You must understand MAC addresses assignment if you perform one of the following actions:
Define static Address Resolution Protocol (ARP) entries for IP addresses in the switch
Use a network analyzer to decode network traffic
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 |
|---|---|---|---|
|
5420 Series |
1,024 |
First 256 |
remaining 768 |
|
5520 Series |
1,024 |
First 256 |
remaining 768 |
|
VSP 4450 Series |
256 |
First 128 |
remaining 128 |
|
VSP 4900 Series, VSP 7200 Series, VSP 7400 Series, VSP 8200 Series, and VSP 8400 Series |
1,024 |
First 256 |
remaining 768 |
|
VSP 8600 Series |
4,096 |
First 1,024 |
remaining 3,072 |
|
XA1400 Series |
1,024 |
First 8 |
remaining 1,016 |
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.