3Com 3500 - Manual (Page 286)

286 C HAPTER 10: B RIDGE P ORT P ARAMETERS
SRHopLimit
(3500 and 9000 L3) (Not available at this release)
state Current operating state of the port:
■ Blocking — The bridge continues to run STP on the
port, but the bridge does not receive packets from the
port, learn locations of station addresses from it, or
forward packets onto it.
■ Listening — The bridge continues to run STP and
to transmit configuration messages on the port, but it
discards packets that are received on the port and does
not transmit packets that are forwarded to the port.
■ Learning — Similar to listening, but the bridge
receives packets on the port to learn the location of
some of the stations that are located on the port.
■ Forwarding — The bridge receives packets on the
port and forwards or does not forward them,
depending on address comparisons with the bridge’s
source address list. Provided that the link state is up,
this
state field indicates forwarding even if STP is
disabled for the bridge.
■ Disabled — Management has disabled the port or
the link state is down .
stp Configurable status of STP on a port. Provided that
bride-wide STP is enabled, the port STP configuration
states function as follows:
■ enabled — STP sets the operating state of the port
(blocking, listening, etc.) according to network
topology characteristics. This is the default
configuration for all ports.
■ disabled — STP is disabled and the port is disabled.
The port does not participate in STP decisions, frame
reception, or frame transmission.
■ removed — STP is disabled on the port but the port
can still receive or transmit frames if its link state is up.
If bridge-wide STP is disabled, this port STP setting is
meaningless; as long as its link state is up, the port
forwards all frames. To configure STP on a port, see
“bridge port stpState” in this chapter.
txAllFilters
(3500 and 9000 L3) Number of frames that the bridge port discarded because
of a user-defined packet filter on its “transmit all” path.
txBlockedDiscs
(3500 and 9000 L3) Number of frames that this bridge port discarded because
the transmitting bridge port was not in the forwarding
state.
Field Description