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Work has begun on the dissection of the new 'header-type 3' ERSPAN Type-III header. The current release version of Wireshark does not decode this format at all. We currently have the copy of Wireshark in SVN decoding the new header and identifying t...
We had trouble after a brief ISP outage with one of our VPN tunnels not coming back up. All other tunnels came up and configuration was not changed on either end. We spent several hours last night troubleshooting with the connecting company and wit...
The only way I know of to disable DHCP on a specific port would be to use an access list to filter it. Something like the following:ip access-list extended DHCP_FILTER 10 deny udp any eq bootpc any eq bootps 20 permit ip any anyinterface [Printer Int...
Not to worry, there is some ambiguity in the documentation on these. In fact, I have seen what you are talking about on the older IGESM modules. In fact, the newer modules do not allow you to set the access vlan of the internal facing port which is n...
The MAC table is for the entire switch and there will only be one entry per MAC. When a frame is received for an unknown port, that frame is broadcast to all ports except for the port on which the frame was received. It sounds like you were under th...
The 6120s cannot be stacked. You're going to want to configure them in end host configuration mode with vPC uplinks. Brad Hedlund is the best source for information on this.Here is an article on best practices for uplinking UCS:http://bradhedlund.co...
Jon,These switches do have an internal connection, but it is a management access interface only and not for data traffic. This internal connection connects to the management modules in the IBM chassis and typically management traffic is actually rou...
