2
votes
3answers
229 views

How to prevent MAC spoofing?

I want to define in my Cisco switch a whitelist of allowed MAC, but MAC spoofing could allow any host to connect. How can I prevent MAC spoofing?
1
vote
1answer
264 views

Broadcom NetXtreme II GigE Teaming Does Not Use Unique MAC, Causing Collisions

I currently have a new Dell server on my local (inside) network that I have setup to use three of the four nics to create a team. Examples below. NIC_1 - mac: 000000000001 - ip: n/a NIC_2 - mac: ...
1
vote
4answers
828 views

Cisco Switch: trigger mac-address table update

If I run show mac-address-table dynamic I get a bunch of mac addresses on that table. But due to the aging parameter, I don't see the mac addresses of all possible devices on the network that come ...
2
votes
1answer
225 views

Cisco switch:change mac type from dynamic to static in console

How to change mac from static to dynamic in mac-address-table (switch)?I find this official source but still not understand what options I must choose. Something like this: switch(config)# ...
0
votes
2answers
605 views

What is the Cisco iOS (CLI) command to display a WAP's Radio MAC address?

I can't believe I'm unable to find this with teh g00glez or by RTFMing, but does anyone know how to display the MAC address of a Cisco WAP's Radio (wifi connection) from the command line? show ...
3
votes
1answer
828 views

How do I find out which physical port my ethersvi MAC address corresponds to on a Cisco switch?

I'm doing a layer2 network map (my first) and this is the first virtual mac I've encountered. From the mac address table of switch1, I have VLAN 1 6416.8d98.52c0 DYNAMIC Te0/1 and on the ...
6
votes
1answer
2k views

Is bonding mode=5 a solution against MAC flapping?

There is two are interconnected Cisco WS-2950T. By the one GBIC port on first switch connected a first NIC of bonding interface, and by the one GBIC port on second switch connected a second NIC of ...
1
vote
3answers
4k views

Cisco IOS router MAC or IP address filtering

I'm trying to filter a specific device from my network. Either MAC or IP address filtering would do the trick, but I have trouble finding the exact Cisco IOS commands to use. My router is a Cisco 870 ...
2
votes
2answers
442 views

Odd traffic behavior of statically entered mac addresses over cisco 3750 vlans

At my workplace we use cisco switches to a implement a custom traffic delivery mechanism at layer 2. Custom software puts specific destination macs on ethernet frames and vlans segregate the traffic ...