871W Multi-VLAN. What IOS Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Networking › Cisco Routers & Switches How-to › 871W Multi-VLAN. What IOS This topic has 2 replies, 3 voices, and was last updated 11 years, 4 months ago by Spintry. Viewing 1 post (of 1 total) Author Posts rjtappMember Jul 13, 2009 at 12:17 pm #143084 I have an 871w running (870-ADVSECURITYK9-M) version 12.4(15)T5. I can’t seem to configure separate VLAN’s. That is VLAN 10 and VLAN 20. When I try to add vlan 20 like this: router(vlan)#vlan 20 name Guest-LAN Vlan can not be added. Maximum number of 2 vlan(s) in the database. router(vlan)# Is this the wrong IOS for multiple VLAN’s? If so, what IOS is the correct version to configure multi-VLAN’s. Are there any problems switching from one IOS version to another? Thanks, Rob Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.