The isis metric-delay normalize interval command configures delay and cost normalization on an interface.
The undo isis metric-delay normalize interval command cancels the delay and cost normalization function on an interface.
By default, no delay tolerance is configured on an interface, and the metric value for delay-based path computation is the original value.
isis metric-delay normalize interval interval-value [ offset offset-value ]
isis process-id process-id-value metric-delay normalize interval interval-value [ offset offset-value ]
undo isis metric-delay normalize interval interval-value [ offset offset-value ]
undo isis process-id process-id-value metric-delay normalize interval interval-value [ offset offset-value ]
| Parameter | Description | Value |
|---|---|---|
| offset offset-value |
Specifies the normalized delay offset. |
The value is an integer that ranges from 0 to 16777214. |
| process-id process-id-value |
Specifies the ID of an IS-IS multi-instance process. |
The value is an integer that ranges from 1 to 4294967295. |
| interval interval-value |
Specifies the normalized delay. |
The value is an integer that ranges from 1 to 16777215. |
100GE interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE electrical interface view, GMPLS-UNI interface view, Global VE sub-interface view, Loopback interface view, Tunnel interface view, VBDIF interface view, VE sub-interface view, VE interface view, VLANIF interface view
Usage Scenario
For the delay-based Flex-Algo algorithm, the delay difference of each link is basically different, and the difference may be small. However, even if the difference is small, only one optimal path can be generated according to the existing SPF algorithm. Load balancing cannot be performed within a certain delay tolerance range, and therefore link resources on the network cannot be fully utilized. To solve this problem, the delay on the link is normalized first. The delay of links with a small difference or an acceptable difference is normalized to implement load balancing, making full use of link resources on the network.
Precautions
If delay normalization is configured in both the process view and the interface view, the configuration on the interface view takes effect preferentially. After the interface configuration is canceled, the normalized configuration in the process takes effect.
<HUAWEI> system-view [~HUAWEI] isis 100 [*HUAWEI-isis-100] quit [*HUAWEI] interface GigabitEthernet 0/1/0 [*HUAWEI-GigabitEthernet0/1/0] isis enable 100 [*HUAWEI-GigabitEthernet0/1/0] isis metric-delay normalize interval 100 offset 50