I´ve a "litte" problem.
I´ve got a campus-wide VLAN with only broadcast-traffic in it. Avarage 8MBit/s. But sometimes there are Peaks,..with round about 40 - 50 MBit/s. At the moment when the peaks happen the number of Output-Drops on the Access-Ports increases. On every access-port in the vlan. Broadcast!! I´m talking about 20.000 output-drops per peak. When I put an traffic-generator in the VLAN, I get ca. 80MBit/s+ with only 30 drops in 60 seconds!!(no broadcast!)
Why will the broadcasts be dropped?
Hardware are 4 Cat6509 Sup720/3BXL an WS-X6748-GE-TX Modules. IOS is 12.2(18)SXE1. All ports are at fixed speed and duplex (100/full). No Broadcast Storm Controll or any pollicies. Servers are at fixed speed, too.
Hope one can help me!