Dual Core AEA "Can it be done"?

[KCollinson]

Morning All,

Looking to deploy a procurve solution using a handful of 3500yl's as my Edge switch and a 5412zl as my core.

Configing the Procurves will be no problem for VLANing etc...

Can i install another 5412zl as a secondary core in case of a failure?

I am aware only one switch can have the IPs for the VLANs to enable L3 routing (Inter-VLAN)
so how do i get round this?

Or can there only be on core switch on a LAN?
Thanks,
Karl.

[Bruce Campbell_3]

You can use VRRP (for layer 3 redundancy)
and spanning tree (for layer 2 redundancy)
and do this.

Each 3500yl should be dually connected to
both 5412zl's, and spanning tree (I'd
recommend rstp) enabled on everything.

spanning-tree
spanning-tree force-version RSTP-operation

Connect both 5412zl's together, and put
all vlans on that connection.

Create all vlans on both 5412zl's

Turn on vrrp on both 5412zl's

router vrrp

For each vlan, on one 5412zl set...

vlan 10
ip address 129.97.10.1 255.255.255.0
vrrp vrid 10
owner
virtual-ip-address 10.10.10.1 255.255.255.0
priority 255
enable
exit
exit

and on the other, set...

vlan 10
ip address 129.97.10.2 255.255.255.0
vrrp vrid 10
backup
virtual-ip-address 10.10.10.1 255.255.255.0
enable
exit


and review the manuals on spanning tree and
vrrp