R21xx-HP FlexFabric 11900 Layer 3 IP Routing Configuration Guide

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• Configure a bandwidth reference value for the interface. OSPF computes the cost with this formula:
Interface OSPF cost = Bandwidth reference value (100 Mbps)/Interface bandwidth (Mbps). If the
calculated cost is greater than 65535, the value of 65535 is used. If the calculated cost is less than
1, the value of 1 is used. If no cost or bandwidth reference value is configured for an interface,
OSPF computes the interface cost based on the interface bandwidth and default bandwidth
reference value.
To configure an OSPF cost for an interface:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure an OSPF cost
for the interface.
ospf cost value
By default, the OSPF cost is calculated
according to the interface bandwidth. For
a loopback interface, the OSPF cost is 0
by default.
To configure a bandwidth reference value:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
N/A
3. Configure a bandwidth
reference value.
bandwidth-reference value
The default setting is 100
Mbps.
Configuring the maximum number of ECMP routes
Perform this task to implement load sharing over ECMP routes.
To configure the maximum number of ECMP routes:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter OSPF view.
ospf [ process-id | router-id router-id |
vpn-instance vpn-instance-name ] *
N/A