I have below setup:
+------------------+ vPC +------------------+
| | | |
| NX5K-SW01 +-----------------------+ NX5K-SW02 |
| | | |
+------------------+--+ +--+------------------+
| |
| |
| |
FET1 | | FET2
| |
| |
| |
+----+-----------------+----+
| |
| NX2K |
| |
+---------+-----+-----------+
| |
| |
| |
| Eth101/1/37
| +
Eth101/1/38 |
+ |
| |
+--------+-----+--------+
| |
| Cisco ASA |
| |
+-----------------------+
Eth101/1/37
and Eth101/1/38
are members of port-channel 22, which is utilized for voice traffic (RTP). Now, when I look at the link utilization, I see below numbers (it's the same on NX5k-SW02 obviously):
NX5K-SW01# show port-channel traffic interface port-channel 22
ChanId Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
22 Eth101/1/38 0.0% 0.0% 50.00% 1.62% 0.0% 0.0%
22 Eth101/1/37 0.0% 100.00% 49.99% 98.37% 0.0% 100.00%
loadbalancing is default on NX5k switches:
NX5K-SW01# show port-channel load-balance
Port Channel Load-Balancing Configuration:
System: source-dest-ip
Port Channel Load-Balancing Addresses Used Per-Protocol:
Non-IP: source-dest-mac
IP: source-dest-ip source-dest-mac
and on the ASA it is: src-dst-ip
The ASA has other port-channel connections to NX2k, which are showing normal loadbalancing 50/50.
Any idea why this port-channel is behaving like this?