DIS generate pseudonodes and pseudonodes LSP. Pseudonodes build the neighbor to other isis routers include DIS, like the DR function in OSPF, pseudonodes is used for saving the ISIS database synchronous entrys and reducing flooding, so I think this mechnism can have a good performance in cpu and routing table resourse.
However, in P2P ISIS network ISIS LSA run on a different way,
So My problem comes out:
Pseudonodes is not the real router but it will occupy extra LSP item！
A network IGP is constructed upon ISIS broadcast way, if I change the router-router isis neighbor link to p2p mode, will I get a better convergence
time, isis database saving or cpu resource。And if I do this， what happend to the ISIS like isis neighbor down then rebuild or other fault?
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