""Lopez, Robert"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > What would cause a vlan interface to be in an "up" "down" state when doing a > "sh int vlanxxx" command?
Blackhole routing. When you have a Layer 3 VLAN interface, and there are no hosts in that VLAN, then the router shuts down the interface (down/down) because there is nothing reachable on that network (preventing packets from entering the network because they have nowhere to go). It's a feature, not a bug ;> See: http://www.cisco.com/warp/public/473/75.html#commonissue I think what you are talking about is that it's in up/down, which I believe I have seen before, but I can't remember the exact reason. What does the 'show logging' display as the reason it went into that state? Are you using a 6509 (CatOS) + MSFC (IOS) or PFC+MSFC SupIOS? Sup1a or Sup2? -dre Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=48528&t=48518 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
