Hi Experts:   Will this topology cause performance issue?? We find out tcp out of order retransmission for some client(problemed client change ip address can be fine) For Nexus 7K and Nexus 5K didn't run double-sited vpc will be the reason?? why??   thanks!!       ... View more

Our Switch (3750 & nexus 5000 & nexus 7000) be scan with udp 123 and 161 port open on management interface.   I know it's open for NTP and SNMP. But for our Security policy it's not allowed.   Any body know how to close it ??   Not only acl block but also port close(can not be find out with port scan tool).     thanks. ... View more

My 3750 on Management Server show as below           .1.3.6.1.4.1.9.9.13.1.5.1.3.1034      ==>  1  (NORMAL)         .1.3.6.1.4.1.9.9.13.1.5.1.3.1050      ==>  6  (NOTFUNCTIONING)         .1.3.6.1.4.1.9.9.13.1.5.1.3.2034      ==>  1  (NORMAL)         .1.3.6.1.4.1.9.9.13.1.5.1.3.2049      ==>  1  (NORMAL)   but "show env power all"     all power supply is ok and good.    anyone know the problem??  it will be the hardware problem or software ??     thanks. ... View more

according your experience, A AP can handle how many clients? In my environment, client will be disconnect when client number reach 20. Is it normal? ... View more