This is how you would set up a port for VLANs to move across to the Cisco device.  Depending

 

switchport trunk

 

Use the switchport trunk command in Interface Configuration mode to add VLANs to or remove VLANs from a trunk port, or to set the PVID for an interface in Trunk Mode.

 

Syntax

 

switchport trunk { allowed vlan vlan–list | native vlan vlan–id}

 

Examples

 

console# config

console(config)#interface gigabitethernet 1/0/1

console(config-if-Gi1/0/1)#switchport trunk allowed vlan 1-1024

 

console# config

console(config)#interface gigabitethernet 1/0/1

console(config-if-Gi1/0/1)#switchport trunk allowed vlan except 1,2,3,5,7,11,13

 

 

Hope this helps,

 

Can you be more specific on what you are trying to accomplish with the connection between the devices?   Any further information that you can provide will be beneficial.

Hi

I am looking for the best practices on routing a bunch of subnets and their respective VLANs between
two seperate sites over a 10Gb Lan X link.

I have a stack of 7024 switches and a cisco 3750 switch. The 7024 will be my core switch at my datacentre
with multiple subnets/VLANs. The cisco 3750 is my headoffice core switch with multiple subnets/VLANs.
I basically just want traffic from every VLAN to be routable across the 10Gb Lan X link from each side.

Trunking was suggested, but I configured both ends and it does not seem to work.
Perhaps I am missing something.

Current Config that does not seem to work

Cisco
interface vlan 156
ip address 10.10.156.1 255.255.255.252

interface GigabitEthernet1/0/1
 description LAN_X_Uplink_DRCoreSW_sw1_port24
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 156
 switchport mode trunk
!
-------------------------------------------
Dell
vlan database
vlan 10,20,26,28-29,41-42,156
vlan routing 156 10
vlan association subnet 10.10.156.0 255.255.255.252 156
exit
vlan 156
name "LAN_X"
exit
interface vlan 156
ip address 10.10.156.2 255.255.255.252
exit
interface Gi1/0/24
description 'LAN_X_Uplink_CiscoCore_sw1_port1'
switchport trunk allowed vlan 156
switchport mode trunk
exit

Please let me know if more information is needed.

Thanks!

Looks like you do not have routing enabled globally

console(config)# ip routing

Also,  if you are wanting all VLANs to move across to the 3750 you will need to add all the vlans to the trunk.  Your current configuration is only allowing vlan 156.

console(config-if-Gi1/0/24)#switchport trunk allowed vlan 10,20,26,28-29,41-42,156  or all

You will also want the same native vlan set up on both the 7024 and the 3750.

console(config-if-Gi1/0/24)#switchport trunk native vlan xx

You may also need to go into each vlan or range and set routing.  I only see 10, 156 have vlan routing enabled.

console(config)# interface vlan 200

console(config-if-vlan200)# ip address 172.16.200.1 /24

console(config-if-vlan200)# routing

I would also recommend updating the firmware on the switch.  Here is a link to the current firmware version 4.2.2.3a10

www.dell.com/.../powerconnect-7048

Hope this helps

Keep us updated if you can.

Sorry i forgot to mention that i already had ip routing configured.  I also followed what you mentioned and it still does not work.  I upgraded the firmware on both switches to

Images currently available on Flash

unit  image1       image2       current-active     next-active

----- ------------ ------------ ----------------- -----------------

1     4.2.0.4      4.2.2.3      image2             image2

2     4.2.0.4      4.2.2.3      image2             image2

Let's take a look at your routing table.  Can you provide the output of this command?

console# show ip route

It sounds like you may need a route to the 3750.

console(config)#ip default-gateway 10.1.1.1  (this would be the address of the 3750)

You will also need to check the routing table of the 3750 and verify that it has a path back to the 7024.