04-21-2005 05:38 AM - edited 03-02-2019 10:32 PM
Hello,
Question 1
Does some could explaine me what is the purpose of mac-addresses starting with 3333.0000.xxxx in the following display:
2 of them are used by "Switch", one by "Router",
Why Switch and Router do they need them ?
The STP address used for any vlan is not starting by 3333.0000.
Sup720_JAB#sh mac-address-table sta | inclu 67
* 67 3333.0000.000d static Yes - Fa3/30,Fa3/32,Fa3/33,Fa4/5
* 67 3333.0000.0001 static Yes - Switch
* 67 3333.0000.0016 static Yes - Switch
* 67 000e.39ee.fc00 static No - Router
Sup720_JAB#
On others switches we could have an aonther value than 3333.0000. .
Question 2
Does some know why there is one MAC-address (b.i.a) for all vlan interfaces ?
Sup720_JAB#sh int vlan 1
Vlan1 is up, line protocol is up
Hardware is EtherSVI, address is 000e.39ee.fc00 (bia 000e.39ee.fc00)
.............;
Sup720_JAB#sh int vlan 60
Vlan60 is up, line protocol is up
Hardware is EtherSVI, address is 000e.39ee.fc00 (bia 000e.39ee.fc00)
..................
Sup720_JAB#sh int vlan 67
Vlan67 is up, line protocol is up
Hardware is EtherSVI, address is 000e.39ee.fc00 (bia 000e.39ee.fc00)
...........................
Sup720_JAB#sh ip arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 67.67.67.65 - 000e.39ee.fc00 ARPA Vlan67
Internet 10.2.1.1 0 00e0.1ea7.0c5a ARPA Vlan1
Internet 10.2.2.36 29 0002.b963.0c00 ARPA Vlan1
Internet 10.2.1.65 - 000e.39ee.fc00 ARPA Vlan1
Internet 50.50.50.65 - 000e.39ee.fc00 ARPA Vlan50
Internet 60.60.60.65 - 000e.39ee.fc00 ARPA Vlan60
Internet 60.60.60.137 214 000a.8a1d.6480 ARPA Vlan60
Internet 50.50.50.137 26 000a.8a1d.6480 ARPA Vlan50
Internet 67.67.67.137 214 000a.8a1d.6480 ARPA Vlan67
Internet 10.2.1.253 0 00e0.1e68.4091 ARPA Vlan1
Sup720_JAB#
up720_JAB#sh catalyst6000 chassis-mac-addresses
chassis MAC addresses: 1024 addresses from 000e.39ee.fc00 to 000e.39ee.ffff
Sup720_JAB#
Sup720_JAB#sh spanning-tree vlan 67
VLAN0067
Spanning tree enabled protocol ieee
Root ID Priority 32768
Address 000e.39ee.fc43
This bridge is the root
Regards,
Solved! Go to Solution.
04-21-2005 05:45 AM
The static mac-address you are refering to is programmed in hardware automatically by the
SUP720 software. This is normal behavior. The address is reserved for IPv6 all-nodes multicast.
04-21-2005 05:45 AM
The static mac-address you are refering to is programmed in hardware automatically by the
SUP720 software. This is normal behavior. The address is reserved for IPv6 all-nodes multicast.
04-21-2005 08:19 AM
Hello,
Thank you for this information.
I found a link about this:
http://www.cisco.com/en/US/partner/tech/tk828/technologies_white_paper09186a0080203e90.shtml
white paper about CISCO IOS IPv6 MULTICAST INTRODUCTION
There is a new OUI format for IPv6 Multicast. The leading two Bytes are set to 33-33
Thank you.
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