IronPort Systems 4108GL - Manual (Page 347)

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Port-Based Virtual LANs (VLANs) and GVRP
GVRP
P
o
rt
-Ba
sed V
ir
tual
LANs
(VLANs)
a
n
d
G
V
RP
Displaying the Static and Dynamic VLANs Active on the Switch. The
show vlans command lists all VLANs present in the switch.
Syntax: show vlans
For example, in the following illustration, switch “B” has one static VLAN (the
default VLAN), with GVRP enabled and port 1 configured to
Learn for
Unknown VLANs. Switch “A” has GVRP enabled and has three static VLANs:
the default VLAN, VLAN-222, and VLAN-333. In this scenario, switch B will
dynamically join VLAN-222 and VLAN-333:
The show vlans command lists the dynamic (and static) VLANs in switch “B”
after it has learned and joined VLAN-222 and VLAN-333.
Figure 14-27. Example of Listing Showing Dynamic VLANs
Switch “A”
GVRP enabled.
3 Static VLANs:
– DEFAULT_VLAN
– VLAN-222
– VLAN-333
Switch “B”
GVRP enabled.
1 Static VLANs:
– DEFAULT_VLAN Port 1: Set to
“Learn” Mode
Dynamic VLANs
Learned from
Switch “A”
through Port 1