Re: B1600 Chassis network question

• Previous message: Fredrik Lundholm: "Re: chip multithreading on ultrasparc iv"
• In reply to: Steph: "Re: B1600 Chassis network question"
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Date: 24 Oct 2004 02:18:16 GMT

Steph <stephanos@lineone.ten> wrote:
> As I understand this then, the two switches do not share the same 'fabric'
> of connections to the blades. i.e. I can have my blades in one IP network
> that is redundant across both switches (using both blade interfaces), or
> have two IP networks (one on each switch) with no redundancy; What I need
> to know is whether or not I can have a switch set up with VLANs of two IP
> networks, and the other switch monitoring it and doing some sort of
> availability checking (e.g. heartbeat, or something) and 'takes over' the
> connections if the first one fails. As you say each blade is connected to
> each switch on each of it's interfaces, I suspect this isn't possible...

Not only CAN you do that (although at the host level, not the switch level),
but you can do even better than that...

Firstly, failover. Simply use IPMP on the host between the ce0 and ce1
interfaces, one of which goes to each switch. So if one switch fails, the
OS will flip over to using the other port.

Secondly, multiple network. Unless I'm mistaken, the ce interfaces on the
blades support 802.1Q VLANs, as do the switches. So you can run multiple
VLANS, with IPMP running on top of each, to give as many redundant
networks to each blade as you want!

  Scott

• Previous message: Fredrik Lundholm: "Re: chip multithreading on ultrasparc iv"
• In reply to: Steph: "Re: B1600 Chassis network question"
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