[c-nsp] IS-IS on L3 vlan interfaces

[Walter Keen]

I'm having some trouble getting (integraded) IS-IS to form an adjacency
over a L3 vlan that has 3 routers in it.  It's on a Cisco 7600 series
with 12.2(33)SRE code, however if I configure the vlan interface with
the network type point-to-point, it comes up as expected.  Since they
all have dot1q trunks to a metro ethernet provider, I could certainly
make vlans to form point to point connections to all of them, but I
don't really want to unless I have to.

Does anyone have experience with this sort of issue?  I get as far as,
with debug isis adj, I can see router A send packets, and B/C (all in
the same ethernet segment/broadcast domain) receive it and transmit
packets, presumabely in response, but A 's debug never indicates
receiving an isis packet.  isis and clns neighbor state on B and C get
stuck in INIT