anycast rp msdp
初期設定
iosv-3#sh ip msdp summary
MSDP Peer Status Summary
Peer Address AS State Uptime/ Reset SA Peer Name
Downtime Count Count
172.16.1.2 ? Up 00:03:53 0 0 ?
iosv-3#sh ip msdp peer
MSDP Peer 172.16.1.2 (?), AS ?
Connection status:
State: Up, Resets: 0, Connection source: Loopback1 (172.16.1.1)
Uptime(Downtime): 00:04:24, Messages sent/received: 6/5
Output messages discarded: 0
Connection and counters cleared 00:06:24 ago
SA Filtering:
Input (S,G) filter: none, route-map: none
Input RP filter: none, route-map: none
Output (S,G) filter: none, route-map: none
Output RP filter: none, route-map: none
SA-Requests:
Input filter: none
Peer ttl threshold: 0
SAs learned from this peer: 0
Number of connection transitions to Established state: 1
Input queue size: 0, Output queue size: 0
MD5 signature protection on MSDP TCP connection: not enabled
Message counters:
RPF Failure count: 0
SA Messages in/out: 0/1
SA Requests in: 0
SA Responses out: 0
Data Packets in/out: 0/1
iosv-3#sh ip pim rp mapping
PIM Group-to-RP Mappings
Group(s): 224.0.0.0/4, Static
RP: 10.0.0.1 (?)・show ip msdp peerを見る限り、チューニングめっちゃできそう
・ただ基本的な設定はシンプル。ip msdp peer x.x.x.x connect-source [loopbackN]でピアの指定をする⇒ip msdp originator-id [loopbackN]でピアの送信元を指定する⇒ip pim rp-address [loopbackN+1]でRPアドレスを指定（スタティックの場合）
・OSPFやその他プロトコルのルータIDとoriginator-idが被らないように注意
・ルータ起動時からパケットキャプチャしていてもMSDPピアを接続するパケットがなく最初からKEEPALIVEを出していた
・調べてみるとどうやら接続自体はTCPが行っているそう