What model BIG-IP? On some models I have had to set the BIG-IP's or the 6500 (can't remember which) to specified speed/duplex and the other side to auto.
I believe it was auto on the BIG-IP and fixed on the 6500. Setting both sides the same did not work. On Wed, Aug 19, 2009 at 10:41 AM, Christopher Greves < christopher.gre...@mindspark.com> wrote: > Scott, > > We've had issues in the past with IOS 6500's auto-negotiating uplink ports > with an LTM into ISL Trunk mode. This only occurred when we had the port on > the LTM configured as a tagged interface. It was easily solved by forcing > the port on the 6500 into dot1q encapsulation. I'm not sure this necessarily > explains why you aren't seeing a link light on the LTM though. I can't > remember what the interface status was on both sides. This does correlate to > why it's working on the 2950's as they don't support ISL and would likely > negotiate into dot1q. > > Chris > > > Christopher Greves | Senior Systems Engineer > One North Lexington Ave, 9th Floor - White Plains, NY 10601 > T 914-826-2067 | C 914.420.8340 | E christopher.gre...@mindspark.com > > Mindspark Interactive Network, Inc. is an IAC company. > > > > -----Original Message----- > From: Scott Spencer [mailto:sc...@dwc-computer.com] > Sent: Wednesday, August 19, 2009 1:13 PM > To: nanog@nanog.org > Subject: F5/Cisco catalyst configuration question > > Trying to link an F5 Local Traffic Manager with a Cisco Catalyst 6500 , > have > matched ports (speed,duplex ect..) but no link light at all on the F5. Does > link with a Cisco 2950 switch in between but I need a direct connection > with > the 6500. > > Any suggestions what to try? > > Best regards, > > Scott Spencer > Data Center Asset Recovery/Remarketing Manager > Duane Whitlow & Co. Inc. > Nationwide Toll Free: 800.977.7473. Direct: 972.865.1395 Fax: > 972.931.3340 > <mailto:sc...@dwc-computer.com> sc...@dwc-computer.com > <http://www.dwc-it.com/> www.dwc-it.com > Cisco/Juniper/F5/Foundry/Brocade/Sun/IBM/Dell/Liebert and more ~ > > > -- -- Darren Bolding -- -- dar...@bolding.org --