07-15-2008 06:18 AM - edited 03-03-2019 10:43 PM
We are trying to configure a new subinterface g0/0.1725 on both our routers.
This will allow a few devices to use the 192.168.172.x range
I have configured the subinterfaces on the primary and the failover router.
However they are not passing HSRP information.
Router A is connected to switch A
and Router B is connected to switch B.
Switches A and B are trunked together.
We have 2 vlans configured on the switches. Both are passing HSRP information.
Do I need to configure vlan 1720 so the information will pass on the new subnet
we are trying to configure to pass HSRP?
Solved! Go to Solution.
07-15-2008 06:51 AM
You need to go config VTp TRANSPARENT mode to config vlan numbers higher than 1005.
So config term
vtp mode transparent
on both switches.
Also, you subnet masks are wrong, 172.20.255.240 is network address, you should use .241 on router 1 and .242 on router 2, also the stanby address is in another subnet completely, this should be somethting like .243.
Without all this, it wont work.
HTH
LR
07-15-2008 06:33 AM
Hi,
What vlan do you have specified under that subinterface?
Ie. encapsulation dot1q 100
Do you have this vlan enabled on both switches, and allowed across the trunk?
HTH
LR
07-15-2008 06:37 AM
router 1
interface GigabitEthernet0/0.1725
encapsulation dot1Q 1725
ip address 172.20.255.240 255.255.255.248
no snmp trap link-status
standby 4 ip 172.20.255.1
router 2
interface GigabitEthernet0/0.1725
encapsulation dot1Q 1725
ip address 172.20.255.241 255.255.255.248
no snmp trap link-status
standby 4 ip 172.20.255.1
standby 4 preempt
The switches are than configured as basic
trunks allowing all vlans to pass through.
However vlan 1725 is not configured on the switches.
switch(config)#vlan 1725
switch(config-vlan)#exit
% Failed to create VLANs 1725
Extended VLAN(s) not allowed in current VTP mode.
%Failed to commit extended VLAN(s) changes.
07-15-2008 06:51 AM
You need to go config VTp TRANSPARENT mode to config vlan numbers higher than 1005.
So config term
vtp mode transparent
on both switches.
Also, you subnet masks are wrong, 172.20.255.240 is network address, you should use .241 on router 1 and .242 on router 2, also the stanby address is in another subnet completely, this should be somethting like .243.
Without all this, it wont work.
HTH
LR
07-15-2008 07:42 AM
thx on the vtp transparent mode..that was the issue..
the ip's were typos O:-)
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