On 2013-08-28 17:28, Bastiaan Topper wrote:
Hi Adam,
The problem is that it is not only with VSS switches. The screenshot is off a switch without VSS (so a normal 4500 switch, but with many interfaces). I also have 6500 switches (and even a 6500 VSS), these don't have the problem, but have a lot less interfaces. The 4500 switches don't all run the same IOS version. The VSS switches have 2 version, the not VSS switch has an other supervisor and much older IOS.
Thing I noticed is that the port polling collects all metrics for all interfaces for every interface it polls. For big switches, this is a lott of info each time it polls an interface. If I do a debug it show very long lists of collected metrics (output of all the snmpbulkwalk commands per interface), each time for all interfaces. Could it be that the problem is there somewhere, or am I interpreting the output wrong?
It's not actually all that much information, and 250 ports isn't really a lot.
The issue is almost certainly a bug with counter collection on the 4500.
Cisco doesn't seem to bother giving many shits about bugs on "enterprise" kit, they only seem to fix issues on "service provider" kit.
This just further cements my view that the 4500 is a largely pointless device that people only buy when they've been tricked by Cisco's sales and marketing splurge.
adam.