Configuring Prefix Sids - H3C SR6600 Command Reference Manual

Configuring IS-IS to support MPLS SR
1. Enter system view.
system-view
2. Enter IS-IS view.
isis process-id
3. Enter IS-IS IPv4 unicast address family view.
address-family ipv4
4. Enable MPLS SR.
segment-routing mpls
By default, MPLS SR is disabled.
Configuring OSPF to support MPLS SR
1. Enter system view.
system-view
2. Enter OSPF view.
ospf process-id
3. Enable MPLS SR.
segment-routing mpls
By default, MPLS SR is disabled.

Configuring prefix SIDs

About this task
Configuring a prefix SID in lookback interface view binds the SID with the IP address of the loopback
interface.
To configure a prefix SID, use one of the following methods:
•
Specify an absolute value in the SRGB. The absolute value is used as the prefix SID.
•
Specify an index value. The sum of the index value and the SRGB base value is used as the
prefix SID. The prefix SID must be in the SRGB.
Restrictions and guidelines
To use a prefix SID for a group of SR nodes in anycast scenarios, specify the n-flag-clear
keyword to set the Node-SID flag bit of the prefix SID to 0.
To configure an IS-IS prefix SID, you must enable an IS-IS process on the loopback interface.
A configured OSPF prefix SID takes effect only if the OSPF process enabled on the loopback
interface is the same as the OSPF process associated with the prefix SID.
Configuring an IS-IS prefix SID
1. Enter system view.
system-view
2. Enter loopback interface view.
interface loopback interface-number
3. Configure an IS-IS prefix SID.
isis prefix-sid { absolute absolute-value | index index-value }
[ n-flag-clear ] [ explicit-null ]
By default, no IS-IS prefix SID is configured.
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