rix-rs1/ipv4: show protocols all nexus

nexus BGP --- up 2021-09-23 Established

Description:    nexus/49778/as-nxss
  BGP state:          Established
    Neighbor address: 193.27.39.142
    Neighbor AS:      49778
    Local AS:         49634
    Neighbor ID:      91.219.23.255
    Local capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Enhanced refresh
      Long-lived graceful restart
    Neighbor capabilities
      Multiprotocol
        AF announced: ipv4
      Route refresh
      Graceful restart
      4-octet AS numbers
      Long-lived graceful restart
    Session:          external route-server AS4
    Source address:   193.27.39.100
    Hold timer:       68.499/90
    Keepalive timer:  25.834/30
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable
    Routes:         3 imported, 0 filtered, 99116 exported, 3 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:              7          0          0          3          4
      Import withdraws:            1          0        ---          0          1
      Export updates:         512940          5          0        ---     512935
      Export withdraws:       267202        ---        ---        ---     267200
    BGP Next hop:   193.27.39.100