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тАО09-16-2014 08:52 AM
тАО09-16-2014 08:52 AM
VRRP
Testing 2 x 5406's in a lab with a few VLAN's. VRID's configured for each VLAN.
VLAN 1 Virtual IP = 192.168.1.254
Primary core switch VLAN 1 IP = 192.168.1.254
Backup core switch VLAN 1 IP = 192.168.1.253
DHCP server's scope for VLAN 1 assigns client devices gateway to 192.168.1.254
I've noticed that if a laptop or client workstation is plugged into the backup core switch; it can still reach off site networks despite it's gateway IP being the primary core switch (192.168.1.254)
I wasn't expecting that behaviour as the backup core switch is effectively sitting idle (I thought?)
VRRP config commands on each switch verified that the owner for VLAN 1 is the primary switch.
Is this normal behaviour?
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тАО09-16-2014 06:54 PM
тАО09-16-2014 06:54 PM
Re: VRRP
That's exactly why you want VRRP.
The master "owns" the .254 address and does all the routing. The backup is functioning as a layer2 switch.
It wouldn't be any good if devices patched into the "backup" couldn't reach their default GW, would it?
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тАО09-17-2014 10:05 AM
тАО09-17-2014 10:05 AM
Re: VRRP
I overlooked the fact its L3 redundancy and was thinking of it like an active/standby setup