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Trunk link aggregation

I have a Cisco 3560 L2/L3 that will be connecting to an HP 2910al access switch.

On the 3560, I have a few VLans set up. because of the amount of data going across the switches, I want to aggregate the link between the switches. I have been looking for information on aggregating trunks and have not found much useful information. I find information on aggregating access ports all day long.

Can someone assist with commands and examples.

Thanks,

atlas_shuddered

To clarify, you want to trunk the two switches together with a bundled channel-group?

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Soulja

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dustaine

ASKER

atlas_shuddered - on the 3560 I have several VLANS configured. say 300 - 309. They will be carrying a lot of data. I want to take ports 46 - 48 on the 3560 and create a port group and aggregate them and allow data from vlans 300-309 to traverse to the HP Switch which will have ports on various vlans.
Port 1-5 might be on vlan 300
port 6-10 might be on vlan 301 etc.

Thanks,

dustaine

ASKER

On the Cisco Side, would it basically look like the following?

interface Port-channel2
description STTS-Switch
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 300-309
switchport mode trunk

Then on the various physical ports:
interface GigabitEthernet0/36
description STTS-Switch
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 300-309
switchport mode trunk
channel-group 2 mode on

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Soulja

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dustaine

ASKER

This is what I have thus far on the CISCO

interface Port-channel2
description STTS-Link aggregation
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 300-309
switchport mode trunk
!

!
interface GigabitEthernet0/46
description STTS Aggregate Link
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 300-309
switchport mode trunk
channel-group 2 mode active
!
interface GigabitEthernet0/47
description STTS Aggregate Link
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 300-309
switchport mode trunk
channel-group 2 mode active
!
interface GigabitEthernet0/48
description STTS Aggregate Link
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 300-309
switchport mode trunk
channel-group 2 mode active
!

I assume LACP mode provides better traffic compatibility between CISCO and HP?

Soulja

LACP is just a negotiation protocol to automatically setup the etherchannel. It should work fine between a Cisco and HP being a standards based protocol protocol. Mode On, uses no negotiation protocol and is considered a static etherchannel. You will also want to make sure your spanning tree between the two works fine, being Cisco user a Per-vlan based spanning tree. I believe HP's use common spanning tree. I could be wrong here and that's another topic.

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atlas_shuddered

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Soulja

@atlas

Good catch!

atlas_shuddered

@Soulja - LOL, Nah. Just flashbacks of long hours of cranial de-pelting.

Soulja

@atlas

ROFL!

dustaine

ASKER

Soulja and Atlas, wanted to report back that everything seems to be up and running on both switches. Communication seems happy and I am happy. Thanks for the verification and pointers.

Soulja

Awesome. Thanks for the update!

atlas_shuddered

Sounds good. Cheers