Intel 480T, User Manual

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C H A P T E R 5 Virtual LANs (VLANs)
The configuration for Switch A is as follows:
create vlan red
config vlan red tag 10
config vlan red add port 1-2 untagged
enable gvrp
Switch B does not need to be configured with VLAN or tagging
information. Instead, using GVRP, the server connected to Switch
B, and the remainder of the network connected to Switch B provides
Switch B with the information it needs to forward traffic. Switch A
automatically adds port 3 to VLAN
Red because Switch A now
knows that there are other devices on port 3 that need access to
VLAN
Red .
VLANs that are automatically created using GVRP are given names
in the format
gvrp vlan xxxx
where xxxx is the VLANid (in decimal) that is discovered by GVRP.
These VLANs are not permanently stored in nonvolatile storage,
and you cannot add or remove ports from these VLANs.
GVRP assumes that the VLANs for which it carries information
operate using VLAN tags, unless explicitly configured otherwise.
Typically, you must configure any untagged VLANs on the
switches at the edges of the network, and the GVRP protocol is used
across the core of the network to automatically configure other
switches using tagged VLANs. You cannot assign an IP address to
a VLAN learned by way of GVRP.
GVRP and Spanning Tree
*
Domains
Because GVRP-learned VLANs are dynamic, all VLANs created
by GVRP use the system defaults and become members of the
default Spanning Tree
*
Domain (STPD), s0. Because two STPDs
cannot exist on the same physical port, if two GVRP clients attempt
to join two different VLANs that belong to two different STPDs, the
second client is refused. You should configure all potential GVRP
VLANs to be members of the same STPD. This configuration is
done automatically, if you have not configured additional STPDs.
GVRP Commands
Table 24 describes GVRP commands.