rs1/ipv4: show protocols all pb_0021_as59813

pb_0021_as59813 BGP --- start 2020-10-18 18:00:13 Connect Socket: No route to host

Description:    AS59813 - Delight Fiber
  BGP state:          Connect
    Neighbor address: 185.1.179.37
    Neighbor AS:      59813
    Local AS:         60113
    Last error:       Socket: No route to host
  Channel ipv4
    State:          DOWN
    Table:          t_0021_as59813
    Preference:     100
    Input filter:   f_import_as59813
    Output filter:  f_export_as59813
    Import limit:   600
      Action:       restart