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тАО11-03-2009 06:22 PM
тАО11-03-2009 06:22 PM
This is my first experience with a zl switch. I have mutliple vlans with routing enabled. However, only the vlan in the gateway subnet can access the default gateway located on vlan 3 port a2:
Gateway Route
ip route 0.0.0.0/24 10.100.153.10
vlan 3 10.100.153.1
vlan 6 10.100.156.1
Config...
ip routing
...
vlan 3
name "BUILDING-AB"
untagged A5
ip address 10.100.153.1 255.255.255.0
tagged A2
exit
...
vlan 6
name "BUILDING-G"
untagged A3
ip helper-address 10.100.153.10
ip address 10.100.156.1 255.255.255.0
tagged A2,Trk6
exit
...
ip dns server-address 10.100.153.10
ip route 0.0.0.0 0.0.0.0 10.100.153.10
Solved! Go to Solution.
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тАО11-04-2009 02:46 AM
тАО11-04-2009 02:46 AM
Re: 5406zl not routing multiple subnets to default dateway
What is the device that is the default gateway?
The first guess would be that the default gateway does not have a route back for the 10.100.156.0/24 subnet.
Are the hosts on vlan 6 are successfully getting DHCP addresses? If so can you can ping the 10.100.153.1 address from a vlan 6 host?
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тАО11-04-2009 05:30 AM
тАО11-04-2009 05:30 AM
Re: 5406zl not routing multiple subnets to default dateway
The device is a linux firewall/Content filter. Using an 802.1q interface (A2) with ip in each VLAN.
>The first guess would be that the default >gateway does not have a route back for the >10.100.156.0/24 subnet.
It actually has an interface built on the 156 subnet (vlan6). Keep in mind, if I use 10.100.15x.10 (The Linux Box) as the default gateway for clients on any subnet everything works fine. Internet routing is lost when the HP swtich is the gateway and the client is not in the same subnet a the 0.0.0.0/24 route (ie 10.100.153.0). My goal is to use the HP switch as a router to prevent all the local traffic from congesting the linux box and allow it to manage Internet traffic only.
>Are the hosts on vlan 6 are successfully >getting DHCP addresses? If so can you can >ping the 10.100.153.1 address from a vlan 6 >host?
Disregard the dhcp-helper address. I now have an interface for each subnet built on the Linux box. But to answer yes they are getting addresses and yes they can ping each other.
Thanks,
-Jim
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тАО11-04-2009 06:14 AM
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тАО11-04-2009 06:16 AM
тАО11-04-2009 06:16 AM
Re: 5406zl not routing multiple subnets to default dateway
Do you disable the vlan 6 802.1q interface on the firewall when you set the clients to use 10.100.156.1 as their gateway?
One potential issue may be your firewall not liking the fact that it's routing responses out a different interface from which they were received.
For example, a VLAN 6 host pings an internet address, the request will be routed by the HP and come into the vlan 3 interface on the firewall. The firewall would attempt to route the reply through it's vlan 6 interface.
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тАО11-04-2009 05:47 PM
тАО11-04-2009 05:47 PM
Re: 5406zl not routing multiple subnets to default dateway
>Try to use only one interface on your >firewall (only vlan 3 interface) and add a >static route to reach 10.100.156.0/24 >through 10.100.153.1
Yup, that fixed it. Removed the other VLAN interfaces and created routes on the firewall and it works like a top!
Thanks guys.