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General Operation - HP ProCurve Series 2810 Management And Configuration Manual

Procurve series 2810 switches.
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GVRP
Introduction
Operating Note: When a GVRP-aware port on a switch learns a VID through GVRP from another device, the switch begins
advertising that VID out all of its ports except the port on which the VID was learned.
Core switch with static
VLANs (VID= 1, 2, & 3). Port 2
is a member of VIDs 1, 2, & 3.
1.
Port 2 advertises VIDs 1, 2,
& 3.
Switch 1
GVRP On
2
11.
Port 2 receives
advertisement of VID 3. (Port
2 is already statically
configured for VID 3.)
Figure 3-1. Example of Forwarding Advertisements and Dynamic Joining
3-4

General Operation

When GVRP is enabled on a switch, the VID for any static VLANs configured
on the switch is advertised (using BPDUs—Bridge Protocol Data Units) out
all ports, regardless of whether a port is up or assigned to any particular VLAN.
A GVRP-aware port on another device that receives the advertisements over
a link can dynamically join the advertised VLAN.
A dynamic VLAN (that is, a VLAN learned through GVRP) is tagged on the port
on which it was learned. Also, a GVRP-enabled port can forward an advertise-
ment for a VLAN it learned about from other ports on the same switch (internal
source), but the forwarding port will not itself join that VLAN until an adver-
tisement for that VLAN is received through a link from another device (exter-
nal source) on that specific port
2.
Port 1 receives advertise-
ment of VIDs 1, 2, & 3 AND
becomes a member of VIDs
1, 2, & 3.
3.
Port 3 advertises VIDs 1, 2,
& 3, but port 3 is NOT a
member of VIDs 1, 2, & 3 at
this point.
Switch 2
GVRP On
3
1
9.
Port 3 receives advertise-
ment of VID 3 AND becomes
a member of VID 3. (Still not
a member of VIDs 1 & 2.)
10.
Port 1 advertises VID 3.
4.
Port 4 receives advertise-
ment of VIDs 1, 2, & 3 AND
becomes a member of VIDs
1, 2, & 3.
5.
Port 5 advertises VIDs 1, 2,
& 3, but port 5 is NOT a
member of VIDs 1, 2, & 3 at
this point.
Switch 3
GVRP On
4
5
7.
Port 5 receives advertise-
ment of VID 3 AND becomes
a member of VID 3. (Still not
a member of VIDs 1 & 2.)
8.
Port 4 advertises VID 3.
Port 6 is statically configured
to be a member of VID 3.
Static VLAN con-
figured End Device
(NIC or switch) with
GVRP On
6
6.
Port 6 advertises VID 3.

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