[j-nsp] VRRP for IPv6

[Thomas Bellman]

On 2022-01-25 22:53, Chris Adams via juniper-nsp wrote:

> I wasn't planning to use a virtual link-local address, so I didn't put
> one.  The JUNOS VRRP for v6 example doesn't include one, although then
> the JUNOS documentation for virtual-link-local-address is oddly
> confusing:

For IPv6, the VRRP protocol requires that the link-local address is
virtual; it *must* be present in the list of virtual addresses a VRRP
node announces.

But Junos does indeed generate one automatically for you; you don't
need to add a virtual-link-local-address stanza.  And the link-local
address should show up when you run 'show vrrp':

  bellman at Bluegrass2> show vrrp 
  Interface  State  Group  VR state VR Mode  Timer    Type  Address
  irb.214    up         1  master   Active   A 0.461  lcl   2001:6b0:17:180::3
                                                      vip   fe80::200:5eff:fe00:201
                                                      vip   2001:6b0:17:180::1


(Unfortunately I don't have any immediate ideas of why VRRP for IPv6
doesn't work for you, or why you don't see the outgoing packets using
'monitor traffic'.  When I test on a couple of QFX:es and EX4600:s, I
can see both outgoing and incoming VRRP packets.)


	/Bellman

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