Segment routing display commands

SR Linux supports display commands to provide operational information about segment routing, including the following:

  • SID database
  • label block information
  • tunnel-table entries

Displaying the SID database

Use the info from state command to display information about the SID database.

Display the global SID database

--{ candidate shared default }--[ ]--
# info with-context from state network-instance default segment-routing mpls sid-database
    network-instance default {
        segment-routing {
            mpls {
                sid-database {
                    prefix-sid 10.20.1.1/32 sid-label-value 3010 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 10.20.1.2/32 sid-label-value 3020 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 10.20.1.3/32 sid-label-value 3030 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 10.20.1.4/32 sid-label-value 3040 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 10.20.1.5/32 sid-label-value 3050 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 10.20.1.6/32 sid-label-value 3060 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 2001:db8:20:1::1/128 sid-label-value 3610 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 2001:db8:20:1::2/128 sid-label-value 3620 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 2001:db8:20:1::3/128 sid-label-value 3630 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 2001:db8:20:1::4/128 sid-label-value 3640 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 2001:db8:20:1::5/128 sid-label-value 3650 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                    prefix-sid 2001:db8:20:1::6/128 sid-label-value 3660 protocol isis protocol-instance 0 protocol-multi-topology 0 algorithm 0 {
                        active true
                    }
                }
            }
        }
    }

Display the IS-IS prefix SID database

--{ candidate shared default }--[ ]--
# info with-context from state network-instance default protocols isis instance default segment-routing mpls sid-database
    network-instance default {
        protocols {
            isis {
                instance default {
                    segment-routing {
                        mpls {
                            sid-database {
                                prefix-sid 10.20.1.1/32 sid-label-value 41000 multi-topology-id 0 algorithm 0 {
                                    active false
                                    prefix-conflict false
                                    sid-conflict false
                                    sid-out-of-range false
                                    source-router 0100.2000.1001 level-number 1 {
                                        local-system false
                                        flags {
                                            re-advertised false
                                            node-sid true
                                            penultimate-hop-popping true
                                            explicit-null false
                                            local false
                                        }
                                    }
                                    source-router 0100.2000.1001 level-number 2 {
                                        local-system false
                                        flags {
                                            re-advertised false
                                            node-sid true
                                            penultimate-hop-popping true
                                            explicit-null false
                                            local false
                                        }
                                    }
                                    source-router 0100.2000.1002 level-number 2 {
                                        local-system false
                                        flags {
                                            re-advertised true
                                            node-sid true
                                            penultimate-hop-popping true
                                            explicit-null false
                                            local false
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }

Displaying label block information

Use the info from state command to display information about the configured label blocks.

--{ * candidate shared default }--[  ]--
# info with-context from state system mpls label-ranges
    system {
        mpls {
            label-ranges {
                static {
                    name srgb-range-1
                    start-label 16001
                    end-label 16999
                    allocated-labels 10
                    free-labels 989
                    status ready
                    }
                }
            }
        }
    }

Displaying tunnel table entries

Use the show network-instance default tunnel-table command to display information about segment routing tunnel table entries. You can adjust the output of the report to filter by address type, encapsulation type, tunnel type, and destination prefix.

Show all tunnel-table entries

--{ running }--[  ]--
# show network-instance default tunnel-table all
------------------------------------------------------------------------------------------------------
IPv4 tunnel table of network-instance "default"
------------------------------------------------------------------------------------------------------
+------------+------+-------+------+-----+-----+---------+-------------+-----------+-----------------+
|IPv4 Prefix |Encaps|Tunnel |Tunnel|FIB|Metric|Preference| Last Update | Next-hop  |    Next-hop     |
|            |Type  |Type   |ID    |   |      |          |             | (Type)    |                 |
+============+======+=======+======+===+=======+=========+=============+===========+=================+
|10.20.1.1/32| mpls |sr-isis|13010 | Y |  10  | 11       | 2021-11-10T | 10.10.1.1 | ethernet-1/33.1 |
|            |      |       |      |   |      |          |14:17:32.202Z| (mpls)    |                 |
|10.20.1.3/32| mpls |sr-isis|13030 | Y |  10  | 11       | 2021-11-10T | 10.10.3.3 | ethernet-1/34.1 |
|            |      |       |      |   |      |          |14:18:02.299Z| (mpls)    |                 |
|10.20.1.4/32| mpls |sr-isis|13040 | Y |  10  | 11       | 2021-11-10T | 10.10.4.4 | ethernet-1/8.1  |
|            |      |       |      |   |      |          |14:18:26.729Z| (mpls)    |                 |
|10.20.1.5/32| mpls |sr-isis|13050 | Y |  10  | 11       | 2021-11-10T | 10.10.23.5| ethernet-1/9.1  |
|            |      |       |      |   |      |          |14:19:02.343Z| (mpls)    |                 |
|10.20.1.6/32| mpls |sr-isis|13060 | Y |  10  | 11       | 2021-11-10T | 10.10.14.6| ethernet-1/11.1 |
|            |      |       |      |   |      |          |14:19:38.140Z| (mpls)    |                 |
+------------+------+-------+------+---+------+----------+-------------+-----------+-----------------+
------------------------------------------------------------------------------------------------------
5 SR-ISIS tunnels, 5 active, 0 inactive
------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------
IPv6 tunnel table of network-instance "default"
------------------------------------------------------------------------------------------------------
+------------+------+-------+------+---+------+-----+-------------+------------------+---------------+
|IPv6 Prefix |Encaps|Tunnel |Tunnel|FIB|Metric|Prefe| Last Update |     Next-hop     |   Next-hop    |
|            |Type  |Type   |ID    |   |      |rence|             |     (Type)       |               |
+============+======+=======+======+===+======+=====+=============+==================+===============+
|2001:db8:20:| mpls |sr-isis|13610 | Y | 10   | 11  |2021-11-10T  |fe80::201:        |ethernet-1/33.1|
|1::1/128    |      |       |      |   |      |     |14:17:32.204Z|1ff:feff:20(mpls) |               |
|2001:db8:20:| mpls |sr-isis|13630 | Y | 10   | 11  |2021-11-10T  |fe80::201:        |ethernet-1/34.1|
|1::3/128    |      |       |      |   |      |     |14:18:03.316Z|3ff:feff:21(mpls) |               |
|2001:db8:20:| mpls |sr-isis|13640 | Y | 10   | 11  |2021-11-10T  |fe80::201:        |ethernet-1/8.1 |
|1::4/128    |      |       |      |   |      |     |14:18:31.638Z|4ff:feff:20(mpls) |               |
|2001:db8:20:| mpls |sr-isis|13650 | Y | 10   | 11  |2021-11-10T  |fe80::201:        |ethernet-1/9.1 |
|1::5/128    |      |       |      |   |      |     |14:19:04.882Z|5ff:feff:20(mpls) |               |
|2001:db8:20:| mpls |sr-isis|13660 | Y | 10   | 11  |2021-11-10T  |fe80::201:        |ethernet-1/11.1|
|1::6/128    |      |       |      |   |      |     |14:19:43.545Z|6ff:feff:4(mpls)  |               |
+------------+------+-------+------+---+------+-----+-------------+------------------+---------------+
------------------------------------------------------------------------------------------------------
5 SR-ISIS tunnels, 5 active, 0 inactive
------------------------------------------------------------------------------------------------------
--{  running }--[  ]--

Show IPv4 tunnel-table entries

--{ running }--[  ]--
# show network-instance default tunnel-table ipv4
------------------------------------------------------------------------------------------------------
IPv4 tunnel table of network-instance "default"
------------------------------------------------------------------------------------------------------
+------------+------+-------+------+---+------+----------+-------------+-----------+-----------------+
|IPv4 Prefix |Encaps|Tunnel |Tunnel|FIB|Metric|Preference| Last Update | Next-hop  |    Next-hop     |
|            |Type  |Type   |ID    |   |      |          |             | (Type)    |                 |
+============+======+=======+======+===+======+==========+=============+===========+=================+
|10.20.1.1/32| mpls |sr-isis|13010 | Y | 10   | 11       | 2021-11-10T | 10.10.1.1 | ethernet-1/33.1 |
|            |      |       |      |   |      |          |14:17:32.202Z| (mpls)    |                 |
|10.20.1.3/32| mpls |sr-isis|13030 | Y | 10   | 11       | 2021-11-10T | 10.10.3.3 | ethernet-1/34.1 |
|            |      |       |      |   |      |          |14:18:02.299Z| (mpls)    |                 |
|10.20.1.4/32| mpls |sr-isis|13040 | Y | 10   | 11       | 2021-11-10T | 10.10.4.4 | ethernet-1/8.1  |
|            |      |       |      |   |      |          |14:18:26.729Z| (mpls)    |                 |
|10.20.1.5/32| mpls |sr-isis|13050 | Y | 10   | 11       | 2021-11-10T | 10.10.23.5| ethernet-1/9.1  |
|            |      |       |      |   |      |          |14:19:02.343Z| (mpls)    |                 |
|10.20.1.6/32| mpls |sr-isis|13060 | Y | 10   | 11       | 2021-11-10T | 10.10.14.6| ethernet-1/11.1 |
|            |      |       |      |   |      |          |14:19:38.140Z| (mpls)    |                 |
+------------+------+-------+------+---+------+----------+-------------+-----------+-----------------+
------------------------------------------------------------------------------------------------------
5 SR-ISIS tunnels, 5 active, 0 inactive
------------------------------------------------------------------------------------------------------

Show IPv6 tunnel-table entries

--{ running }--[  ]--
# show network-instance default tunnel-table ipv6
----------------------------------------------------------------------------------------------------
IPv6 tunnel table of network-instance "default"
----------------------------------------------------------------------------------------------------
+------------+------+-------+------+---+------+-----+-------------+-----------------+---------------+
|IPv6 Prefix |Encaps|Tunnel |Tunnel|FIB|Metric|Prefe|Last Update  |    Next-hop     |   Next-hop    |
|            |Type  |Type   |ID    |   |      |rence|             |    (Type)       |               |
+===================+=======+======+===+======+=====+=============+=================+===============+
|2001:db8:20:|mpls  |sr-isis|13610 | Y | 10   | 11  |2021-11-10T  |fe80::201:       |ethernet-1/33.1|
|1::1/128    |      |       |      |   |      |     |14:17:32.202Z|1ff:feff:20(mpls)|               |
|2001:db8:20:|mpls  |sr-isis|13630 | Y | 10   | 11  |2021-11-10T  |fe80::201:       |ethernet-1/34.1|
|1::3/128    |      |       |      |   |      |     |14:18:02.299Z|3ff:feff:21(mpls)|               |
|2001:db8:20:|mpls  |sr-isis|13640 | Y | 10   | 11  |2021-11-10T  |fe80::201:       |ethernet-1/8.1 |
|1::4/128    |      |       |      |   |      |     |             |4ff:feff:20(mpls)|               |
|2001:db8:20:|mpls  |sr-isis|13650 | Y | 10   | 11  |2021-11-10T  |fe80::201:       |ethernet-1/9.1 |
|1::5/128    |      |       |      |   |      |     |             |5ff:feff:20(mpls)|               |
|2001:db8:20:|mpls  |sr-isis|13660 | Y | 10   | 11  |2021-11-10T  |fe80::201:       |ethernet-1/11.1|
|1::6/128    |      |       |      |   |      |     |             | 6ff:feff:4(mpls)|               |
+------------+------+-------+------+---+------+-----+-------------+-----------------+---------------+
-----------------------------------------------------------------------------------------------------
5 SR-ISIS tunnels, 5 active, 0 inactive
-----------------------------------------------------------------------------------------------------

Show IPv4 tunnel-table entries by destination prefix

--{ running }--[  ]--
# show network-instance default tunnel-table ipv4 10.20.1.6/32 type sr-isis detail
-----------------------------------------------------------------------------------------------------
Show report for network instance "default" tunnel table
-----------------------------------------------------------------------------------------------------
=====================================================================================================
Destination        : 10.20.1.6/32
Encapsulation      : mpls
Tunnel Type        : sr-isis
Metric             : 10
Preference         : 11
Last Update        : 2021-11-10T14:19:38.140Z
FIB Status         : active
Next-hops
  10.10.14.6 (mpls) via [ethernet-1/11.1]
      pushed MPLS labels : [53060]
====================================================================================================

Show IPv6 tunnel-table entries by destination prefix

# show network-instance default tunnel-table ipv6 2001:db8:10:20:1::6/128 detail

----------------------------------------------------------------------------------------------------
Show report for network instance "default" tunnel table
----------------------------------------------------------------------------------------------------
====================================================================================================
Destination        : 2001:db8:10:20:1::6/128
Encapsulation      : mpls
Tunnel Type        : sr-isis
Metric             : 10
Preference         : 11
Last Update        : 2021-11-10T14:19:43.545Z
FIB Status         : active
Next-hops
  2001:db8:201:6ff:feff:4 (mpls) via [ethernet-1/11.1]
      pushed MPLS labels : [53660]
===================================================================================================

Configuring LSP statistics for shared prefix SIDs

LSP statistics collection for shared prefix SIDs requires allocation of flexible counter bank resources. For more information, see "Flexible counter bank allocation" in the SR Linux Configuration Basics Guide.

Prefix SIDs at the network instance level are shared by multiple IGPs (currently only IS‑IS). To obtain per-label statistics for shared prefix SIDs, you must enable their collection.

To enable the collection of per-label statistics for shared prefix SIDs, use the network-instance segment-routing mpls ingress-statistics true command.

Configure LSP statistics for shared prefix SIDs

--{ candidate shared default }--[  ]--
# info with-context network-instance default segment-routing mpls
    network-instance default {
        segment-routing {
            mpls {
                ingress-statistics true
            }
        }
    }

Display LSP statistics for shared prefix SIDs

To display per-label statistics for shared prefix SIDs, use the info from state network-instance default segment-routing mpls sid-statistics label command. The output also displays whether the flexible counter bank resource allocation is successful for the shared prefix SID statistics. 

--{ state }--[ ]--
# / info from state network-instance default segment-routing mpls sid-statistics label 1046
    prefix 10.0.0.3/32
    interface system0.0
    algorithm 0
    oper-state enabled
    octets 460720
    packets 2215
    resource-allocation success

Clear LSP statistics for shared prefix SIDs

To clear the shared prefix SID statistics, use the tools network-instance segment-routing mpls statistics clear command. 

--{ candidate shared default }--[  ]--
# tools network-instance segment-routing mpls statistics clear