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Adding new VLAN to LACP link between HP A5800-48G and Cisco 3750 stack

forman102
Visitor

Adding new VLAN to LACP link between HP A5800-48G and Cisco 3750 stack

Hello all,

 

My name is Luke. I'm new to HP networking field, but have experience working with Cisco and Juniper gear.

I was wondering if you could help me to establish proper way of allowing new VLAN over LACP link between HP and Cisco stack. Please see below for details:

1. on HP end, I got the following production config:

interface Bridge-Aggregation3
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 30 to 31 60 70 80 900
link-aggregation mode dynamic

interface Ten-GigabitEthernet1/0/51
port link-mode bridge
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 30 to 31 60 70 80 900
port link-aggregation group 3


interface Ten-GigabitEthernet2/0/51
port link-mode bridge
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 30 to 31 60 70 80 900
port link-aggregation group 3

2. On Cisco end, I have the following:

interface TenGigabitEthernet1/1/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 30 to 31 60 70 80 900
switchport mode trunk
switchport nonegotiate
channel-protocol lacp
channel-group 2 mode active


interface TenGigabitEthernet2/1/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 30 to 31 60 70 80 900
switchport mode trunk
switchport nonegotiate
channel-protocol lacp
channel-group 2 mode active


interface Port-channel2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 30 to 31 60 70 80 900
switchport mode trunk
switchport nonegotiate

This is production envirement. Now, i need to create a new VLAN and add allow it over the LACP link.

Could you please advice how this should be handled on HP switch?

My steps are as follows:

1. HP end - create new VLAN and SVI

system-view

vlan 700

interface Vlan-interface 700
ip address 10.25.25.1 255.255.255.0

Not sure how to add that VLAN to bridge aggregation? Is there a similar command to Cisco IOS:

SWITCHPORT TRUNK ALLOWED VLAN ADD

Also, does such change have impact on the bridge group itself?

 

2. Cisco end is rather easy for me:

(create new VLAN and add it to the port channel)

config t

vlan 700

INTERFACE Port-channel2
SWITCHPORT TRUNK ALLOWED VLAN ADD 700

Any help is appreciated.

 

Regards,

 

luke

4 REPLIES
Vince-Whirlwind
Honored Contributor

Re: Adding new VLAN to LACP link between HP A5800-48G and Cisco 3750 stack

You seem to be on the right track.

Have you used this to refre to?
http://networktest.com/hpiop/hpiopcookbook.pdf

 

 

HP-Browniee
Respected Contributor

Re: Adding new VLAN to LACP link between HP A5800-48G and Cisco 3750 stack

Hi

If you want to add a vlan to an interface you just have to add it like this:

 port trunk permit vlan 700

It will not overwrite the other vlans, it will simply be added. I dont think this will interrupt the link.

When you are not sure, you can test it on a down link.

 

Kind regards

 

parnassus
Honored Contributor

Re: Adding new VLAN to LACP link between HP A5800-48G and Cisco 3750 stack

Since VLAN(s) and Bridge-Aggregation group have been yet defined, have you tried (port trunk permit vlan as per HP 5820X&5800 Switch Series Layer 2 - LAN Switching Command Reference R18xx manual) something like:

<hpswitch> system-view
[hpswitch] interface bridge-aggregation 3
[hpswitch-Bridge-Aggregation3] port trunk permit vlan 30 31 60 70 80 700 900

or just:

<hpswitch> system-view
[hpswitch] interface bridge-aggregation 3
[hpswitch-Bridge-Aggregation3] port trunk permit vlan 700

remembering that:

    • If you use the port trunk permit vlan command multiple times, the trunk port carries the set of VLANs specified by vlan-list in each execution.
    • The configuration made in Layer 2 aggregate interface view applies to the aggregate interface and its aggregation member ports (your Ten-GigabitEthernet1/0/51 and Ten-GigabitEthernet2/0/51).
forman102
Visitor

Re: Adding new VLAN to LACP link between HP A5800-48G and Cisco 3750 stack

Thank you all for the support. Adding new VLAN to the trunk/LACP agg is as simple as mentioned above:

 

port trunk permit vlan 700

Indeed, the vlan will be added to the existing trunk with no impact on it.

I can also confirm there's no impact on the bridge-agg/port channel. It remains stable...still I'd recommend making change within the maintenance window.

 

Thanks again.

 

luke