Re: MLS between 2 Cat5K with RSM [7:51841]
Ken Diliberto wrote: > But... (you knew I was going to say that, didn't you...) > > What if you have 2 Cat5K with dual RSM (each) with on RSM > routing for a > VLAN spanning both switches? > RSM 1 on Cat5K 1 routing for VLAN 25 on Cat5K 1 and 2. The problem with that is that the devices in a specific VLAN are going to be configured to go to a given gateway IP address, and that can only be services by one of the RSMs, so in effect only one RSM can do the routing for a given VLAN. Having said that, you can run HSRP between the two RSMs, so that if one RSM fails, the other will kick in and still route for the VLAN(s). i.e. If you have 10.1.0.0/16 setup in VLAN 2, and you have your clients setup to go to 10.1.0.1 for their gateway, you can only apply that IP (10.1.0.1) to the VLAN 2 interface in one of the RSMs, not both or else you'll get an IP conflict. If you configure interface VLAN 2 on each RSM with 10.1.0.2 and 10.1.0.3 and setup them up for HSRP with a virtual IP of 10.1.0.1, then one of the RSMs will route for that VLAN, and the other will be a redundant backup. I've only run Cat5500s with a single RSM in each, running HSRP, so I can't say 100% for sure, but I think if you have another RSM in each chassis, you could theoretically run HSRP between all four RSMs anyone out there verify this? HTH, Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51877&t=51841 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MLS between 2 Cat5K with RSM [7:51841]
But... (you knew I was going to say that, didn't you...) What if you have 2 Cat5K with dual RSM (each) with on RSM routing for a VLAN spanning both switches? RSM 1 on Cat5K 1 routing for VLAN 25 on Cat5K 1 and 2. >>> "r34rv13wm1rr0r" 08/21/02 11:21AM >>> If I am not mistaken, and forgive me if I am since it has been a while since I worked with a 5k/RSM setup. I believe that you only need to incorporate the MLS IP RP stuff if you are in the "Router on a Stick" configuration meaning if you have a some 72xx or 75xx's out there doing your VLAN routing. Being that your RSM is incorporated into the switch you should do some sh mls xxx on your switch to see that MLS should be running by default, and there is no need to apply that configuration. I know for a fact this is true on the 65xx platform, but I am sure it also applies to 55xx/RSM also. 16 RP addresses would be external routers ONLY. Good Luck, Anthony - Original Message - From: "Ken Diliberto" To: Sent: Wednesday, August 21, 2002 10:50 AM Subject: MLS between 2 Cat5K with RSM [7:51841] > I finished reading a CCO document on configuring MLS on the Cat5K this > morning and one big question (well, at least one) remains: > > If I'm using 2 Cat5K switches with dual RSMs each connected with a > trunk, do I have to identify each RSM as an MLS IP RP to each switch to > MLS between switches? Do I need to identify each VLAN routing interface > as an MLS IP RP? The documentation states you can specify up to 16 RP > addresses but we've got more. > > Thanks. > > Ken Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51861&t=51841 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MLS between 2 Cat5K with RSM [7:51841]
If I am not mistaken, and forgive me if I am since it has been a while since I worked with a 5k/RSM setup. I believe that you only need to incorporate the MLS IP RP stuff if you are in the "Router on a Stick" configuration meaning if you have a some 72xx or 75xx's out there doing your VLAN routing. Being that your RSM is incorporated into the switch you should do some sh mls xxx on your switch to see that MLS should be running by default, and there is no need to apply that configuration. I know for a fact this is true on the 65xx platform, but I am sure it also applies to 55xx/RSM also. 16 RP addresses would be external routers ONLY. Good Luck, Anthony - Original Message - From: "Ken Diliberto" To: Sent: Wednesday, August 21, 2002 10:50 AM Subject: MLS between 2 Cat5K with RSM [7:51841] > I finished reading a CCO document on configuring MLS on the Cat5K this > morning and one big question (well, at least one) remains: > > If I'm using 2 Cat5K switches with dual RSMs each connected with a > trunk, do I have to identify each RSM as an MLS IP RP to each switch to > MLS between switches? Do I need to identify each VLAN routing interface > as an MLS IP RP? The documentation states you can specify up to 16 RP > addresses but we've got more. > > Thanks. > > Ken Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51856&t=51841 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
MLS between 2 Cat5K with RSM [7:51841]
I finished reading a CCO document on configuring MLS on the Cat5K this morning and one big question (well, at least one) remains: If I'm using 2 Cat5K switches with dual RSMs each connected with a trunk, do I have to identify each RSM as an MLS IP RP to each switch to MLS between switches? Do I need to identify each VLAN routing interface as an MLS IP RP? The documentation states you can specify up to 16 RP addresses but we've got more. Thanks. Ken Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=51841&t=51841 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
