i su 172.16.0.0/16 [115/30] via 0.0.0.0, Null0
Nigel, the other interesting thing about this route as I see it, is the last
part of the line.
The source is IS-IS, the su maybe we are guessing it is short for summary,
but we don't know, and then we get to that route via 0.0.0.0 comma null0
Without looking at some router output, this looks a bit unusual as well.
Want to call it one of those Cisco things?
I did not see a route to 0.0.0.0 in either of your show ip route outputs.
IS-IS level one routers, if my recollection is correct, are analogous to
OSPF stub area. In fact, it seems to me that on one of tests, I actually saw
a 0.0.0.0 route generated by a level 1 router. did you spot anything like
this on any of your level 1's?
I will certainly keep an eye out when I set up next time.
Chuck
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