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
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[Sysname-Ethernet2/1] quit
[Sysname] stp global config-digest-snooping
Related commands
• display stp
• stp global config-digest-snooping
stp cost
Use stp cost to set the path cost of the port or ports.
Use undo stp cost to restore the default.
Syntax
stp [ instance instance-list ] cost cost
undo stp [ instance instance-list ] cost
Default
The device automatically calculates the path costs of ports in each spanning tree based on the
corresponding standard.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
instance instance-list: Sets the path cost of the ports in the MSTIs that are specified by an instance list, in
the format of instance-list = { instance-id [ to instance-id ] }&<1-10>, where &<1-10> indicates that you
can specify up to 10 instances or instance ranges. The value range for the instance-id argument is 0 to
4094, and the value 0 represents the CIST.
cost: Specifies the path cost of the port, with an effective range that depends on the path cost calculation
standard that is adopted.
• When the IEEE 802.1d-1998 standard is selected for path cost calculation, the value range for the
cost argument is 1 to 65535.
• When the IEEE 802.1t standard is selected for path cost calculation, the value range for the cost
argument is 1 to 200000000.
• When the private standard is selected for path cost calculation, the value range for the cost
argument is 1 to 200000.
Usage guidelines
Path cost is an important factor in spanning tree calculation. Setting different path costs for a port in
MSTIs allows VLAN traffic flows to be forwarded along different physical links, which results in
VLAN-based load balancing.
The path cost setting of a port can affect the role selection of the port. When the path cost of a port is
changed, the system calculates the role of the port and initiates a state transition.
When the setting is configured in Layer 2 Ethernet interface view, it takes effect on only that interface.