03-18-2010 01:04 PM - edited 03-06-2019 10:12 AM
Hi all,
6513-1 & 2 connected via Etherchannel. New backup server connected (dual NIC/Teaming) and it has the Team option: 802.3ad Dynamic with Fault Tolerance. Iam wondering if we enable 'LACP' passive on the 6500 interfaces (where the server NICs connecting), will it help speeding up the server backup jobs? or LACP is just another way to channel 2 or more Switch ports to another switch only?
IOS supports LACP (12.2). Also, can both Ethercannel and LACP config exists same time.?
*********************************************************************************
Config:
6513-1:
Int gig 4/1
description: SERVER NIC1
switchport
channel-protocol lacp
channel-group number mode passive ---> Enable LACP only if a LACP device is detected
6513-2:
Int gig 4/1
description: SERVER NIC2
switchport
channel-protocol lacp
channel-group number mode passive ---> Enable LACP only if a LACP device is detected
*******************************************************************************
Please suggest.
Thanks
MS
Solved! Go to Solution.
03-18-2010 01:38 PM
Passive has no relation to speed , it is just to dynamically create the etherchannel . Use Active on the switch end .
03-19-2010 07:44 AM
Hi MS,
Yes, you should be fine with this config in the same switch.
HTH
Reza
03-18-2010 01:38 PM
Passive has no relation to speed , it is just to dynamically create the etherchannel . Use Active on the switch end .
03-19-2010 06:51 AM
Hi Glen,
Thank you for the reply. So..
1. Etherchannel and LACP configs can exists at same time.
2. With LACP - Even if the switch ports (where the server both NICs connects) exists on 2 different switches, it works (gives 2Gig speed to server). As I believe ether channel cannot in the same way (the ports need to be on the same sw)
3. So simple port configurations will automativally create the LACP PO# . I do not need to create any other admin keys etc.
Please suggest if that is correct.
Thank you
MS
03-19-2010 07:21 AM
mvsheik123 wrote:
Hi Glen,
Thank you for the reply. So..
1. Etherchannel and LACP configs can exists at same time.
2. With LACP - Even if the switch ports (where the server both NICs connects) exists on 2 different switches, it works (gives 2Gig speed to server). As I believe ether channel cannot in the same way (the ports need to be on the same sw)
3. So simple port configurations will automativally create the LACP PO# . I do not need to create any other admin keys etc.
Please suggest if that is correct.
Thank you
MS
MS,
You are trying to use Multichassis EtherChannel (MEC). In you case since the 6513s are not VSS your config will not work. The 2 connections from the server need to go to the same switch or a VSS pair (6500) or a set of 3750s stacked. Then you would do LACP/Active on the switch side and also the same on the server side. It actualy works well
HTH
Reza
03-19-2010 07:36 AM
Hi Reza,
Thank you for the reply and clarification. The 6513 are NOT in VSS mode. So If move the Server NICs to same chassis (diff mods), the below config would be suffice to get the 2gig speeds?
Config:
6513-1:
Int gig 4/1
description: SERVER NIC1
switchport
channel-protocol lacp
channel-group number mode active
!
Int gig 8/1
description: SERVER NIC2
switchport
channel-protocol lacp
channel-group number mode active
Thank you in advance.
MS
03-19-2010 07:44 AM
Hi MS,
Yes, you should be fine with this config in the same switch.
HTH
Reza
03-19-2010 07:52 AM
Sorry.. wanted to add full config for switch poerts..wnat to check if spanning tree portfast
makes difference. Please see below. Also, This specific to switchports, so should not have any impact on other servers in the same Vlan with
regular NIC teaming (2 switches). is that correct?
Int gig 4/1
description: SERVER NIC1
switchport
no ip address
switchport access vlan 120
switchport mode access
spanning-tree portfast
channel-protocol lacp
channel-group number mode active
Int gig 8/1
description: SERVER NIC2
switchport
no ip address
switchport access vlan 120
switchport mode access
spanning-tree portfast
channel-protocol lacp
channel-group number mode active
Thank you
MS
03-19-2010 08:14 AM
Looks good. Just make sure the sever side is also LACP. There are multiple options Microsoft offers but LACP works really well. I have not used it with port fast but that should not heard any thing.
Good Luck
Reza
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