spb-rs2/ipv4: show protocols all rtp

rtp BGP --- start 2021-09-04 Passive

Description:    rtp/50636/AS50636
  BGP state:          Passive
    Neighbor address: 185.1.153.101
    Neighbor AS:      50636
    Local AS:         50817
  Channel ipv4
    State:          DOWN
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable