12-29-2010 06:18 AM
Hey Everyone,
Just a real simple question. Does anyone know if the Cisco SG 300-28P Small Business Switches support Etherchannel?
Thanks,
neocec
Solved! Go to Solution.
12-29-2010 11:23 AM
Yes sir, Etherchannels or LAGs (Link Aggregation Groups) are supported
Two types of LAGs are supported:
•
Static—A LAG is static if the LACP (Link Aggregation Control Protocol) is
disabled. You configure a static LAG with a group of ports that are always
active members of the LAG.
•
Dynamic—A LAG is dynamic if it is LACP-enabled. You define a group of
ports as candidate ports of a dynamic LAG. The LACP determines which
candidate ports from the LAG are active member ports. The non-active
member ports are standby ports ready to replace any failing active member
ports
Hope this helps, please let us know if you have further questions.
Eric Moyers
Cisco SBSC Network Engineer
1-866-606-1866
12-29-2010 11:23 AM
Yes sir, Etherchannels or LAGs (Link Aggregation Groups) are supported
Two types of LAGs are supported:
•
Static—A LAG is static if the LACP (Link Aggregation Control Protocol) is
disabled. You configure a static LAG with a group of ports that are always
active members of the LAG.
•
Dynamic—A LAG is dynamic if it is LACP-enabled. You define a group of
ports as candidate ports of a dynamic LAG. The LACP determines which
candidate ports from the LAG are active member ports. The non-active
member ports are standby ports ready to replace any failing active member
ports
Hope this helps, please let us know if you have further questions.
Eric Moyers
Cisco SBSC Network Engineer
1-866-606-1866
12-29-2010 01:06 PM
That answers my question perfectly!! Thank you!
neocec
07-04-2012 08:04 AM
Robert0979,
Each LAG can consist of a maximum of 8 physical interface per static LAG and no more than 16 ports can be candidate for dynamic lag. While the switch supports a maximum of 8 LAGS.
02-24-2011 06:47 AM
Hello,
As long as you have less than 8 aggregate groups, can all ports on the SG300s be configured in aggregation mode?
Thanks,
R979
07-04-2012 07:38 AM
Dear,
I have question as above topices.
Does you know SG 300 52 port Gigi switch and 2960S can link with together as ether-channel ?
As I know, each of hardware can support that feature, but if link with together as ether-channel is quite difficult.
Waiting for your advice.
Many thanks,
Tommy
07-04-2012 07:59 AM
Hi Tommy Sum,
The answer is yes. You need to be careful when making the channel connections however. Make sure to run the exact same commands otherwise spanning-tree will loop the switch and likely crash the SG 300.
A simple channel-group mode on command on both switch will work fine. Do not mess with any LACP setting. Also notice, if you're having issues with the SG 300 getting loops it may be because of the auto edge port.
If you do a show spanning-tree active, check to see if port fast negotiated on the links within the channel group. If it has, you need to go to the interfaces and do a no spanning-tree portfast.
This should resolve any problems.
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