Switching

I guess the subject says it all. We just installed two new 6509s with VSS running and on the second switch (standby), there are no MAC addresses. There are servers plugged into the 2nd switch and some of those are a single NIC. So, why on those ports...

Hi,Does anyone know if it possible to put 12 x Cisco TwinGig Adapter and put either 24 x GLC-SX-MM= or 24 x GLC-T=, or any combination of fiber and kopper SFP`s into this one?This model; WS-C3560E-12D -S Best Regards Eivind Lund

I have a single link into the gig eth port of a sup 720 via fiber SFP, and pings going through that link take over 9ms on average (often over 10ms).  In other words, if pinging something that switch directly via the Sup720 gig port, pings take about ...

I have a new Internet Connection (my 6513 will be a Internet Router) using 10GigE connection.  The port is up and linking at 10Gig.  I have my ip and the other 'side's' ip address.  My question is what are the advantages disadvantages to the followin...

I recently had a 2621 router that was hanging up at 100% cpu utilization when large data files were transfered across the network.  I replaced the router with a spare 2621 and the problem went away.  I decided to play around with the problem router t...

Hi,I have eg. 61.1.1.0/26 public ip subnet provided by our ISP with 3 firewalls behind my internet router cisco 2851. My requirement is to priorotize say 3 Mbps bandwith (at any given point of time) out of 8 Mbps to one specific public IP eg. 61.1.1....

Hi all,please see picture attached. This is my topology and I would like to simulate two independent circuits with OSPF routing. Primary routing path should go thru SW1 and in case that SW1 will fail (for example power off) so OSPF should find second...

Hi,I created a mac based acl and applied to ports of  catalysts 3750 but any one not in this ACL below is also working and can get network accessAny idea what the issue is?Extended MAC access list Test    permit 001b.4f6f.0000 0000.0000.ffff any    p...

I have configured an etherchannel between a stack of 2 x3750's and a 6513the channels go up and down.Sometimes it is up and sometimes, one of the interfaces goes down.Anybody have an idea why this is not stable?Here is the log:3750stack#sh log *Mar  ...

HiI've a C3750 config in stack, I guess I reach the maximum number of STP active process since going up to 1999 the switch become crazy and not working.Where can I find the limit on the cisco web site ?Does anybody have the same problem ?Tks---------...

I would like to throttle the bandwidth on my guest wireless vlan.  We use a 6509 at the head end and was wondering if anyone had experience doing this?  I've read some posting saying that using MLS statements is the way to go?  Thanks

I have a problem I have two interface vlan 1 and vlan interface 2 lan 1 intended as an interface vlan can not ping and connect to interface vlan 2 and another to interface Vlan1  ip address 20.20.20.1 255.255.255.0  ip nat inside  ip virtual-reassemb...