Cabletron Systems 2H253-25R manual Garp Switch Operation, 12 802.1 Port Priority, Management

Overview

1.1.11 GARP Switch Operation

Some or all ports on the switch may be activated to operate under the Generic Attribute Registration Protocol (GARP) applications, GARP VLAN Registration Protocol (GVRP) and/or GARP Multicast Registration Protocol (GMRP).

GARP is a protocol, or set of rules, that outlines a mechanism for propagating the port state and/or user information throughout a bridged LAN to keep track of users and VLANs on the network fabric. MAC bridges and end users alike can take part in the registration and de-registration of GARP attributes such as VLAN and multicast group membership. For more details on how GVRP and GMRP handle frames under GARP, and how to configure the switch ports to take advantage of this operation, refer to the SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local Management User’s Guide.

1.1.12 802.1 Port Priority

The 802.1 port priority is used to assign a default priority to the frames received without priority information in their tag header, map prioritized frames to the appropriate transmit queues, and prioritize frames according to protocol type. The 802.1 port priority is part of the IEEE 802.1D standard.

1.1.13 Management

Management of the 2H253-25R is accomplished using SNMP-compliant management tools for in-band Local Management. Out-of-band Local Management is provided through the RJ45 COM port on the front panel using a VT100 terminal or a VT100 terminal emulator. In-band remote management is possible through any SNMP compliant Network Management Software.

Local Management described in the SmartSwitch Series 2E253, 2H252, 2H253 and 2H258 Local Management User’s Guide provides the ability to manage the 2H253-25R, and optional HSIMs and VHSIMs that support Ethernet. For information about Local Management for optional non-Ethernet HSIMs or VHSIMs, refer to their respective user’s guide.

1.1.14 Switching Options

The 2H253-25R provides 802.1Q switching or SecureFast Switching Virtual Network Services between all of the front panel interfaces including the optional HSIM or VHSIM interface. In the 802.1Q mode (the default mode of operation), the switch functions as an 802.1D switch until VLANs are configured.

IEEE 802.1Q switching and SecureFast switching allow migration to Virtual Network technologies without requiring the replacement of existing equipment.

1-6Introduction