01-24-2013 04:45 AM - edited 03-07-2019 11:17 AM
I have the following config using a Cisco 1921. I am trying to get devices on the the native VLAN to get internet access via the gateway x.x.x.73
Anything being routed from the other Vlans 15/20/30 can get access, but nothing from an internal IP address. Is there something I am missing.
The Xs replace the same 3 octets for each interface.
In addition to this, I am trying to route from VLANs 15/20/30 to see VLAN 5. I have tried a few things, in terms of adding extra ip routes, but can't get anything to work. Each of those Vlans have another router on the other side of them, which I have also tried adding ip routes too, but nothing. One of the routers (Vlan15 is a Draytek 2830).
interface GigabitEthernet0/0description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$
ip address x.x.x.74 255.255.255.252
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/1.1
encapsulation dot1Q 1 native
ip address 192.168.1.1 255.255.255.0
!
interface GigabitEthernet0/1.5
encapsulation dot1Q 5
ip address 192.168.5.1 255.255.255.0
!interface GigabitEthernet0/1.10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
no ip redirects
no ip unreachables
!
interface GigabitEthernet0/1.15
encapsulation dot1Q 15
ip address x.x.x.149 255.255.255.252
no ip redirects
no ip unreachables
!
interface GigabitEthernet0/1.20
encapsulation dot1Q 20
ip address x.x.x.153 255.255.255.248
no ip redirects
no ip unreachables
!
interface GigabitEthernet0/1.30
encapsulation dot1Q 30
ip address x.x.x.169 255.255.255.248
no ip redirects
no ip unreachables
!
ip forward-protocol nd
!
ip route 0.0.0.0 0.0.0.0 x.x.x.73
!
01-24-2013 05:44 AM
Hi,
Anything being routed from the other Vlans 15/20/30 can get access, but nothing from an internal IP address. Is there something I am missing.
What do you mean by that ? you mean they can get to the Internet using this gateway but can't communicate with each other ?
In addition to this, I am trying to route from VLANs 15/20/30 to see VLAN 5. I have tried a few things, in terms of adding extra ip routes, but can't get anything to work
All these Vlans are directly connected and they should communicate with each other without any static routes.
Can you provide the output of show ip route.
Regards.
Alain
Don't forget to rate helpful posts.
01-24-2013 06:25 AM
Hi, Sorry I am not being very clear.
Here is the sh ip route output.
I am trying to gain internet access via the various internal Vlans (1 and 5). All Vlans (besides 10 which I will likely be removing) need access to 5.
The other Vlans 15/20/30 currently connect to 3 other routers (one of which is a Draytek). These all work correctly in that they can connect to the internet, but they also need to connect to Vlan 5, so I assume I need an IP route on those routers as well or should they be able to see Vlan 5 anyway?
edit: I can now see vlan5 going via the draytek router, so this is fine, but still unable to get internet access via either vlan 1 or 5.
S* 0.0.0.0/0 [1/0] via x.x.x.73
x.0.0.0/8 is variably subnetted, 8 subnets, 3 masks
C x.x.x.72/30 is directly connected, GigabitEthernet0/0
L x.x.x.74/32 is directly connected, GigabitEthernet0/0
C x.x.x.148/30 is directly connected, GigabitEthernet0/1.15
L x.x.x.149/32 is directly connected, GigabitEthernet0/1.15
C x.x.x.152/29 is directly connected, GigabitEthernet0/1.20
L x.x.x.153/32 is directly connected, GigabitEthernet0/1.20
C x.x.x.168/29 is directly connected, GigabitEthernet0/1.30
L x.x.x.169/32 is directly connected, GigabitEthernet0/1.30
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, GigabitEthernet0/1.1
L 192.168.1.1/32 is directly connected, GigabitEthernet0/1.1
192.168.5.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.5.0/24 is directly connected, GigabitEthernet0/1.5
L 192.168.5.1/32 is directly connected, GigabitEthernet0/1.5
192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.10.0/24 is directly connected, GigabitEthernet0/1.10
L 192.168.10.1/32 is directly connected, GigabitEthernet0/1.10
Thanks for your help.
Message was edited by: Robert Southgate
01-24-2013 06:40 AM
Hi,
if vlan 15.20.30 are already connected to another router then you must not configure them on this one but you have to configure static routes for these vlans on this router:
ip route x.x.x.148 255.255.255.252 x.x.x.x where x.x.x.x is the IP address of the other router connected to 1921
ip route x.x.x152 255.255.255.248 x.x.x.x
ip route x.x.x.168 255.255.255.248 x.x.x.x
don't forget to remove the ip addresses for these vlans on the 1921
Regards.
Alain
Don't forget to rate helpful posts.
01-24-2013 06:48 AM
Hi,
The Vlans 15/20/30 are all working as they should, so no problem there now, but I am trying to get internet access via x.x.x74 (int 0/0) from the vlans 1/5.
Do i need anything else in the config for that to be enabled?
Thanks
01-24-2013 07:01 AM
Hi,
yes you need NAT:
int g0/0
ip nat out
interace g0/1.1
ip nat in
int g0/1.5
ip nat in
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 1 permit ip 192.168.5.0 0.0.0.255
ip nat inside source list 1 interface g0/0
Regards.
Alain
Don't forget to rate helpful posts.
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: