HP MSR2000/3000/4000 Router Series Layer 2 - LAN Switching Command Reference
Table Of Contents
- Title Page
- Contents
- MAC address table commands
- Port isolation commands
- Spanning tree commands
- active region-configuration
- check region-configuration
- display stp
- display stp abnormal-port
- display stp bpdu-statistics
- display stp down-port
- display stp history
- display stp region-configuration
- display stp root
- display stp tc
- instance
- region-name
- reset stp
- revision-level
- stp bpdu-protection
- stp bridge-diameter
- stp compliance
- stp config-digest-snooping
- stp cost
- stp edged-port
- stp enable
- stp global config-digest-snooping
- stp global enable
- stp global mcheck
- stp loop-protection
- stp max-hops
- stp mcheck
- stp mode
- stp no-agreement-check
- stp pathcost-standard
- stp point-to-point
- stp port priority
- stp port-log
- stp priority
- stp region-configuration
- stp role-restriction
- stp root primary
- stp root secondary
- stp root-protection
- stp tc-protection
- stp tc-protection threshold
- stp tc-restriction
- stp timer forward-delay
- stp timer hello
- stp timer max-age
- stp timer-factor
- stp transmit-limit
- vlan-mapping modulo
- Loop detection commands
- VLAN commands
- LLDP commands
- display lldp local-information
- display lldp neighbor-information
- display lldp statistics
- display lldp status
- display lldp tlv-config
- lldp admin-status
- lldp check-change-interval
- lldp enable
- lldp encapsulation snap
- lldp fast-count
- lldp global enable
- lldp hold-multiplier
- lldp management-address-format string
- lldp max-credit
- lldp mode
- lldp notification med-topology-change enable
- lldp notification remote-change enable
- lldp timer fast-interval
- lldp timer notification-interval
- lldp timer reinit-delay
- lldp timer tx-interval
- lldp tlv-enable
- Support and other resources
- Index
52
Views
System view
Predefined user roles
network-admin
Parameters
factor: Sets the timeout factor in the range of 1 to 20.
Usage guidelines
After the network topology is stabilized, each non-root-bridge device forwards configuration BPDUs to
the surrounding devices at the interval of hello time to determine whether any link is faulty. If a device
does not receive a BPDU from the upstream device within nine times of the hello time, it assumes that the
upstream device has failed and will start a new spanning tree calculation process.
In a stable network, this kind of spanning tree calculation might occur because the upstream device is
busy. You can avoid such unwanted spanning tree calculations by lengthening the timeout interval (by
setting the timeout factor to 4 or more), thus saving network resources. HP recommends that you set the
timeout factor to 5, 6, or 7 for a stable network.
Examples
# Set the timeout factor of the device to 7.
<Sysname> system-view
[Sysname] stp timer-factor 7
Related commands
stp timer hello
stp transmit-limit
Use stp transmit-limit to set the maximum number of BPDUs that the ports can send within each hello
time.
Use undo stp transmit-limit to restore the default.
Syntax
stp transmit-limit limit
undo stp transmit-limit
Default
The maximum transmission rate of all ports is 10. Each port can send up to 10 BPDUs within each hello
time.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
limit: Sets the maximum number of BPDUs the ports can send within each hello time, in the range of 1 to
255.