HP 100VG Betriebsanweisung PDF herunterladen (Seite 12)

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Installation

Installing the Module

Installation

For traffic received from the Ethernet/IEEE 802.3 LAN and intended for the

100VG LAN, Demand Priority Protocol is used for network access. The bridge

acts as a standard 100VG LAN port by sending normal-priority requests to the

hub for permission to transmit packets onto the 100VG LAN.

For traffic received from the HP 100VG LAN and intended for the Ethernet/

IEEE802.3 LAN, CSMA/CD (Carrier Sense Multiple Access with Collision

Detection) protocol is used for network access.

Bridge Topology Considerations

You can install more than one bridge in a 100VG LAN that has multiple 100VG

hubs. However, by installing more than one bridge, you run the risk of creating

loops because this module does not support the Spanning Tree Protocol. You

can install more than one bridge successfully in these situations:

■ Bridge Module on Standby. If you want to install another bridge

module to act as a backup of the second, disable the second bridge

through the ASCII console, HP Stack Manager, or HP Interconnect

Manager. Bridging is enabled by default. If you do not disable the other

bridges, you will create loops! If the first bridge fails, use software to

enable the second one.

■ 100VG network connected to separated Ethernet/802.3 networks.

You can use more than one bridge module if you are connecting your

100VG network to two or more Ethernet networks that are not joined by

a bridge, switch, or router.

The bridge module may be installed in any hub on the segment. Disable the

rest of the bridges through software such as the ASCII console.

Number of Addressed Devices

The bridge is a learning bridge and can store up to 512 addresses for each

direction. The 100VG addresses are stored in memory. This memory is also

used for packet filtering from a 100VG LAN to an Ethernet/IEEE 802.3 LAN

and for improving performance.

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HP 100VG Betriebsanweisung Seite 12