Hi Jon, Thanks for your help.

emilio1973 · ‎06-05-2015

Hi all,

I can't see the standby router. This is the config in main router

FUE_COM_RT01#show standby brief
P indicates configured to preempt.
|
Interface Grp Pri P State Active Standby Virtual IP
Gi0/1.2501 1 100 P Active local unknown 10.5.203.1
Gi0/1.2504 2 100 P Active local unknown 10.5.204.1

FUE_COM_RT01#sh run int gigabitEthernet 0/1.2501
Building configuration...

Current configuration : 306 bytes
!
interface GigabitEthernet0/1.2501
description "Interface LAN Datos"
encapsulation dot1Q 2501 native
ip address 10.5.203.2 255.255.255.0
ip helper-address 10.7.3.97
ip helper-address 10.7.3.110
standby 1 ip 10.5.203.1
standby 1 preempt
no ip route-cache
service-policy input MARCADO_ENTRADA
end

*********************************************************************************************

And backup router:

FUE_COM_RT02#sh run int vlan 2501
Building configuration...

Current configuration : 251 bytes
!
interface Vlan2501
description Conexion ---Lan Datos---
ip address 10.5.203.3 255.255.255.0
ip helper-address 10.7.3.97
ip helper-address 10.7.3.110
standby 1 ip 10.5.203.1
standby 1 priority 95
standby 1 preempt
ip tcp adjust-mss 1452

vlan 2501
name LAN_DATOS

interface FastEthernet1
description "Interface LAN Datos"
switchport mode trunk
no ip address
duplex full
speed 100

And this is the config on switch that connect both routers

FUE_COM_SW01#sh run int Fa1/0/47
Building configuration...

Current configuration : 390 bytes
!
interface FastEthernet1/0/47
description FUE_COM_RT01
switchport access vlan 2501
switchport trunk encapsulation dot1q
switchport trunk native vlan 2501
switchport trunk allowed vlan 2501,2504,2506,2510,2511
switchport mode trunk
speed 100
duplex full
storm-control broadcast level 10.00
spanning-tree portfast
spanning-tree bpduguard enable
service-policy input MARCADO
end

FUE_COM_SW01#sh run int Fa1/0/33
Building configuration...

Current configuration : 274 bytes
!
interface FastEthernet1/0/33
description FUE_COM_RT02
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2501
switchport mode trunk
speed 100
duplex full
storm-control broadcast level 10.00
spanning-tree portfast
service-policy input MARCADO
end

FUE_COM_SW01#

Jon Marshall · ‎06-05-2015

Either -

1) remove the "native" keyword from your "encapsulation dot1q 2501" line on your primary router

or

2) add this to your switch trunk link -

"switchport trunk native vlan 2501"

Jon

emilio1973 · ‎06-05-2015

Hi Jon, Thanks for your help. I think that modify the trunk implies a loss of service for a few seconds. I'll do in other moment. I'll keep you update.

Thanks

HSRP Problem