Cabletron Systems 3F00-01 User Manual page 37

Chapter 4: Monitoring and Managing the 3F00-01 and 3F55-01
• Enabled/Disabled – enabled if it is operational, or disabled if you used
the
disable
operational, its status will be broken. (A port could be broken if it is so
badly misconfigured as to be unusable, or if the port cannot connect to
the logical ring).
• Spanning Tree – the port's Spanning Tree state. The following states
apply to the Spanning Tree protocol:
- Blocking – The port is not currently the designated port to a LAN
and is therefore not forwarding any packets. (This means there is
another route to that LAN and since the Spanning Tree protocol
does not allow simultaneous redundant paths this port is blocked.
If the other route to that LAN goes down, this port would then start
forwarding).
- Listening – The port is listening for other bridges on the network
to determine if it should go to the forwarding or blocking state.
- Learning – The port is listening for other bridges on the network
and making a table of addresses from packets it has received. Once
the port goes to the forwarding state, it can then use the address
information it has learned.
- Forwarding – The port is the designated port for the LAN and is
forwarding packets and sending out bridge protocol packets.
- Broken – The port is not forwarding packets. Reasons include no
cable connected, no link status, the ring is not operational, or an
NMS has disabled the port.
- Disabled – The port is not configured for Spanning Tree.
- Packets Transmitted – number of packets transmitted from the
port. This includes any packets that might have experienced
transmission errors. (The port's statistics are reset whenever the
port is started.)
- Packets Received – number of good packets received through the
port. Packets with reception errors are not included, nor are
packets local to that segment that are hardware filtered. (All ports
automatically filter most local traffic without actually receiving
the packets, so the count may be lower than the LAN's actual
packet count. You can use an NMS to set the
variable to disable a port's automatic filtering.)
FDDI Dual-Attached Intelligent Module User's Guide
command to disable it. If the port is enabled but not
sifFilterLocal
Page 4-3
MIB