Setup VLAN on 1921 Router issues

[wrizk0001]

Hi All,

i currently have a 1921 router and will have 3 different vlans. When the devices are connected to the 2960SW i cannot route any data? I have setup the VLAN id's on the 2960SW '5,6,7' but cannot even ping the router from the switch. What am i missing here and how can this be properly configured so that all devices connected to the switch can still com with each other ?

interface GigabitEthernet0/0
 no ip address
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
!
interface GigabitEthernet0/1.1
 encapsulation dot1Q 5 native
 ip address 10.0.1.1 255.255.255.0
 ip helper-address 10.0.0.10
!
interface GigabitEthernet0/1.2
 encapsulation dot1Q 6
 ip flow ingress
 ip address 10.0.2.1 255.255.255.0
 ip helper-address 10.0.0.10
!
interface GigabitEthernet0/1.3
 encapsulation dot1Q 7
 ip address 10.0.3.1 255.255.255.0
 ip helper-address 10.0.0.10

ip nat inside source list 100 interface GigabitEthernet0/1 overload
!
ip flow-export version 9
!
!
access-list 100 permit ip host 0.0.0.0 any
access-list 101 permit gre any any
access-list 101 permit ip 10.0.0.0 0.0.0.255 any
access-list 101 remark LAN NETWORK

[Jay Stants]

Looks like your trying to setup essentially a "router on a stick". Your router is performing layer 3 routing between vlans.

This document may help with understanding the config and concepts with how this works

https://learningnetwork.cisco.com/docs/DOC-23481

HTH

Jay

[wrizk0001]

Thanks Jay, Great article.

Now for somthing complex, ill be having 3 internet connections on this router as well. I have installed all the modules in the router (EHWIC-VA-DSL-A)

I want all VLANS to have there own seperate internet connection - But I want all of them to have a fail over.

Internet on vlan 1 goes down, i want it to use vlan 2, if 2 goes down, i want it to use vlan 1. if 3 goes down i want it go to vlan 2 or 1.

[Jay Stants]

wrizk0001  

I've never seen a design as such, In my mind the better methodology is to leverage all 3 in a manor where there is a default route for 1 ISP for all egress traffic then another default route with a higher metric pointing to the 2nd ISP and then again the 3'rd ISP has a default route with a higher metric than the 2'nd isp default route.

Example:

ip route 0.0.0.0 0.0.0.0 x.x.x.x  - Primary Default route pointing towards Next hop ip of ISP1 
ip route 0.0.0.0 0.0.0.0 y.y.y.y 10 - Secondary Default route with higher AD (10) pointing towards Next hop ip of ISP2 
ip route 0.0.0.0 0.0.0.0 z.z.z.z 20 - Tertiary Default route with higher AD (20) pointing towards Next hop ip of ISP3 
!

Take a look at this article and see if it's something that may help in your design

NAT failover with DUAL ISP on a router Configuration Example

[Glenn Martin]

transferred post to appropriate community: Network Infrastructure>Routing