Switching

Hi,I'm trying to develop a concept to connect two 6500 using DWDM.The connection has to be encryptec so MacSec is the logical choice.As I get it the Supervisor Engine 2T is required. What license is needed ?Do all 10Gbps linecards (X2-DWDM Tranceiver...

Blocking Ports don´t send BPDUs, but they can receive them from designated ports.Blocking ports, can it hold BPDUs? I think that Blocking Ports only receive, analyse and then discard the BPDU.But, what happen if the blocking port receive a better o w...

Hi,My understanding is that one of the requirements for REP to function is that and edge port is configured.From this I have two questions.Question 1.I wish to deploy a ring remotely. Trunks are in place and forwarding as required. I expect that I wi...

Dear all,We are considering to use stacking feature but would like to make sure about the behavior before we go for it.The question is, for example, when we have 6 Cisco switches stacked and DHCP client is used on the stacked switches.What is the MAC...

I was kind of curious on something. I recently changed my ssm static maps to directly specify which multicast source a particular multicast would be coming from. This is coming from a provider outside of my network. IE:ip igmp ssm-map static 40 10...

    I have a Cisco 8510msr that is connected back to back with a 7206vxr across a 155Meg connection.I receive lots of Output drops on the 7206vxr interface facing the atm switch. When I do the following command:-kwdair9#sh atm int atm 1/0Interface AT...

I need help with a NAT problem with a 8100.  I have 3 of these units and one stopped working so I bought a replacement.  I set the new one up exactly like the others.....the only difference being that the new one did not have a NAT tab in the web gui...

Hello everyone,1 day and 2 hours ago I cleared the counters on a SVI on a 6509 running IOS.  Since then the interface has received 1386034 broadcasts (89547 IP multicasts).  I have a few questions about the interface's broadcast counter:1. Is there a...

Hi,           It seems when I manually do a write mem, the crypto key is sent to the SCP server. When the archive is activated automatically with the time-period config, the switch doesn't send the crypto key. Is this by design?Thank you, Pat

I know this is not a 3com support forum, but am hoping that the Cisco GuRu's are watching.  I teach the Cisco Network Academy.  Our IT Staff recently upgraded the network infrastructure and changed our switches to 3com 4800g's (about 2 years ago).I w...