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switch CPU MAC addresses
aueddonline
Member Posts: 611 ■■□□□□□□□□
in CCNP
just wanted some clarification on this one.
Are all the CPU MAC addresses that are show as CPU in the 'show mac-address-table' command unique to the switch?
when I do this command on my 3550 it has 48 CPU mac addresses and when I do it on the 2950 it has none but under 'show int vlan 1' it has a MAC address, is this it's sole address?
Are all the CPU MAC addresses that are show as CPU in the 'show mac-address-table' command unique to the switch?
when I do this command on my 3550 it has 48 CPU mac addresses and when I do it on the 2950 it has none but under 'show int vlan 1' it has a MAC address, is this it's sole address?
What's another word for Thesaurus?
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Netwurk
Member Posts: 1,155 ■■■■■□□□□□
Command varies from one model to another and of course your IOS version has an effect too.
Your 48 addresses from your 3550 are one for each port. They are shown as STATIC on most models. You might also see a reference to BIA (burnt in address) on other commands. This also refers to these MACs. -
Optionsaueddonline
Member Posts: 611 ■■□□□□□□□□
Netwurk wrote:Command varies from one model to another and of course your IOS version has an effect too.
Your 48 addresses from your 3550 are one for each port. They are shown as STATIC on most models. You might also see a reference to BIA (burnt in address) on other commands. This also refers to these MACs.
my 3550 only has 24 ports, so is that 2 for each
What's another word for Thesaurus? -
OptionsNetwurk
Member Posts: 1,155 ■■■■■□□□□□
aueddonline wrote:my 3550 only has 24 ports, so is that 2 for each
Good point. There's also some 0100 and 0180 STATIC entries, they're reserved. Don't ask me for what.
Let's see. 24 ports.
Your first STATIC should be the master one for the switch. Do a show int VLAN 1 to confirm this. The next 24 should be your ports. And you may have two more if you have the two GBIC slots. -
Optionsaueddonline
Member Posts: 611 ■■□□□□□□□□
Netwurk wrote:aueddonline wrote:my 3550 only has 24 ports, so is that 2 for each
Good point. There's also some 0100 and 0180 STATIC entries, they're reserved. Don't ask me for what.
Let's see. 24 ports.
Your first STATIC should be the master one for the switch. Do a show int VLAN 1 to confirm this. The next 24 should be your ports. And you may have two more if you have the two GBIC slots.
yeah got a couple of GBIC slots, yeah the first is the primary, the next 24 are ports f0/1-24, next two are the 2 GBIC and then they start on the 0100's
cool, all those make sense now.What's another word for Thesaurus?