bidirectional failure detection). So we can > run > BFDv4 and/or > BFDv6 on an interface but only one instance per-interface otherwise you'd > need to negotiate different port numbers for the different instances on the > same interface? > Yes you're right the main purpose is link failure detection,
I've been wondering for quite some time why vendors don’t allow us to configure BFD as a standalone protocol very much like any other IGP protocol and instead insist on doing that themselves automatically under the hood. I imagine the following: set protocols bfd interface xe-0/0/0 family inet source-address x.x.x.x set protocols bfd interface xe-0/0/0 family inet mode echo set protocols bfd interface xe-0/0/0 family inet minimum-interval xx set protocols bfd interface xe-0/0/0 family inet multiplier x set protocols bfd interface xe-0/0/1 family inet source-address x.x.x.x set protocols bfd interface xe-0/0/1 family inet mode echo set protocols bfd interface xe-0/0/1 family inet minimum-interval xx set protocols bfd interface xe-0/0/1 family inet multiplier x set interfaces xe-0/0/0 gigether-options 802.3ad ae0 set interfaces xe-0/0/1 gigether-options 802.3ad ae0 set interfaces ae0 aggregated-ether-options lacp bfd-liveness-detection set protocols isis interface ae0.0 bfd-liveness-detection set protocols ospf interface ae0.0 bfd-liveness-detection set protocols ldp interface ae0.0 bfd-liveness-detection adam _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
