GE Multilink ML810 Instruction Manual page 215

CHAPTER 13: RAPID SPANNING TREE PROTOCOL
Example 13-3: RSTP information from a network with multiple switches
ML810(rstp)##show stp ports
RSTP Port Configuration
-------------------------------------------------------------------------------
Port# Type Priority Path Cost State
-------------------------------------------------------------------------------
01 TP(10/100) 128 200000
02 TP(10/100) 128 2000000
03 100MB Fiber 128 200000
04 100MB Fiber 128 200000
MULTILINK ML810 MANAGED EDGE SWITCH – INSTRUCTION MANUAL
Des. Bridge
Forwarding 80:00:00:20:06:30:00:01 00:01
Disabled
Disabled
Disabled
Table 13–1: Path cost as defined in IEEE 802.1d / 802.1w
Port type
10 Mbps
100 Mbps
1 Gbps
10 Gbps
• State: Indicates the STP state of individual ports. Values can be Listening, Learning,
Forwarding, Blocking and Disabled.
• Des. Bridge: This is the port's designated root bridge
• Des. Port: This is the port's designated root port
Another example of the same command, from a larger network with several switches is
shown in Example 13-3. Note the
manager level prompt or from RSTP configuration state as shown in the screen captures
earlier
In this example, ports 9 and 10 have a path cost of 20000 and are the least cost paths.
These ports are connected to other switches and the ports are enabled as forwarding
ports. Ports 6 and 7 are also connected to other switches. From the state column, it
indicates that port 7 is in a standby state as that port is discarding all traffic.
More CLI commands associated with RSTP in the RSTP configuration mode are shown
below. The
forceversion
forceversion <stp|rstp>
The
show-forceversion
show-forceversion
The command displays the values of the timers set for RSTP.
show-timers
show-timers
CONFIGURING RSTP THROUGH THE COMMAND LINE INTERFACE
Des. Port
00:02
00:03
00:04
STP path cost
100
19
4
2
command can be executed from the
show stp ports
command sets the STP or RSTP compatibility mode.
command displays the current forced version.
RSTP path cost
2000000
200000
20000
2000
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