Can a switch can have multiple MAC addresses associated with a single port?
A switch can have multiple MAC addresses associated with a single port. This is common when the switch is connected to another switch. Instead, the Ethernet frame is sent to the MAC address of the default gateway, the router.
Do switch ports have MAC addresses?
Like all Ethernet interfaces, every port on a switch has a unique factory-assigned MAC address. As each frame is received on each port, the switching software looks at the source address of the frame and adds that source address to a table of addresses that the switch maintains.
Can a switch have more than one MAC protocol?
You can configure a multi-port unicast MAC address table entry to associate a unicast MAC address with multiple ports, so that packets that match the entry is delivered to multiple destination ports.
Can a device have multiple MAC address?
Yes, it is quite possible for a machine with one MAC address to have two IP addresses on the same (LAN) segment. Additionaly, multiple interface cards (MAC addresses) can have a single IP address also.
How many MAC addresses can a switch learn on one port?
You can have more than one MAC address on a switch port if: You have a switch connected to it. Could be another managed switch (like a Cisco) or an unmanaged switch (like a consumer Netgear or Linksys switch). You have a virtual server host attached to it with multiple virtual machines sharing the NIC.
Are there multiple MAC addresses on a single port?
I’m trying to map our network and I stumbled into this issue where I’m seeing three MAC address connected to a single port. I checked it and it’s not connected to another switch. It’s connected to a Host PC and from the looks of it it’s running both LINUX and WINDOWS. Description . . . . . . . . . . . : Realtek RTL8139C+ Fast Ethernet NIC #2
Is the PC connected directly to the switchport?
05-04-2016 06:13 AM 05-04-2016 06:13 AM Marc’s said that the PC is connected directly to the switchport though so there’s no switch inbetween. 05-24-2016 04:15 PM
How to get MAC address from Core Switch?
ARP table from Core switch shows the mac-address of the device/interface from where it is learned if am not wrong. If you want to get the actual mac-address you need to check the respective access layer where it is connected. Also this would be the mac-address of the Access layer device connected interface.
Are there any MAC addresses in Port G6 / 32?
Here is a example of the show mac- results. on port g6/32, there are 4 mac addresses, all of them are actually phantom macs. they dont have any entry in the arp table. the mac addresses are from Cray Communications and i suppect it has somethinng to do with the old IP phone.