I have just configured a 6850 to have a 2 port LACP with a Cisco switch (2x 1Gb fibre links through SFP)
It was noted that when doing a speedtest with no traffic, speed is fine (100Mbps as expected), but when same speedtest from same device is done while the LACP links are handling live traffic(total of 600Mbps - i.e. 300Mpbs per interface), we are reaching a much lower speed (40Mbps).
For the sake of testing, one of the interfaces was shutdown (while retaining same config) and speed reached was the same as when no traffic was being handled by LACP link.
Any help on this pls?
Config is the following:
Code: Select all
! Link Aggregate :
lacp linkagg 7 size 2 admin state enable
lacp linkagg 7 name "Internet Link"
lacp linkagg 7 actor admin key 7
lacp agg 1/21 actor admin key 7
lacp agg 1/22 actor admin key 7
> show linkagg 7
Dynamic Aggregate
SNMP Id : 40000007,
Aggregate Number : 7,
SNMP Descriptor : Dynamic Aggregate Number 7 ref 40000007 size 2,
Name : Internet Link,
Admin State : ENABLED,
Operational State : UP,
Aggregate Size : 2,
Number of Selected Ports : 2,
Number of Reserved Ports : 2,
Number of Attached Ports : 2,
Primary Port : 1/21
LACP
MACAddress : [00:e0:b1:d4:e5:00],
Actor System Id : [00:00:00:00:00:00],
Actor System Priority : 0,
Actor Admin Key : 7,
Actor Oper Key : 7,
Partner System Id : [00:00:00:00:00:00],
Partner System Priority : 0,
Partner Admin Key : 0,
Partner Oper Key : 32,
Pre-emption : DISABLED,
Pre-empt Value : 30