H3C S7500E Series Command Manual page 373

Command Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches
Use the undo auto-cost enable command to disable the function.
This function is disabled by default.
The preference of interface cost set by the auto-cost command is lower than that set
by the circuit-cost command. The preference from high to low is: the cost set by the
isis cost command, the global cost set by the circuit cost command, the cost
automatically calculated and the default cost.
When the cost-style is wide or wide-compatible, the cost value of an interface is
calculated by using the following formula:
cost = (reference value/bandwidth)×10.
Related commands: bandwidth-reference, cost-style.
Examples
# Enable interfaces of IS-IS process 1 to calculate interface cost automatically.
<Sysname> system-view
[Sysname] isis
[Sysname-isis-1] auto-cost enable
4.1.3 bandwidth-reference
Syntax
bandwidth-reference value
undo bandwidth-reference
View
IS-IS view
Parameters
value: Bandwidth reference value in Mbps, ranging from 1 to 2147483648.
Description
Use the bandwidth-reference command to set the bandwidth reference value for
calculating link cost.
Use the undo bandwidth-reference command to restore the default.
By default, the reference value is 100 Mbps.
In the case no interface cost is specified in interface view or system view and automatic
cost calculation is enabled:
When the cost style is wide or wide-compatible, IS-IS automatically calculates
the interface cost based on the interface bandwidth, using the formula: interface
Chapter 4 IS-IS Configuration Commands
4-3