Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 1175)

Brocade 6910 Ethernet Access Switch Configuration Guide 1125
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Glossary and Acronyms
D
GVRP
GARP VLAN Registration Protocol. Defines a way for switches to exchange VLAN information in
order to register necessary VLAN members on ports along the Spanning Tree so that VLANs defined
in each switch can work automatically over a Spanning Tree network.
ICMP
Internet Control Message Protocol is a network layer protocol that reports errors in processing IP
packets. ICMP is also used by routers to feed back information about better routing choices.
IEEE 802.1D
Specifies a general method for the operation of MAC bridges, including the Spanning Tree Protocol.
IEEE 802.1Q
VLAN Tagging — Defines Ethernet frame tags which carry VLAN information. It allows switches to
assign endstations to different virtual LANs, and defines a standard way for VLANs to communicate
across switched networks.
IEEE 802.1p
An IEEE standard for providing quality of service (QoS) in Ethernet networks. The standard uses
packet tags that define up to eight traffic classes and allows switches to transmit packets based on
the tagged priority value.
IEEE 802.1s
An IEEE standard for the Multiple Spanning Tree Protocol (MSTP) which provides independent
spanning trees for VLAN groups.
IEEE 802.1w
An IEEE standard for the Rapid Spanning Tree Protocol (RSTP) which reduces the convergence time
for network topology changes to about 10% of that required by the older IEEE 802.1D STP
standard. (Now incorporated in IEEE 802.1D-2004)
IEEE 802.1X
Port Authentication controls access to the switch ports by requiring users to first enter a user ID
and password for authentication.
IEEE 802.3ac
Defines frame extensions for VLAN tagging.
IEEE 802.3x
Defines Ethernet frame start/stop requests and timers used for flow control on full-duplex links.
(Now incorporated in IEEE 802.3-2002)