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route sub interface

Manish Manwal
Level 1
Level 1

we have create three vlan in our network. then we done inter vlan routing through cisco 3850 l3 switch.

we want to sent traffic all of vlan out of our network through router.

all vlan default gatway configured in cisco 3850.

configured link l3 switch to router as trunk.

configured router subinterface with respective vlan gatway network.

but it cant send traffic

it sh that sub interface is administratively down.

 

THANKS
MANISH MANWAL
2 Replies 2

Manish Manwal
Level 1
Level 1

GigabitEthernet0/1.1 10.10.32.2 YES manual administratively down down

THANKS
MANISH MANWAL

Hello


@Manish Manwal wrote:

we have create three vlan in our network. then we done inter vlan routing through cisco 3850 l3 switch.

we want to sent traffic all of vlan out of our network through router.

all vlan default gatway configured in cisco 3850.

configured link l3 switch to router as trunk.

configured router sub-interface with respective vlan gateway network.

but it cant send traffic

it sh that sub interface is administratively down.

 



It seems to have configure the rtr and the switch to perform the same routing -  As you have the switch already doing this then there is no need to create sub-interfaces on the rtr

 

You will only need the switchport connecting to the rtr as an access port and assigned to one the vlans you have already created

 

On the rtrs lan interface assign it an ip address from the same vlan the its switchport is connected to.

 

res

Paul

 

 


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Kind Regards
Paul