spb-rs1/ipv4: show protocols all linkey

linkey BGP --- up 2020-04-25 Established

Description:    linkey/13002/AS-LINKEY
  BGP state:          Established
    Neighbor address: 185.1.152.141
    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:   185.1.152.255
    Hold timer:       137.806/180
    Keepalive timer:  11.381/60
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   5000
      Action:       disable
    Routes:         13 imported, 0 filtered, 91539 exported
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            786          0         48         10        728
      Import withdraws:            1          0        ---         48          1
      Export updates:        4598887      11852          1        ---    4587034
      Export withdraws:      2632238        ---        ---        ---    2633568
    BGP Next hop:   185.1.152.255