11-26-2008 08:54 PM - edited 03-06-2019 02:42 AM
11-26-2008 09:10 PM
A vlan which is used purely for management of network devices.
Therefore, no customer traffic should be on the management vlan, just management traffic.
Michael
11-26-2008 11:38 PM
it's vlan 1 or the default vlan on a switch where ports are all initially assigned
11-27-2008 04:22 AM
As Michael notes, this VLAN exludes customer traffic, or in other words, no "normal" user traffic, would be on this VLAN, only network system traffic.
Examples include: the device's management address, CDP, SNMP, RMON, STP BPDUs (if not per VLAN), etc.
The purpose is for both security and performance. Security might be obvious, as a different VLAN, we limit what traffic can access the network device as a host. For performance, just as with VLANs in general, we limit what broadcasts the network device will see and minimize traffic directed to the device's management port (e.g. multicast w/o snooping).
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