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Webcast-Catalyst9k
New Member

Static MAC in Nexus 5k 4.2(1)

Hello,

Just had a few questions about inputting static mac-addresses on Nexus 5k, due to checkpoint cluster attached in the network w multicast load balancing. Was hoping the behavior to be similar to Catalysts, but got a surprise.

Does any one know of any plans to make the behaviour more IOS like, even though it may disrespect an RFC or two?

Multicast MAC are allowed into one or more interfaces but not class-D directly mapped mac addresses (starting with 01005e).

N5K(config)# mac address-table static 0100.5e53.dffe vlan 520 interface port-channel 215 port-channel 216
ERROR: mac address is an ip multicast mac

Then if I input some giberish multicast mac, to test it out, the CLI doesn't let me remove them! Had to reboot the machine... Does any one know an alternative to that?

N5K(config)# sh run | inc mac
mac address-table static 0100.0000.be01 vlan 910 interface Po215 Po216
mac address-table static 0100.4e53.6ffe vlan 910 interface Po215 Po216
N5K(config)#

N5K(config)# no mac address-table static 0100.0000.be01 vlan 910
ERROR: mac multicast group does not exist
N5K(config)#
N5K(config)# sh run | inc mac
mac address-table static 0100.0000.be01 vlan 910 interface Po215 Po216
mac address-table static 0100.4e53.6ffe vlan 910 interface Po215 Po216
N5K(config)#

I'm running version 4.2(1)N1(1)

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: Static MAC in Nexus 5k 4.2(1)

Hello Gustavo, Dan

Currently addin multicast addresses is not supported - here is an enhancement request for this:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtd22110

But there is a way to add static multicast address using the igmp snooping static-group with the IGMP range (0100.5exx.xxxx), you just need to point it  to the corresponding IP address using following article:

http://technet.microsoft.com/en-us/library/cc957928.aspx

ip igmp snooping

vlan 100

  ip igmp snooping static-group 224.49.31.1 interface port-channel123

HTH,

Alex

3 REPLIES
New Member

Static MAC in Nexus 5k 4.2(1)

Did anyone add the 0100.5exx.xxxx to mac address-table static? If not, anyone have the solution?

Cisco Employee

Re: Static MAC in Nexus 5k 4.2(1)

Hello Gustavo, Dan

Currently addin multicast addresses is not supported - here is an enhancement request for this:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtd22110

But there is a way to add static multicast address using the igmp snooping static-group with the IGMP range (0100.5exx.xxxx), you just need to point it  to the corresponding IP address using following article:

http://technet.microsoft.com/en-us/library/cc957928.aspx

ip igmp snooping

vlan 100

  ip igmp snooping static-group 224.49.31.1 interface port-channel123

HTH,

Alex

New Member

Static MAC in Nexus 5k 4.2(1)

Thanks.

Please Note that For N7K, command as following:

vlan configuration 100

ip igmp snooping static-group 224.49.31.1 interface port-channel123
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