Stack Switch question. Please help! Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Networking › Cisco Routers & Switches How-to › Stack Switch question. Please help! This topic has 3 replies, 2 voices, and was last updated 11 years, 6 months ago by lff. Viewing 1 post (of 1 total) Author Posts lffMember Jul 19, 2009 at 10:14 pm #143226 Hi all, I am new on Networking and this forum… I would like to add an extra switch to an existing switch stacks (3x cisco 3750 IOS version 12.2(24)SE2). I read some document on Cisco seem that the new switch must be same IOS version… My new switch is 3750 version 12.2(50)SE2. Is it compatible??? Please advise. Also…if it is compatible, below steps are correct to add the extra switch? 1. add the new switch (power off) 2. connect stack cable to the switch 3. power on the new switch… Please kindly help!!!:bowdown: Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.