nineheadbird_67
Nov 11, 2009Nimbostratus
multiple subnets within a vlan not allowed?
We have 6900 LTM connected to Cisco router, on cisco end, there are four subnets on interface vlan 299(see below). Tagged interface 299 from cisco to F5 configured as vlan external on F5, and there are four subnets configured(through self-ip) on the F5 corresponding to the four subnets on Cisco router interface.
I was told by
F5 support multiple subnets within same vlan is not allowed, is that true? I didn't get any error when configure self IPs from different subnets to the same vlan. I would appreciate a lot if experts on this list can clarify this.
Here is cisco side config:
interface Vlan299
description Vlan299
ip address 10.79.1.253 255.255.255.0 secondary
ip address 10.79.0.253 255.255.255.0 secondary
ip address 192.168.0.253 255.255.255.0 secondary
ip address 192.168.1.253 255.255.255.0
ip access-group VLAN-299-OUT out
...
standby version 2
standby 127 ip 192.168.1.254
standby 127 ip 10.79.0.254 secondary
standby 127 ip 10.79.1.254 secondary
standby 127 ip 192.168.0.254 secondary
Here is F5 self IP config:
self 10.79.0.248 {
netmask 255.255.255.0
vlan external
allow default
}
self 10.79.1.248 {
netmask 255.255.255.0
vlan external
allow default
}
self 192.168.0.248 {
netmask 255.255.255.0
vlan external
allow default
}
self 192.168.1.248 {
netmask 255.255.255.0
vlan external
allow default
}