Gvrp application examples – Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual
Page 216
• Learn about VLANs from other Brocade devices and configure those VLANs on the ports that learn
about the VLANs. The device listens for GVRP Protocol Data Units (PDUs) from other devices, and
implements the VLAN configuration information in the PDUs.
• Advertise VLANs configured on the device to other Brocade devices. The device sends GVRP
PDUs advertising its VLANs to other devices. GVRP advertises statically configured VLANs and
VLANs learned from other devices through GVRP.
GVRP enables a Brocade device to dynamically create 802.1Q-compliant VLANs on links with other
devices that are running GVRP. GVRP reduces the chances for errors in VLAN configuration by
automatically providing VLAN ID consistency across the network. You can use GVRP to propagate
VLANs to other GVRP-aware devices automatically, without the need to manually configure the
VLANs on each device. In addition, if the VLAN configuration on a device changes, GVRP
automatically changes the VLAN configurations of the affected devices.
The Brocade implementation of GARP and GVRP is based on the following standards:
• ANSI/IEEE standard 802.1D, 1998 edition
• IEEE standard 802.1Q, 1998 edition; approved December 8, 1998
• IEEE draft P802.1w/D10, March 26, 2001
• IEEE draft P802.1u/D9, November 23, 2000
• IEEE draft P802.1t/D10, November 20, 2000
GVRP application examples
The following figure shows an example of a network that uses GVRP. This section describes various
ways you can use GVRP in a network such as this one.
on page 231 lists the
CLI commands to implement the applications of GVRP described in this section.
FIGURE 39 Example of GVRP
In this example, a core device is attached to three edge devices. Each of the edge devices is attached
to other edge devices or host stations (represented by the clouds).
The effects of GVRP in this network depend on which devices the feature is enabled on, and whether
both learning and advertising are enabled. In this type of network (a core device and edge devices),
you can have the following four combinations:
GVRP application examples
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FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide
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