modify hop

Function

The modify hop command is used to modify an existing hop in an explicit path.

By default, no node is modified in an explicit path.

Format

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

modify hop ip-address1 to { hop ip-address2 [ exclude | include [ [ strict | loose ] | [ incoming | outgoing ] ] ^* ] | sid label label-value type { adjacency | prefix } }

Parameters

Parameter	Description	Value
ip-address1	Specifies the hop ip address.	The value is in dotted decimal notation.
ip-address2	Specifies the IPv4 address, if configure next hop as strict mode, please specify interface address.	The value is in dotted decimal notation.
exclude	Prevents a CR-LSP set up on an explicit path from passing through a specified link or node.	-
include	Requires a CR-LSP set up on an explicit path to pass through a specified link or node.	-
strict	Indicates the strict explicit path, requiring a specified node to be connected directly to its previous hop.	-
loose	Indicates the loose explicit path, allowing a specified node to be connected indirectly to its previous hop.	-
incoming	Indicates the inbound interface.	-
outgoing	Indicates the outbound interface.	-
to	Specifies a range.	-
sid	SID value.	-
label label-value	Specifies the label value.	The value is an integer ranging from 16 to 1048575.
type	Specifies the type of segment identifier.	-
adjacency	Specifies the Adjacency SID.	-
prefix	Specifies the Prefix SID.	-

Views

Explicit path view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-te	write

Usage Guidelines

Usage Scenario

The modify hop command is used to modify nodes for an explicit path.

Precautions

When you run this command to modify an existing hop in an explicit path, the IP address of another hop that already exists in the explicit path cannot be used.

Binding SID label type cannot be mixed with the IP type. When the IP address is changed to the SID type, the number of hops of the SID type cannot exceed 10. In addition, ensure that the RSVP-TE Tunnel interface on the local device uses the explicit path and cannot be changed to the label type.

Example

# Change a node with the IP address of 10.0.0.125 to another node with the IP address of 10.0.0.200.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] explicit-path p1
[*HUAWEI-explicit-path-p1] next hop 10.0.0.125
[*HUAWEI-explicit-path-p1] modify hop 10.0.0.125 10.0.0.200 exclude

# Change the IP address 10.0.0.125 in the MPLS TE explicit path to the prefix label type whose label value is 123.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] explicit-path p1
[*HUAWEI-explicit-path-p1] modify hop 10.0.0.125 to sid label 123 type prefix