spb-rs1/ipv4: show protocols all FirstLine

FirstLine BGP --- start 2019-07-25 Connect Error: BFD session down

Description:    FirstLine/43267/AS-LINETEL
  BGP state:          Connect
    Neighbor address: 31.44.186.107
    Neighbor AS:      43267
    Last error:       Error: BFD session down
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable