I've had that happen here when I picked up a LOT of RF on an ethernet cable.
I've also seen it when a device didn't auto negotiate correctly with a Cisco switch (they seem to suck). I now force all of my Cisco switches to a set port speed rather than allowing auto negotiation. Just for kicks, replaces both ends, maybe the cable too. I've also started putting Ferrite beads on a lot of things. That seems to greatly help my ethernet stability. I also saw a port do this after a storm, I tried a different port and it's fine, so port damage from a power event of some kind. Hope that helps, marlon ----- Original Message ----- From: "Bob Moldashel" <lakel...@gbcx.net> To: "WISPA General List" <wireless@wispa.org> Sent: Friday, October 30, 2009 7:14 AM Subject: [WISPA] OT Question.... > Sorry guys. I know its a little OT but I am the RF guy, not the network > guy. But its kind of on topic because its connected to a wireless link. > :-) > > What does this tell everybody??? Its from a Cisco 2960 switch. > > Oct 27 08:12:18.407 EST: %LINEPROTO-5-UPDOWN: Line protocol on Interface > GigabitEthernet0/21, changed state to down > Oct 27 08:12:19.455 EST: %LINK-3-UPDOWN: Interface GigabitEthernet0/21, > changed state to down > Oct 27 13:52:16.606 EST: %LINK-3-UPDOWN: Interface GigabitEthernet0/21, > changed state to up > Oct 27 13:52:18.661 EST: %LINEPROTO-5-UPDOWN: Line protocol on Interface > GigabitEthernet0/21, changed state to up > Oct 27 14:15:10.273 EST: %LINEPROTO-5-UPDOWN: Line protocol on Interface > GigabitEthernet0/21, changed state to down > Oct 27 14:15:11.314 EST: %LINK-3-UPDOWN: Interface GigabitEthernet0/21, > changed state to down > Oct 27 16:26:29.667 EST: %LINK-3-UPDOWN: Interface GigabitEthernet0/21, > changed state to up > > > I know the gig port is going up and down but does it tell you anything > else? > > Tnx. > > -B- > > -B- > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
