spb-rs1/ipv4: show protocols all flex

flex BGP --- up 2021-11-06 Established

Description:    flex/21453/AS-FLEX
  BGP state:          Established
    Neighbor address: 185.1.153.118
    Neighbor AS:      21453
    Local AS:         50817
    Neighbor ID:      80.252.128.1
    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
        Restart time: 120
        AF supported: ipv4
        AF preserved:
      4-octet AS numbers
    Session:          external route-server AS4
    Source address:   185.1.152.255
    Hold timer:       128.770/180
    Keepalive timer:  9.271/60
  Channel ipv4
    State:          UP
    Table:          master4
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   500
      Action:       disable
    Routes:         81 imported, 2 filtered, 109974 exported, 73 preferred
    Route change stats:     received   rejected   filtered    ignored   accepted
      Import updates:            710          0          7         30        673
      Import withdraws:          594          0        ---         12        589
      Export updates:        3486043        724       6658        ---    3478661
      Export withdraws:      2462787        ---        ---        ---    2458372
    BGP Next hop:   185.1.152.255