modify hop

Function

The modify hop command modifies the IP address of a hop on an explicit path.

modify hop ip-address1 ip-address2 [ include [ [ loose | strict ] | [ incoming | outgoing ] ] ^* | exclude ]

Parameter	Description	Value
ip-address1 ip-address2	Changes ip-address1 to ip-address2 on an explicit path.	The value is in dotted decimal notation.
include [ [ loose \| strict ] \| [ incoming \| outgoing ] ] ^*	Indicates that the explicit path must pass through the modified node on the explicit path. strict: indicates the strict explicit path. The modified node must be directly connected to the previous node. loose: indicates the loose explicit path. The modified node can be not directly connected to the previous node. incoming: indicates that the ip-address2 is the IP address of an inbound interface of the modified node. outgoing: indicates that the ip-address2 is the IP address of an outbound interface of the modified node.	By default, a node is added to an explicit path in include strict mode.
exclude	Indicates that the LSP set up along an explicit path excludes the modified link or node.	-

Explicit path view

2: Configuration level

Usage Scenario

The following commands are used to adjust nodes on a created explicit path:

The add hop command is used to add a node to the explicit path.
The modify hop command is used to delete a node from the explicit path and replace the node with a specified node.
The delete hop command is used to delete a node from the explicit path.

Prerequisites

A next-hop IP address has been configured using the next hop command.

Follow-up Procedure

Run the display explicit-path command to view information about the explicit path.

Precautions

A node can be modified on an explicit path using the modify hop command only when the following conditions are met:

ip-address2 must not be a next-hop IP address of an existing node on the explicit path.
If an explicit path over which a TE tunnel has been established is modified, the make-before-break mechanism is triggered, and a CR-LSP is reestablished without traffic loss.

# Modify IP address of a node along the explicit path from 10.1.1.9 to 10.2.2.9.

<HUAWEI> system-view
[HUAWEI] explicit-path p1
[HUAWEI-explicit-path-p1] next hop 10.1.1.9
[HUAWEI-explicit-path-p1] modify hop 10.1.1.9 10.2.2.9