sfo-1.us/ipv4: show protocols all DN42_lantian

DN42_lantian BGP master up 2021-06-07 Established

Preference:     100
  Input filter:   (unnamed)
  Output filter:  (unnamed)
  Import limit:   1000
    Action:       block
  Routes:         497 imported, 20 filtered, 80 exported, 435 preferred
  Route change stats:     received   rejected   filtered    ignored   accepted
    Import updates:         507357          0      18926      42825     445606
    Import withdraws:         8908          0        ---      18981       7939
    Export updates:         537746     394985          8        ---     142753
    Export withdraws:         5221        ---        ---        ---      27867
  BGP state:          Established
    Neighbor address: 172.22.76.185
    Neighbor AS:      4242422547
    Neighbor ID:      172.18.0.3
    Neighbor caps:    refresh enhanced-refresh restart-aware AS4 ext-messages
    Session:          external AS4
    Source address:   172.20.194.90
    Route limit:      517/1000
    Hold timer:       178/240
    Keepalive timer:  24/80