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871 and VLAN routing

Hey all,

I have a Cisco 871 router and I have successfully added a second vlan and connected a switch configured with that VLAN. Anyways, my problem is the device in my new VLAN (vlan200) are able to ping/access devices on vlan1. I do not want this to happen. I read somewhere that the 871 routes between VLAN's by default. I wanted to see if anyone could confirm that?

1 Accepted Solution

Accepted Solutions

Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

That is correct, by default cisco routers route between vlans. If you dont want vlan200 to communicate with other vlans then you need to use an access list to block communication between your vlan.

HTH

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3 Replies 3

Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

That is correct, by default cisco routers route between vlans. If you dont want vlan200 to communicate with other vlans then you need to use an access list to block communication between your vlan.

HTH

Thanks Reza. I had configured it on a new Cisco 871 and found they were not communicating between VLAN's so I was a bit stumped when this one did route between. I have configured the access-group and will test tomorrow.

Thanks!

Hi Christie

You can also separate theese VLANs by including them into different VRFs, or one VLAN will stay in global table and for second one you create VRF.

Best Regards Please rate all helpful posts and close solved questions