[j-nsp] isis adjacencies and isis database entries

[snort bsd]

Hello, all:

Shouldn't the entries in the output of "show isis adjacency" be one-to-one relationship with the neighbor entries in "show isis database details"?

Assume r1 peers with r2, r3 and r4 in level 2 (single connection to each neighbor)

user at r1> show isis database level 2 r1.00-00 detail 
IS-IS level 2 link-state database:

r1.00-00 Sequence: 0x5a92, Checksum: 0xb28c, Lifetime: 65521 secs
   IS neighbor: r2.00                           Metric:        10
   IS neighbor: r3.00                           Metric:        10
   IS neighbor: r4.00                           Metric:        10
  ...

user at r1> show isis adjacency
Interface             System         L State        Hold (secs)  SNPA
ge-1/0/0.0           r2                 2 Up                        18
ge-2/2/0.0           r3                 2 Up                         23
so-0/2/0.0           r4                 2 Up                         28


but in some cases, they are not. I have one router (say r1), it has adjacency with r2 (on the output of "show isis adjacency) but the r2 entry doesn't show up in the output of "show isis database details".

user at r1> show isis adjacency
Interface             System         L State        Hold (secs)  SNPA
ge-1/0/0.0           r2                 2 Up                        18
ge-2/2/0.0           r3                 2 Up                         23
so-0/2/0.0           r4                 2 Up                         28

user at r1> show isis database level 2 r1.00-00 detail 
IS-IS level 2 link-state database:

r1.00-00 Sequence: 0x5a92, Checksum: 0xb28c, Lifetime: 65521 secs
   IS neighbor: r3.00                           Metric:        10
   IS neighbor: r4.00                           Metric:        10
...

but on r2 router, i can see r1 entry on both outputs of "show isis adjacency" and "show isis database details". also the interfaces are taking traffic between r1 and r2. Why is that?







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