The timing lines up with a link flap that was experienced on the 4x100G between Ridgeview, and 511.  The 511 switch showed a RX loss on all 4 channels simultaneously (there is not a diverse fiber path at the moment).

core-sw0(s1)#sh int po 10

Port-Channel10 is up, line protocol is up (connected)

  Hardware is Port-Channel, address is 2899.3ae5.35e9

  Description: Ridgeview

  Ethernet MTU 9214 bytes , BW 400000000 kbit

  Full-duplex, 400Gb/s

  Active members in this channel: 4

  ... Ethernet3/35/1 , Full-duplex, 100Gb/s

  ... Ethernet3/36/1 , Full-duplex, 100Gb/s

  ... Ethernet6/35/1 , Full-duplex, 100Gb/s

  ... Ethernet6/36/1 , Full-duplex, 100Gb/s

  Fallback mode is: off

  Up 6 hours, 16 minutes, 27 seconds

  2 link status changes since last clear

  Last clearing of "show interface" counters 15 days, 23:15:03 ago

  5 minutes input rate 8.36 Gbps (2.2% with framing overhead), 2046578 packets/sec

  5 minutes output rate 36.4 Gbps (9.2% with framing overhead), 3646672 packets/sec

     2857754359153 packets input, 1491272402763337 bytes

     Received 2308335 broadcasts, 8733937 multicast

     0 input errors, 0 input discards

     5706404987428 packets output, 7487480901783768 bytes

     Sent 43461213 broadcasts, 52158407 multicast

     0 output errors, 0 output discards

Hi all,

Anyone else noticing the route server at 206.108.255.2 / 2001:504:27::d1af:0:2 dropping out for a second or so the last few days? I’m seeing similar from both of my routers.

LC/0/0/CPU0:Sep  8 07:29:45.717 CDT: bfd_agent[173]: %L2-BFD-6-SESSION_STATE_DOWN : BFD session to neighbor 2001:504:27::d1af:0:2 on interface HundredGigE0/0/0/20 has gone down. Reason: Control timer expired

RP/0/RSP0/CPU0:Sep  8 07:29:45.718 CDT: bgp[1065]: %ROUTING-BGP-5-ADJCHANGE : neighbor 2001:504:27::d1af:0:2 Down - BFD (Bidirectional forwarding detection) session down (VRF: default) (AS: 53679)

LC/0/0/CPU0:Sep  8 07:29:45.795 CDT: bfd_agent[173]: %L2-BFD-6-SESSION_STATE_DOWN : BFD session to neighbor 206.108.255.2 on interface HundredGigE0/0/0/20 has gone down. Reason: Control timer expired

RP/0/RSP0/CPU0:Sep  8 07:29:45.797 CDT: bgp[1065]: %ROUTING-BGP-5-ADJCHANGE : neighbor 206.108.255.2 Down - BFD (Bidirectional forwarding detection) session down (VRF: default) (AS: 53679)

LC/0/0/CPU0:Sep  8 07:29:50.384 CDT: bfd_agent[173]: %L2-BFD-6-SESSION_STATE_UP : BFD session to neighbor 2001:504:27::d1af:0:2 on interface HundredGigE0/0/0/20 is up

LC/0/0/CPU0:Sep  8 07:29:50.384 CDT: bfd_agent[173]: %L2-BFD-6-SESSION_STATE_UP : BFD session to neighbor 206.108.255.2 on interface HundredGigE0/0/0/20 is up

RP/0/RSP0/CPU0:Sep  8 07:30:58.517 CDT: bgp[1065]: %ROUTING-BGP-5-ADJCHANGE : neighbor 206.108.255.2 Up (VRF: default) (AS: 53679)

RP/0/RSP0/CPU0:Sep  8 07:31:01.850 CDT: bgp[1065]: %ROUTING-BGP-5-ADJCHANGE : neighbor 2001:504:27::d1af:0:2 Up (VRF: default) (AS: 53679)

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