Switching

I have a 4506 with SupIV, cat4000-i9s-mz.121-19.EW1.bin.Every few hours (once a day, but not at the same time very day) the 4506 removes all connected interfaces from the routing table, then adds them a few seconds later. Why is it doing this and can...

     So i have been reading about the Nexus line and the benefits of VDCs etc. I understand them for the most part. So my question:Say you have 2 VDCs (not including the default 1) Lets call these VCD 10 and DVC 20.  Do theese VDCs actually route any...

Hi,I have an issue with a 6500 trunk, this unit has a SUP720 and multiple 6148-GE-TX cards. The configuration is a simple one, and has a simple fix. I have VLAN 203 on two ports, one port simply has an end station on it and the other port has a 2851 ...

unable ping vlan interface with policy routing , but able access the resouces (CISCO 3750)interface Vlan3 ip address 10.151.1.1 255.255.255.0 ip policy route-map VAUSthanksMk

HiI am facing some problem with"WS-X6196-RJ-21 "The problem is that some port of the WS-X6196-RJ-21  module is not coming up.It is not giving any error so it is hard to find out the problem.the same RJ21 connector is working fine with some other port...

Hi, May i inquire if dot1q and isl can work on the same network (i.e. switch to switch connection are ISL and my AP to switch connection is Dot1q).Antbody here who have tried this setup. Does it work?Thanks.

I want to enable the DHCP snooping on 4500 switches (SUP6E), is it must to enable the IP source guard or static ip source guard for static ip address in the network?, as I know ip static source guard is not supported on sup6E.Regards

Hi Guru'swondering whether you can help?Is their a Cisco Cli command for specifying the Sampling Rate for Netflow purposes across Cisco Hardware eg 1700, 2800, 2900, 3500, 3600, 3700, 6500, 3120 BS, ASA Firewalls etcEg Sampling Rate as in "1 in 512"T...

Hi,Secondary SUP is facing some Hw problem, had RMA the unit and would like to replace it.But I have few question here:1) Current SUPs and running IOS 12.2.(18)SXD6.2) The RMA unit may running IOS other than 12.2(18)SXD6.When I replace the secondary ...

I am working in a new building where there are a lot of construction and power outages and our 6500 switches reboot unexpectedly. I think the issue is power fluctuations and/or low power input to our switches, but can not proof it to the contracting...

HiWhen adding an ipv6 address onto a pc, how many addresses do they have, is it 2 ? link local, then either unique local, or global address ? orhope someone can helpthanksCarl

Hello all.I'm planning a new LAN in a new office:- Over 80 users- Data LAN + voIP (so i need POE).- I need Layer 3 in a distibution/core: i would like a stack with layer 3.- I want EtherChannels between access layer and distibution/core layer.- Floor...