sub interfaces on cisco 2951 router

[jkay18041]

I am trying to setup sub interfaces on the LAN side of my router and am having issues getting out to the internet. Any suggestions? Here is my config

interface GigabitEthernet0/0
description To_WAN_Switch
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0.1
description Guest_Network
encapsulation dot1Q 501
ip address 2.26.21.134 255.255.255.248
!
interface GigabitEthernet0/1
description InBound_From_Level3
ip address 2.9.15.118 255.255.255.252
ip access-group Block_Stuff in
duplex auto
speed auto

ip route 0.0.0.0 0.0.0.0 2.9.15.117

I've assigned the IP 2.26.21.129 on a laptop and can ping 2.26.21.134 but not 2.9.15.118 or outbound to the internet.

[luis_cordova · Accepted solution]

Hi @jkay18041 

Check this out to start:

-Your Laptop has the correct gateway?

- Have you tried disabling the firewall of the Laptop?

-Do both networks exist in the routing table?

Regards

[jkay18041]

Helps when the fiber is plugged in :)

[balaji.bandi]

Why do you need sub interface if only 1 subinterface you configured on the device, instead you can directly configure the IP address to interface right?

[paul driver]

Hello

The wan switch connection to the router need to be a trunk, The access port on the switch connection to your laptop needs to be in vlan 501, Lastly make sure the acl isnt negating access also?

[jkay18041]

I had forgotten to plug the fiber into the ISP switch after I removed it.

I only have 1 of the sub interfaces configured at the time.

Thanks