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Question

LAG Ports Congestion


Userlevel 4
Create Date: May 26 2013 10:10AM

Hi Expert,

I am using two switch with different version and hardware but all are extremeware product.

I am facing problem for LAG port congestion but utilization is below 50% . there is no system log .

How can it be solve, please suggest.

LAG between BD-8810 <> Alpine3804

BD-8810(DHK2SIBD1):-
===============
Image : ExtremeXOS version 12.3.2.5 v1232b5 by release-manager
BootROM : 1.0.4.2

Alpine3804(DHK2SI1):-
===============
Image : Extremeware Version 7.8.1.1
BootROM : 8.2

Ports congestion Log:-
=========================
BD-8810 # show ports 3:41-42 congestion

Port Congestion Monitor Tue May 21 15:21:26 2013

Port Link Packet

State Drop

================================================================================
3:41 A 954
3:42 A 134

Alpine3804:-
dont know how to check congestion , i think it does not support.

Ports Utilizationlog BD-8810 <> Alpine3804

BD-8810(DHK2SIBD1):-
=====================
-----------------------------------------------------------------------------------------------------------------------------------
DHK2SIBD1.5 # show ports 3:1 , 4:4 , 3:41, 3:42 utilization
Link Utilization Averages Wed May 22 15:44:58 2013
Port Link Link Rx Peak Rx Tx Peak Tx
State Speed % bandwidth % bandwidth % bandwidth % bandwidth
================================================================================
DHK2SI1 A 1000 38.08 48.22 25.29 32.50
3:41 A 1000 38.91 49.60 48.51 59.64
3:42 A 1000 38.59 48.48 45.75 55.48
To_DHK2S> A 1000 37.24 47.59 24.83 31.43

-------------------------------------------------------------------------------------------------------------------------------------

Alpine3804 (DHK2SI1):
=====================

Link Utilization Averages Wed May 22 16:10:12 2013
Port Link Link Receive Peak Rx Transmit Peak Transmit
Status Speed % bandwidth % bandwidth % bandwidth % bandwidth
======================================================================================
4:9 A 1000 25.52 67.41 38.13 51.49
4:10 A 1000 45.97 100.00 38.42 100.00
DHK2SIBD1 A 1000 48.38 100.00 39.20 100.00
To_DHK2SIBD1 A 1000 24.89 37.94 37.77 52.63

Ports Sharing configuration:-
==============================

BD-8810 <> Alpine3804

BD-8810(DHK2SIBD1):-
enable sharing 3:1 grouping 3:1, 3:41-42, 4:4, algorithm address-based L2

Alpine3804 (DHK2SI1):
enable sharing 4:9 grouping 4:9,4:10,4:12,4:16 algorithm address-based

Please reply.

(from M._Nabi)

1 reply

Userlevel 4
Create Date: May 28 2013 3:04PM

Hello msisir

I noticed that on the 8800 you have the algorithm set to be L2. That only looks at MAC to do the hash for which link the traffic flows. try using L3_L4 to get a better mix and a finer hash distribution

Let us know if that helps

P (from Paul_Russo)

Reply