rs1/ipv4: show protocols all pb_4_tier_as50515_1

pb_4_tier_as50515_1 BGP --- start 15:24:59.109 Connect BGP Error: Hold timer expired

Description:    Tier 1
  BGP state:          Connect
    Neighbor address: 86.104.125.149
    Neighbor AS:      50515
    Last error:       BGP Error: Hold timer expired
  Channel ipv4
    State:          DOWN
    Table:          t_4_tier_as50515_1
    Preference:     100
    Input filter:   (unnamed)
    Output filter:  (unnamed)
    Import limit:   50
      Action:       restart