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Re: 2910al-24G to FLex10 active/active configuration

 
bojar682
Occasional Advisor

2910al-24G to FLex10 active/active configuration

Hello,

 

We are currently trying to deploy c7000 chassis with two flex10 modules which connect to the rest of the network via two 2910 switches. There are two ports connected from each switch to each Flex10. One carries untagged VLAN1 as production network and another one tagged VLANs. Switches are connected to each other via 2Gb LACP trunk. At the minute all ports on the switches show as passing traffic. On the Flex10 side of things though only one port from each module is active at any given time. STP is enabled on the switches.

 

Is there are a way to achieve active/active between 2910s and Flex10 modules and if so what is the best method?

Attached screenshots from Virtual Connect.

 

Any input would be welcome.

4 REPLIES 4
Bart_Heungens
Honored Contributor

Re: 2910al-24G to FLex10 active/active configuration

Hi,

 

The 2 cables between switch and VC module must be also in a LACP trunk on switch side...

 

When U see a active-passive link inside VC it is almost always a LACP issue...

 

 

Kr,

Bart

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bojar682
Occasional Advisor

Re: 2910al-24G to FLex10 active/active configuration

Thanks Bart,

 

I will try this today although not sure how enabling LACP would change anything? These two cables carry different traffic. One is untagged VLAN1 second all other VLANs but tagged. They are not aggregated for higher bandwidth. We have that doubled as there are two 2910s but on the Flex side only one NIC remains active :(. Idealy we would have both VLAN1 and Tagged links active on both FLex modules. From what I understand on higher-end models its possible with Distributed Trunking? However 2910 do not support this feature thus question about preffered config.

 

Switch=====Flex10

     ||

Switch=====Flex10

 

Thanks

Bart_Heungens
Honored Contributor

Re: 2910al-24G to FLex10 active/active configuration

Hi,

 

Sorry I assumed you had a SUS Shared Uplink Set created with 2 connections in it... At that moment you need to have LACP on the switch side...

 

Other possibility (is what you have) is that you created on network LAN with 2 connections, 1 on each module...

This is typical behaviour...

If you want active/active, you will need to create 2 network connections for instance LAN1 and LAN2. LAN1 has a connection to bay 1 and LAN2 to bay 2.

What you also need to do afterwards is that you connect LAN1 to LOM1 and LAN2 to LOM2...

 

This way you will get active/active.

 

All details can be found in the Ethernet cookbook from HP, these specific scenario's are well explained in there:`

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01990371/c01990371.pdf

Take a look at scenario's 1.1 and 1.2...

 

 

Kr,

Bart

 

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bojar682
Occasional Advisor

Re: 2910al-24G to FLex10 active/active configuration

Thanks Bart,

Will give a try. (and read the manual...)