0

I can't figure out how to pass one vlan from one switch to an other: Let's say, I have 2 valns: Vlan 1 and Vlan 2

3 cisco switches:

  1. Cisco Catalyst 3560g (central switch)
  2. Cisco SG-300 (with native Vlan 2)
  3. Cisco SG-300 (with native Vlan 1)

They are connected this way: 2 -> 1 <- 3

On switch 3, there is one device connected, that needs to be connected to the Vlan 2. I added Vlan 2 on the port, where that device is connected and on the port, that's connected to the switch 1.

But the device, connected to the Vlan 2 port convigured on the switch 3 still can't ping the devices from Vlan 2, that are connected to the switch 2.


How do I need to configure the related ports for Vlan to start working?

2
  • 1
    The connections between the switches need to be trunks, but traffic from one VLAN to another must be routed with a router or routing configured on a layer-3 switch. – Ron Maupin Mar 19 at 2:06
  • I've checked. All the ports are trunks. Switches: 1 and 2 both have IP addresses configured for VLAN 2. Does the switch 3 have to have IP configured for the VLAN 2 also, or it should work without the IP? Right now, the VLAN 2 on switch 3 is configured without an address. – igoryonya Mar 23 at 7:11
1

It seams you are need to Configure InterVLAN Routing - I believe it can be done with 3560 you have. Try ip routing command - and if possible go to https://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/41860-howto-L3-intervlanrouting.html to get full instruction

0

Trunking VLANs enables each of them to span multiple switches.

You need to configure all four ports between the switches as trunk ports (assuming they're access ports right now). If they already are in trunk mode you need to permit the VLANs 1 & 2 across those trunks.

If you can't sort it out please add the switch configs to your question.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.