04-20-2011 01:46 PM - edited 03-06-2019 04:43 PM
Greetings,
I do have an IBM 9117 (LPAR) with 4 network adaptors bundled together in a port-channel on Nexus 5000 switch. Things are working OK, except the packets traffics on the first two network adaptors instead of distributing the traffic evenly to all four adaptor. Does anyone have and idea of the cause of this behavior? Thank you for your assistance.
04-20-2011 01:55 PM
Hi ,
can you paste :
show port-channel load
show port-channel traffic
show port-channel summ
04-20-2011 02:11 PM
Ok, check below:-
nexus5000SW1# sh 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
nexus5000SW1# sh port-channel traffic
ChanId Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
303 Eth103/1/30 57.18% 8.59% 53.83% 3.72% 0.36% 0.54%
303 Eth103/1/3 42.81% 91.40% 46.16% 96.27% 99.63% 99.45%
nexus5000SW1# sh port-channel summary
Flags: D - Down P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended r - Module-removed
S - Switched R - Routed
U - Up (port-channel)
--------------------------------------------------------------------------------
Group Port- Type Protocol Member Ports
Channel
303 Po303(SU) Eth LACP Eth103/1/3(P) Eth103/1/30(P)
Thank you.
04-20-2011 02:19 PM
you might try change the balancing algorithm
i would try : port-channel load-balance ethernet destination-port
Do you know the balancing algorithm on the LPAR ?
Dan
04-21-2011 06:32 AM
Per our standards, we don't real do the port-channel load balancing on our switches. But If I have to implement this, can you be specific (global enabled, interface enabled?). The LPAR is set to balance the load evenly to all four ports. Thank you for your assistance.
04-21-2011 01:03 AM
Hi,
I am seeing only two interfaces in the port channel. You may want to add other two also to the channel.
Reg,
Balu
04-21-2011 06:27 AM
The other 2 ports are on a second switch. Basically we do have two switches connected via vpc. The output you see are only from the first switch, which is identical to the second switch. Thank you.
.
04-21-2011 07:02 AM
Okay then
Can you paste :
sh run int port-channel 303
sh vpc brie
04-21-2011 07:37 AM
OK, check below:-
sh run int po303:
interface port-channel303
description XXXX
vpc 303
switchport access vlan 33
spanning-tree port type edge
sh vpc brief:
vPC status
----------------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
------ ----------- ------ ----------- -------------------------- -----------
303 Po303 up success success 33
Thanks.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide