Port Load sharing

[Paul11]

After i enable Lacp .. port is not sharing. Utilization is high on Link 1 only.
I want to use load balance on both links.
Please kindly see the below output and advice thanks.

* I try L2 static, L3_L4 and LACP. all the same ports are not load balance. *

enable sharing 1 grouping 1,4

enable sharing 1 grouping 1,4 L3_L4

enable sharing 1 grouping 1,4 algorithm address-based L3_L4 lacp


CoreSW # sh port 1,4 utilization bandwithPort Link Link Rx Peak Rx Tx Peak Tx
State Speed % bandwidth % bandwidth % bandwidth % bandwidth
================================================================================
Link_1> A 1000 82.06 94.94 48.23 55.72
Link_2> A 1000 0.25 0.30 1.34 1.57
================================================================================
> indicates Port Display Name truncated past 8 characters
Link State: A-Active, R-Ready, NP-Port Not Present, L-Loopback

CoreSW #sh sharing
Load Sharing Monitor
Config Current Agg Ld Share Ld Share Agg Link Link Up
Master Master Control Algorithm Group Mbr State Transitions
==============================================================================
1 1 LACP L3_L4 1 Y A 0
L3_L4 4 Y A 0
==============================================================================
Link State: A-Active, D-Disabled, R-Ready, NP-Port not present, L-Loopback
Load Sharing Algorithm: (L2) Layer 2 address based
(L3_L4) Layer 3 address and Layer 4 port based
Number of load sharing trunks: 1


Core2 # sh lacp lag 1
Lag Actor Actor Partner Partner Partner Agg Actor
Sys-Pri Key MAC Sys-Pri Key Count MAC
--------------------------------------------------------------------------------
1 0 0x03e9 00:04:96:34:b2:e1 0 0x03e9 2 00:04:96:34:b2:e0

Port list:

Member Port Rx Sel Mux Actor Partner
Port Priority State Logic State Flags Port
--------------------------------------------------------------------------------
1 0 Current Selected Collect-Dist A-GSCD-- 1001
4 0 Current Selected Collect-Dist A-GSCD-- 1012
================================================================================
Actor Flags: A-Activity, T-Timeout, G-Aggregation, S-Synchronization
C-Collecting, D-Distributing, F-Defaulted, E-Expired

[Drew_C]

Hi Paul,
I found your case number in our system and will let the case owner know about this thread and the urgency.

We're here to help, no worries on being "messy" 🙂

You could try to add a 3rd link to the port group - depending on how many streams there are, the additional link could make a difference in the way they are hashed. If you could upgrade the links to 10G (via XGM module for X450a), then this problem would likely clear itself. Stacking the two switches could also be an option, but would be considerably more difficult to implement since the network is already configured.

-Drew

[Paul11]

Thanks Drew,

Aldy open TAC with high-priority yesterday. still not get the solution and recommendation. So finding the solutions to work around. apology for my quiz are messy in the HUB.

BRgds,
Paul

[Drew_C]

Hi Paul,
If this is an urgent or high-priority issue, please consider opening a support case with TAC. They will be your best resource for understanding the situation and helping to find a solution in a timely manner.

If you haven't tried the L2 algorithm, I would recommend making that adjustment. My apologies if you've already mentioned trying that.

Please keep us updated!

-Drew

[Paul11]

Hi Drew,

I have been asking this question in several places. Because this is high priority for me I cannot find the guideline and documentation about this. And I didn't get the appropriate answer to reply my customer. Thank you for your answer.

Yes we have a big problem with the traffic favoring on only one link.
Previously, only 1 link saturation experienced.

We want to load balance the traffic on both link not on a single link. Because users are experienced of network slow and video cannot stream.

Multicast Traffic for (CCTV video network) is between two core switches.

I am using the L3_L4 algorithm LACP , But I only see one link more saturated than the other. Link1 is 82 % and Link2 is only 0.25 %

We want to achieve load balanced on link1 and link2.

We need your support.

Please suggest.

BRgds,
Paul

[PARTHIBAN_CHINN]

Try these steps:
If
1.configure sharing address-based custom

check if it load shares

else
configure sharing address-based custom hash-algorithm [xor | crc-16 | crc-32]
try CRC-16----If it doesnt help try CRC-32

One or the other way changing hashing must help.