Hi.
Can anyone explain why I have a tx/rx BFD counter discrepancy with our neighbor? (6090/5340, in the exampe below.) Even though I’m not missing any hello packets.
I’ve cleared the BFD counters but they continue to increment at the same ratio, (1.14/1). Our neighbor has the same timers and multipliers conffgured.
We have another BFD/BGP instance showing exactly the same ratio of tx/rx counters.
Both instances are talking to our partner’s Juniper routers. Our router is an X590 running 30.6.1.11.
router#1 # sh bfd count
Valid Tx Pkt : 6090 Valid Rx Pkt : 5340
Rx Invalid TTL : 0 Rx Invalid UDP SrcPort : 0
Interface Not found : 0 Rx Invalid Version : 0
Rx Invalid Length Pkt : 0 Rx Invalid Multiplier : 0
Rx Invalid Demand Mode : 0 Rx Poll & Final set : 0
Rx Invalid My Discriminator : 0 Rx Invalid Your Discriminator : 0
Rx Invalid Auth Length : 0 Rx session Not Found : 0
Auth Type Fails : 0 Authentication Fails : 0
Tx Fails : 0 Rx Discarded Pkt : 0
router#1 # sh bfd session detail
Neighbor : a.b.c.1 Local : a.b.c.2
VR-Name : VR-Default Interface : www-vlan
Session Type : Single Hop State : Up
Detect Time : 5000 ms Age : 766 ms
Discriminator (local/remote) : 1 / 648
Demand Mode (local/remote) : Off / Off
Poll (local/remote) : Off / Off
Tx Interval (local/remote) : 1000 / 1000 ms
Rx Interval (local/remote) : 1000 / 1000 ms
oper Tx Interval : 1000 ms
oper Rx Interval : 1000 ms
Multiplier (local/remote) : 5 / 5
Local Diag : 0 (No Diagnostic)
Remote Diag : 0 (No Diagnostic)
Authentication : None
Clients : BGP
Uptime : 00 days 01 hours 33 minutes 54 seconds
Up Count : 1
Last Valid Packet Rx : 09:24:59.1933379584
Last Packet Tx : 09:25:00.807600640
Hardware Assist : No
router#1 #
router#1 # show bfd session counters missed-hellos no
===============================================================================
Neighbor Session ID Number Of Misses
1 2 2+
===============================================================================
a.b.c.1 1 0 0 0
===============================================================================
> in Neighbour indicates vlan Name truncated past 8 characters
> in Count indicates value exceeds column width.
router#1 #
