Hello Tim, With IGMP snooping enabled the multicast traffic is not flooded (which would include the cpu) however there are still instances where the traffic may need to be punted. Can you paste the netdr capture for at least one of those packets? Fabienne TAC ... View more

Hello Don, They can be stack but I would recommend you try to have them run the same image and feature set: http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/data_sheet_c78-531031.html?referring_site=smartnavRD Fabienne TAC ... View more

Hello, Even though the CLI (command line) may be available, BGP is only supported in the enterprise services license level: http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/release/note/OL_23474.html Fabienne TAC ... View more

Hello Alexandre, I have not tested this personally so can't confirm it will work but I did locate an older internal post mentioning it would work. Fabienne TAC ... View more

Hello Flavio, What is the destination MAC of those packets? Fabienne TAC ... View more

Hello, Is the SVI on site B up/down? is g1/0/3 on a 3750 stack? what's its status? Please provide: sho int vlan 8 sho int g1/0/3 sho vlan id 8 Fabienne TAC ... View more

Hello Vivek, What is the TAC case number you are working on? Fabienne TAC ... View more

Hello, Have you attempted to get a sniffer capture of this traffic to see what the packets look like?  Where are you seeing the drops? Can you paste the output? Fabienne TAC ... View more

Hello, I am not aware of any white paper. What device/linecard specifically are you setting this up on? Issue 1) is definitely expected if the traffic rate is high enough so the span traffic will be impacted meaning you will likely drop. Issue 2) should not happen but I would like to check the architecture of the linecard you are working with. Fabienne. TAC ... View more

Here is a good reference link for all port counters: http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015bfd6.shtml Which switch specifically are you looking at? Are you using the show count int x/y? Fabienne TAC ... View more

Hello, Based on the description of your issue this may require live troubleshooting so I would suggest you open a service request with TAC (link on the right). Cheers, Fabienne LAN-Switching TAC ... View more

Hello, Are you seeing the virtual MAC being learned on all ports? The switch only reports what the server is sending us. This would have to be tweaked at the server level. Cheers, Fabienne LAN-Switching TAC ... View more

Hello, Unfortunately this platform is limited to one destination port per session: http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/54sg/configuration/guide/span.html#wp1024649 No workaround on that switch sorry. You could try to use RSPAN and send the traffic over to another switch which allows more than one destination port. Cheers, Fabienne LAN-Switching TAC ... View more

Hello, Did you capture a sniffer trace of this interface while the drops were occurring? This looks like oversubscription. A capture would tell you for sure using the wireshark I/O graph feature. Is qos enabled? Cheers, Fabienne LAN-Switching TAC ... View more

Max, For VSS, please review the following: http://www.cisco.com/en/US/partner/products/ps9336/products_tech_note09186a0080a7c72b.shtml I am not aware of SPA support in sup2T but you may want to check with your Cisco account team. Cheers, Fabienne LAN-Switching TAC ... View more