spb-rs2/ipv4: show protocols all Linkey

Linkey BGP --- up 2018-12-29 Established

Description:    Linkey/13002/AS-LINKEY
  BGP state:          Established
    Neighbor address: 31.44.186.141
    Neighbor AS:      13002
    Neighbor ID:      213.159.127.1
    Local capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Enhanced refresh
    Neighbor capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
        Restart time: 120
        AF supported: ipv4
        AF preserved:
      4-octet AS numbers
      Enhanced refresh
    Session:          external route-server AS4
    Source address:   31.44.186.254
    Hold timer:       121.802/180
    Keepalive timer:  9.602/60
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         10 imported, 0 filtered, 66834 exported
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            100          0          0          0        100
      Import withdraws:            0          0        ---          0          0
      Export updates:         491641        100          0        ---     491541
      Export withdraws:       205664        ---        ---        ---     205664
    BGP Next hop:   31.44.186.254