display bgp link-state unicast routing-table sr-algorithm flexible-algorithm-definition

Function

The display bgp link-state unicast routing-table sr-algorithm command displays the SR Algorithm attributes of node routes.

The display bgp link-state unicast routing-table flexible-algorithm-definition command displays the FAD attributes of node routes.

Format

display bgp link-state unicast routing-table [ peer { peerIpv4Addr | peerIpv6Addr } { received-routes | advertised-routes } ] prefix { sr-algorithm | flexible-algorithm-definition }

Parameters

Parameter	Description	Value
peerIpv4Addr	Specifies the address of the IPv4 peer to be displayed.	The value is in dotted decimal notation.
peerIpv6Addr	Specifies the address of the IPv6 peer to be displayed.	The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X.
received-routes	Displays BGP-LS routes received from the specified peer.	-
advertised-routes	Displays BGP-LS routes advertised to the specified peer.	-
prefix	Specifies a BGP-LS route prefix.	The BGP-LS route prefix format is complex. To facilitate your query, run the display bgp link-state unicast routing-table command to check all BGP-LS routes, and copy the prefix of the route whose information is to be queried when specifying prefix.

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
bgp	read

Usage Guidelines

Usage Scenario

To check the Flexible Algorithm Definition (FAD) attributes of node routes, run the display bgp link-state unicast routing-table flexible-algorithm-definition command. The FAD attribute is used to define the flexible algorithm to be advertised by an IGP. Routers can use various algorithms to calculate reachability to other nodes or to the prefixes appended to these nodes. These algorithms include metric-based shortest path first (SPF) and various constraint-based SPFs.

To check the SR Algorithm attributes of node routes, run the display bgp link-state unicast routing-table sr-algorithm command.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display FAD attributes and sub-TLVs of node routes.

<HUAWEI> display bgp link-state unicast routing-table  [NODE][ISIS-LEVEL-1][IDENTIFIER0][LOCAL[as100][bgp-ls-identifier10.1.1.1][ospf-area-id0.0.0.0][igp-router-id0000.0000.0001.00]] flexible-algorithm-definition

 Flexible Algorithm Definition Count: 1

 FAD(FlexAlgo/MetricType/CalcType/Priority): <128/0/0/128>
  Exclude-Any EAG: 0x00000002 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  Include-Any EAG: 0x00000080 00000000 00000000 00000000 00000000 00000000 00000000 00000000
  Include-All EAG:
  Flags: 0x00000080

# Display the SR algorithm attributes of node routes.

<HUAWEI> display bgp link-state unicast routing-table [NODE][ISIS-LEVEL-2][IDENTIFIER0][LOCAL[as100][bgp-ls-identifier10.1.1.1][ospf-area-id0.0.0.0][igp-router-id0000.0000.0001.00]] sr-algorithm

 SR Algorithm:
  0, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144

**Table 1** Description of the **display bgp link-state unicast routing-table sr-algorithm flexible-algorithm-definition** command output
Item	Description
Flexible Algorithm Definition Count	FAD count.
Exclude-Any EAG	Flex-Algo, excluding any affinity sub-TLV.
Include-Any EAG	Flex-Algo, including any affinity sub-TLV.
Include-All EAG	Flex-Algo, including all affinity sub-TLVs.
SR Algorithm	Segment Routing algorithm.
FAD(FlexAlgo/MetricType/CalcType/Priority)	Flexible algorithm definition (FlexAlgo/MetricType/CalcType/Priority).
Flags	FAD flag.