ZyXEL Communications IES4005M User Manual page 121

Table 84 RSTP Commands Summary (continued)
COMMAND
rstp timer hellotime <hellotime>
maxage <maxage> fwdelay <forward
delay>
no rstp timer
interface ge-nni <portlist>
exit
rstp
no rstp
rstp pathcost <path-cost>
no rstp pathcost
rstp priority <priority>
no rstp priority
show interface ge-nni <portlist>
rstp
IES4005M User's Guide
DESCRIPTION
Configures the RSTP bridge timer.
hellotime: The time interval (1-10 seconds) between BPDU
(Bridge Protocol Data Units) configuration message generations by
the root switch. If an RSTP-aware device does not get a Hello
BPDU after three Hello Times pass (or the Max Age), the device
assumes that the link to the neighboring bridge is down.
maxage: The maximum time (4-30 seconds) the IES can wait
without receiving a BPDU before attempting to reconfigure.
forward delay: The maximum time (4-30 seconds) the IES waits
before changing states. This delay gives other switches time to
receive information about topology changes before the IES starts
to forward frames. In addition, each port needs time to listen for
conflicting information that would make it return to a blocking
state; otherwise, temporary data loops might result.
maxage > (2 x (hellotime + 1))
maxage < (2 x (fwdelay - 1))
defaults: hellotime: 2, maxage: 20, forward delay: 15
Resets the RSTP bridge timer to the default value.
Configures the specified Gigabit Ethernet uplink ports. You can
specify a single port <1>, all ports <*> or a list of ports <1,2>.
You can also include a range of ports <1-2>.
Leaves the Gigabit Ethernet uplink port configuration.
Enables RSTP on the specified Gigabit Ethernet uplink port.
Disables RSTP on the specified Gigabit Ethernet uplink port.
Configures the Gigabit Ethernet uplink port RSTP path cost in the
spanning tree. A smaller number means a lower path cost. For
paths with the same priority, the switch will select the lower
numbered interface first.
path-cost: 1~65535, default is 4
Resets the Gigabit Ethernet uplink port RSTP pathcost to the
default value.
Configures the Gigabit Ethernet uplink port RSTP priority in the
spanning tree. When a loop occurs and two root ports have the
same cost, the port with higher priority (lower numerical value)
becomes the root port and the other port becomes an alternate
port. For ports with the same priority, the switch will select the
lower numbered interface first.
priority: 0~240 in steps of 16, default is 128
Resets the Gigabit Ethernet uplink port RSTP priority to the default
value.
Displays the RSTP configuration for the specified Gigabit Ethernet
uplink ports. You can specify a single port <1>, all ports <*> or a
list of ports <1,2>. You can also include a range of ports <1-2>.
Chapter 13 Switch Features
M P
C 13
C 13
C 13
C 13
C 13
C 13
C 13
C 13
C 13
C 13
E 13
121