spb-rs2/ipv4: show protocols all avantel2

avantel2 BGP --- start 2021-09-17 Passive Error: BFD session down

Description:    avantel2/51178/AS-AVANTEL-SPB
  BGP state:          Passive
    Neighbor address: 185.1.152.177
    Neighbor AS:      51178
    Local AS:         50817
    Last error:       Error: BFD session down
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable