spb-rs2/ipv4: show protocols all NWLink

NWLink BGP --- up 2018-12-14 Established

Description:    NWLink/42893/AS42893
  BGP state:          Established
    Neighbor address: 31.44.186.9
    Neighbor AS:      42893
    Neighbor ID:      10.135.155.253
    Local capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Enhanced refresh
    Neighbor capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      4-octet AS numbers
    Session:          external route-server AS4
    Source address:   31.44.186.254
    Hold timer:       26.873/30
    Keepalive timer:  2.599/10
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         3 imported, 0 filtered, 7941 exported
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:              3          0          0          0          3
      Import withdraws:            0          0        ---          0          0
      Export updates:          84589          3      68784        ---      15802
      Export withdraws:        10433        ---        ---        ---       4415
    BGP Next hop:   31.44.186.254