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Does anyone know how often WRED calculates the average queue length? I know the general formula for AVG_Q(t) for time=t, with exponential weight=n isAVG_Q(t) = (AVG_Q(t-1) * (1-(1/2^n)) + (CURRENT_Q * 1/2^n)So, for a standard n=9, the formula become...
Sorry to ask the stupid question, but I can't figure this out. I am running a converged LAN supporting about 1500 devices (1000 computers, 500 phones). I am running two 3750G-24TS switches (running 12.2(35)SE2) at Layer 3 as my core. They support a...
Yep. Got that part from reading the multiple pages on the Cisco web site. What the text you quoted does not answer is *how often* the calculation occurs. Right now, I'm banking that the average is recomputed every time a new packet arrives. If th...
Nope -- most Catalyst switches will support a L3 ACL even if the switch is running SMI/IPbase and running at layer 2. It surprised me, too, when I first found it out. I also thought you had to run at Layer 3 in order to have the switch read the IP ...
Absolutely. For the most part, TOS has been deprecated. At Layer 2, it has been replaced with 802.1Q/p Class of Service (CoS) marking. At Layer 3 in a DiffServ environment, the equivalent is the IP Precedence (IPP) field. DiffServ uses the entire...
Great idea! I didn't realize you can run an extended ACL against a DSCP value. Format is:ip access-list extended QoStest permit ip any any dscp ef permit ip any any dscp af41... permit ip any any dscp default permit ip any any Apply that against th...
William, The biggest difference is that GLBP will distribute traffic over multiple routers simultaneously, while HSRP will only push traffic over one active router at a time. If you are running multiple VLANs and are able to group them so that HS...
