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тАО05-25-2011 10:53 AM
тАО05-25-2011 10:53 AM
stacking 2 HP Procurve 2910al switches
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тАО05-25-2011 01:35 PM
тАО05-25-2011 01:35 PM
Re: stacking 2 HP Procurve 2910al switches
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тАО05-25-2011 10:35 PM
тАО05-25-2011 10:35 PM
Re: stacking 2 HP Procurve 2910al switches
I assume you are thinking of stacking from a Cisco point of view whereby you have dedicated proprietary cables joining 2 or more switches together. Once the stack is created that allows you to treat it as a single big switch. On the Cisco this would then allow you to configure port 1 on switch 1 and port 1 on switch 2 as an etherchannel that would then connect to either another switch or to a server.
Unfortunately in the HP world that is not possible with the switches you have. You need to move to a Provision based unit (3500, 6200, 6600, 5400zl or 8212zl). With these switches you have an option called Distributed Trunking which would allow you to do what you want with LACP based trunks but only to servers (it doesn't work with connections to other switches). There are also other limitation to do with routing etc.
The other option in the HP world is the A-series gear (what come out of the aquisition of 3Com/H3C). These switches have a feature called IRF which is similar to the Cisco stacking but instead of using proprietary connections they use the standard 10GbE ports to link the "stacked" switches together. You can then create BAGGs (Bridge Aggregation Groups) that can span ports on different switches in the stack.
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тАО05-25-2011 11:53 PM
тАО05-25-2011 11:53 PM
Re: stacking 2 HP Procurve 2910al switches
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тАО05-26-2011 05:08 AM
тАО05-26-2011 05:08 AM
Re: stacking 2 HP Procurve 2910al switches
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тАО05-26-2011 09:35 PM
тАО05-26-2011 09:35 PM
Re: stacking 2 HP Procurve 2910al switches
What are the host OSes on the servers?
These all affect how you configure things. For example if you have HP Lefthand nodes then you wouldn't worry about trunking to the nodes. You would just configure a ALB bond with the NICs, connect it to both switches and let it handle the load balancing of the links. If the hosts were running vmware ESX then you would configure a vswitch with multiple NICs going to both switches and then create a VMKernel port for each NIC in the vSwitch. Each vmk would have its own IP address and then be bound to the iSCSI software HBA. ESX would then multipath and balance the load across the host links (assuming you set it up for Round Robin Access to the iSCSI LUNs).
As for other vendors I'm sure they have their own best practices for configuring this sort of stuff.