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two powerconnect 6248 vlan routing
I'm trying to figure out VLAN/IP routing between 2 powerconnect 6248 switches over a single fiber cross connect.
Switch1 has 3 VLANs(12,13,14) and Switch2 has 3 different VLANs(22,23,24). To eliminate complexity with my question I'm only concerned with routing traffic between VLAN 12 & 22. VLAN 12 has the network 10.0.200.0/24 and VLAN 22 has the network 10.0.201.0/24. Both networks/VLANs(12 & 22) do not have a default gateway because this is a private network where nodes can communicate without having any network hops.
How would I go about configuring routing between these separate VLANs between these two switches? Originally I was going to set an IP address on VLAN 12(10.0.200.1) & 22(10.0.201.1) then setup IP routes, but since I don't have a default gateway on either network would I need to assign a static IP address on the fiber interface port for both switches? Let me know if you need clarification. Any help would be appreciated.
Thanks,
Brent
DELL-Willy M
802 Posts
1
March 9th, 2012 15:00
Once you enable routing for the each switch globally and on each vlan you will need a separate IP network on the ports connecting the 2 Layer 3 switches.
Console(config)# ip routing
These interfaces could have static ip addresses like you mentioned. They would need to have some other class C network of subnet with a /30 mask if you are limited to what IP addresses you have available.
Then you can set up routes to the networks.
Sample:
The following example identifies the next-hop-ip
console(config)#ip route 192.168.10.10 255.255.255.0 192.168.20.1
xtrusion0
4 Posts
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March 13th, 2012 15:00
Willy, thanks for the reply and sorry for the delay in my response.
I later realized that it won't allow me to assign a static IP address to an ethernet interface on the PC62xx. I'm somewhat of a intermediate-advanced user when it comes to switching/routing, but new to VLAN routing. I have a similar setup for testing VLAN routing in a non production environment and I've attached a basic config from either switch to include changes from what I think you are suggesting. On both switches I have a ethernet cable attached to port 24(to simulate a fiber cross connect). I may be in the ballpark with my configuration, but it is not working.
switch1:
switch2:
DELL-Willy M
802 Posts
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March 13th, 2012 18:00
I think I over complicated things for us. So let’s back up just a little.
What we need to do is enable routing on just one switch. You can decide it really does not matter unless you have a certain reason to have one or the other that needs to be the router in your environment.
Then on interface 1/g24 on both switches we need to set up a trunk to allow the vlan traffic to cross over instead of the general.
console(config)# interface ethernet 1/g24
console(config-if)# switchport mode trunk
console(config-if)# switchport trunk allowed vlan add XX, XX (all vlans that are communicating switch to switch)
console(config-if)# end
Then no ip route should be needed. You will keep all the vlans the same on both switches and all the client devices that are connected to a vlan would have the default gateway of the vlan interface IP
xtrusion0
4 Posts
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March 19th, 2012 21:00
Just so I'm following you correctly...
switch1(routing enabled) --
interface vlan 12
name "noc1-priv"
routing
ip address 10.0.200.1 255.255.255.0
exit
interface vlan 22
name "noc2-priv"
routing
ip address 10.0.201.1 255.255.255.0
exit
interface ethernet 1/g24
switchport mode trunk
switchport trunk allowed vlan add 12,22
exit
switch2 --
interface vlan 12
name "noc1-priv"
exit
interface vlan 22
name "noc2-priv"
exit
interface ethernet 1/g24
switchport mode trunk
switchport trunk allowed vlan add 12,22
exit
This configuration change would allow traffic from switch2 vlan22(10.0.201.0) talk to nodes residing on switch1 vlan12(10.0.200.0) and visa versa?
DELL-Willy M
802 Posts
1
March 20th, 2012 10:00
That looks good except you will need to enable routing globally on switch 1, unless that is what you are referring to at the beginning.
console(config)#routing
Then you would set up the individual interfaces for switchport access to a particular vlan.
This way you have one router and a switch. It can be referred to as "Router on a Stick" all the routed traffic will traverse the trunk up and back down to reach another Vlan or Subnet. All traffic inside the same vlan will stay on the switch.
Let us know the results of the set up.
Thanks