I see high latency on ping replies to Internet sites - varies between 17ms and 500ms+. T1 vendor has run tests and says everything's fine, where do I start? How can I check the processor usage on my router?
is not a problem with your router, it's normal on the internet and is due to queuing at circuits that may not be under your ISP control.
On the other hand if the delay get accumulated on your ISP circuits, it's his responsability to contain it to reasonable level. Since this in practice involves costly upgrades, ISP may then leave things as they are.
On Cisco routers, you normally can see processor usage by using "show proc cpu" command. However, more likely variable latency is caused by transient congestion on your T-1.
If you do a "show interface", you'll see the load on the interface, both in and out.
If using a Cisco router, you might check that fair-queue is enabled on your T-1 interface. Also ask whether your ISP is using it or FIFO on their side of the link. If they are using FIFO, ask if they would change to fair-queue.
proc usage on the router (cisco 2600) appears ok, 25% or less. All interfaces are using FIFO. I ran ping tests overnight using PRTG and PingPlotter - the traffic spikes significantly during the day (8am-4:30pm) but stays below 50ms during off peak. We don't have a baseline to refer to, but is this normal? thanks again guys.
so, I was apparently looking in the wrong place on the interface stats... bandwidth is maxed out - 2 bound T1's and input is almost constantly pegged at 3Mbps. Now I'll be chasing down those connections that are eating it up. Thanks for your help guys.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...