MAC Address Assignment

You must understand MAC addresses assignment if you perform one of the following actions:

Each chassis is assigned a base number of MAC addresses with a number reserved for ports and other internal purposes, and the remainder assigned to routable VLANs. The following table identifies the numbers provided by product.

Product

Base assignment

Reserved

Assigned to routable VLANs

5320 Series

1,024

First 256

remaining 768

5420 Series

1,024

First 256

remaining 768

5520 Series

1,024

First 256

remaining 768

5720 Series

1,024

First 256

remaining 768

Virtual MAC Addresses

Virtual MAC addresses are the addresses assigned to VLANs. The system assigns a virtual MAC address to a VLAN when it creates the VLAN. The MAC address for a VLAN IP address is the virtual MAC address assigned to the VLAN.