Extreme Networks ExtremeWare XOS Guide - Page 661

ExtremeWare XOS 11.3 Concepts Guide
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PIM-SM Protocol-Independent Multicast - Sparse mode. PIM-SM is a multicast
protocol that defines a rendezvous point common to both sender and
receiver. Sender and receiver initiate communication at the
rendezvous point, and the flow begins over an optimized path. It is
used when recipients are in a sparse area.
ping Packet Internet Groper. Ping is the ICMP echo message and its reply
that tests network reachability of a device. Ping sends an echo packet
to the specified host, waits for a response, and reports success or
failure and statistics about its operation.
PMBR PIM multicast border router. A PIMBR integrates PIM-DM and PIM-
SM traffic.
PoE Power over Ethernet. The PoE standard (IEEE 802.3af) defines how
power can be provided to network devices over existing Ethernet
connections.
policy files You use policy files in ExtremeWare XOS to specify ACLs and
policies. A policy file is a text file (with a .pol extension) that specifies
a number of conditions to test and actions to take. For ACLs, this
information is applied to incoming traffic at the hardware level.
Policies are more general and can be applied to incoming routing
information; they can be used to rewrite and modify routing
advertisements.
port mirroring Port mirroring configures the switch to copy all traffic associated with
one or more ports to a designated monitor port. A packet bound for or
heading away from the mirrored port is forwarded onto the monitor
port as well. The monitor port can be connected to a network analyzer
or RMON probe for packet analysis. Port mirroring is a method of
monitoring network traffic that a network administrator uses as a
diagnostic tool or debugging feature; it can be managed locally or
remotely.
POST Power On Self Test. On Extreme Networks switches, the POST runs
upon powering-up the device. If the MGMT LED is yellow after the
POST completes, contact your supplier for advice.
primary port In EAPS, a primary port is a port on the master node that is
designated the primary port to the ring.
protected VLAN In STP, protected VLANs are the other (other than the carrier VLAN)
VLANs that are members of the STPD but do not define the scope of
the STPD. Protected VLANs do not transmit or receive STP BPDUs,
but they are affected by STP state changes and inherit the state of the
carrier VLAN. Also known as non-carrier VLANs, they carry the data
traffic.
In EAPS, a protected VLAN is a VLAN that carries data traffic
through an EAPS domain. You must configure one or more protected
VLANs for each EAPS domain. This is also known as a data VLAN.
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