ISIS Configuration

此内容尚不支持你的语言。

show isis database

[Command] show isis database {detail|json}

[Purpose] Display the IS-IS link-state database known to the local router

[Parameter]

Parameter	Description
detail	Display detailed information from the ISIS link state database
json	ISIS link state database information in JSON format

[View] System View

[Use Cases]

sonic# show isis database
Area test1:
IS-IS Level-2 link-state database:
LSP ID                  PduLen  SeqNumber   Chksum  Holdtime  ATT/P/OL
sonic.00-00                82   0x0000000a  0x97f5     383    0/0/0
sonic.00-00          *     82   0x00000007  0x49ab     321    0/0/0
sonic.1f-00          *     52   0x00000005  0x7d14     412    0/0/0
3 LSPs

Area test2:
IS-IS Level-1 link-state database:
LSP ID                  PduLen  SeqNumber   Chksum  Holdtime  ATT/P/OL
sonic.00-00                83   0x00000008  0x4c8f     454    1/0/0
sonic.00-00          *     83   0x00000007  0x6fb0     455    1/0/0
sonic.20-00          *     51   0x00000005  0xadca     452    1/0/0
3 LSPs

IS-IS Level-2 link-state database:
LSP ID                  PduLen  SeqNumber   Chksum  Holdtime  ATT/P/OL
sonic.00-00                83   0x00000008  0x449f     401    0/0/0
sonic.00-00          *     83   0x00000007  0x67c0     452    0/0/0
sonic.20-00          *     51   0x00000005  0xa5da     396    0/0/0
3 LSPs

Area test3:
IS-IS Level-1 link-state database:
LSP ID                  PduLen  SeqNumber   Chksum  Holdtime  ATT/P/OL
sonic.00-00                82   0x00000008  0x3d30     446    0/0/0
sonic.00-00          *     82   0x00000007  0xeae7     468    0/0/0
sonic.21-00          *     52   0x00000005  0x6d24     439    0/0/0
3 LSPs

show isis summary

[Command] show isis summary [json]

[Purpose] Display ISIS summary information

[Parameter]

Parameter	Description
Up time	ISIS runtime
L1 IIH	Number of Level-1 LAN Hello messages
P2P IIH	Number of peer-to-peer Hello messages
L1 LSP	Number of Level-1 Link-State Messages
L1 CSNP	Level-1 Number of complete serial number messages
L1 PSNP	Number of partial serial number messages in Level 1
LSP RXMT	Number of LSP messages retransmitted

[View] System View

[Use Cases]

sonic# show isis summary
vrf             : default
Process Id      : 54
System Id       : 0000.0000.0140
Up time         : 1d01h41m ago
Number of areas : 1
Area test:
  Net: 47.0000.0000.0140.00
  TX counters per PDU type:
     L1 IIH: 4
    P2P IIH: 32413
     L1 LSP: 110
    L1 CSNP: 10266
    L1 PSNP: 231
   LSP RXMT: 0
  RX counters per PDU type:
    P2P IIH: 32423
     L1 LSP: 233
    L1 CSNP: 10266
    L1 PSNP: 110
  Drop counters per PDU type:
    P2P IIH: 2
  Advertise high metrics: Disabled
  Level-1:
    LSP0 regenerated: 111
         LSPs purged: 0
    SPF:
      minimum interval  : 1
    IPv4 route computation:
      last run elapsed  : 00:11:44 ago
      last run duration : 333 usec
      run count         : 341

show isis hostname

[Command] show isis hostname

[Purpose] View the mapping between hostnames and system IDs in the IS-IS protocol

[Parameter]

Parameter	Description
Dynamic	Dynamic hostname mapping
Hostname	Static hostname mapping

[View] System View

[Use Cases]

sonic# show isis hostname
vrf     : default
Level  System ID      Dynamic Hostname
1      0000.0000.0185 sonic
1      0000.0000.0107 sonic
     * 0000.0000.0140 sonic

show isis interface

[Command] show isis interface {ethernet* IFNAME |vlan vlan-id |link-aggregation lag-id *|detail}

[Purpose] Display the status of the designated ISIS interface or all enabled ISIS interfaces

[View] System View

[Use Cases]

sonic# show isis interface
Area test:
  Interface   CircId   State    Type     Level
  eth 13       0x30     Up       lan      L1
Area test1:
  Interface   CircId   State    Type     Level
  eth 46       0x11     Up       lan      L2
Area test2:
  Interface   CircId   State    Type     Level
  eth 47       0xe      Up       lan      L1L2
Area test3:
  Interface   CircId   State    Type     Level
  eth 48       0xf      Up       lan      L1

show isis neighbor

[Command] show isis neighbor {detail|json|* system_id***}**

[Purpose] Display the status and information of ISIS neighbors

[View] System View

[Use Cases]

6.2.5  show isis neighbor {detail|json|<system_id>}
[Command]
show isis neighbor {detail|json|<system_id>}
[Purpose]
Display the status and information of ISIS neighbors
[Parameter]
<SYSTEMID>      Specify the neighbor's System ID
[View]
System View
[Use Cases]
sonic# show isis neighbor
Area test:
 System Id           Interface   L  State         Holdtime SNPA
 sonic               eth 13  1  Up            30       000e.c656.9d35
Area test1:
 System Id           Interface   L  State         Holdtime SNPA
 sonic               eth 46  2  Up            29       60eb.5103.1140
Area test2:
 System Id           Interface   L  State         Holdtime SNPA
 sonic               eth 47  1  Up            27       60eb.5103.1140
 sonic               eth 47  2  Up            28       60eb.5103.1140
Area test3:
 System Id           Interface   L  State         Holdtime SNPA
 sonic               eth 48  1  Up            28       60eb.5103.1140

show isis route

[Command] show isis route {level-1|level-2|backup}

[Purpose] Display all route entries learned by the current device via the IS-IS routing protocol

[View] System View

[Use Cases]

sonic# show isis route
Area test1:
IS-IS paths to level-2 routers that speak IP
 Vertex         Type         Metric  Next-Hop  Interface   Parent
 --------------------------------------------------------------------
 sonic
 100.0.46.0/24  IP internal  0                             sonic(3)
 sonic          IS           10      sonic     eth 22  sonic(3)
 sonic

IS-IS L2 IPv4 routing table:

 Prefix         Metric  Interface  Nexthop  Label(s)
 -----------------------------------------------------
 100.0.46.0/24  0       -          -        -

[Command] show isis fast-reroute summary [level-1|level-2]

[Purpose] Display ISIS routing protection statistics

[View] System View

[Use Cases]

sonic# show isis fast-reroute summary
Area test1:
 IS-IS L2 IPv4 Fast ReRoute summary:

 Protection \ Priority     Critical  High      Medium    Low       Total
 -------------------------------------------------------------------------
 Classic LFA               0         0         0         0         0
 Remote LFA                0         0         0         0         0
 Topology Independent LFA  0         0         0         0         0
 ECMP                      0         0         0         0         0
 Unprotected               0         0         0         0         0
 Protection coverage       0.00%     0.00%     0.00%     0.00%     0.00%

router isis

[Command] router isis* name***[vrf*** name***]**

[Purpose] Configure the ISIS instance name and navigate to the ISIS instance configuration view

[View] System Configuration View

[Notes] ISIS cannot establish neighbors over the loopback interface; if ISIS is enabled on the loopback interface, it will simply forward the loopback interface’s routes through other ISIS interfaces.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test

net

[Command] net* XX.XXXX.XXXX.XXXX.XX*

[Purpose] Configure NET

[Parameter]

Parameter	Description
XX.XXXX.XXXX.XXXX.XX	Network Entity Tag (NET), where the first two digits represent the region ID, the middle twelve digits represent the ISIS system ID, and the last two digits represent the SEL (NSAP selector), which is typically 00.

[View] ISIS Configuration View

[Notes] In NET, the region ID is a variable field that can be configured as either XX or XX.XXXX. In Level-1, devices must be in the same region to establish a neighbor relationship properly.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# net 11.1111.1111.1111.00

password

[Command]

area-password md5* password* domain-password md5* password* area-password md5 clear domain-password md5 clear

[Purpose]

Authentication between configuration regions or routing domains

[Parameter]

Parameter	Description
area-password	Inter-zone authentication, such as authentication between Level-1 and Level-1 zones or between Level-1 and Level-2 zones
domain-password	Authentication between routing domains, such as between Level-2 and Level-2 routing domains or between Level-1 and Level-2 routing domains
clear	Explicit authentication
password	Ciphertext authentication

[View] ISIS Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# area-password md5 test123

[Command] fast-reroute load-sharing disable [level-1|level-2]

[Purpose] Disable load balancing for LFA backup paths within the specified region

[View] ISIS Configuration View

[Notes] The device has the LFA backup path load balancing feature enabled by default. If the primary link fails and multiple backup paths are available, load balancing will be performed using ECMP.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# fast-reroute load-sharing disable level-1

fast-reroute priority-limit

[Command] fast-reroute priority-limit {critical|high|medium} [level-1|level-2]

[Purpose] Enable LFA backup path calculation for different routing levels

[Parameter]

Parameter	Description
critical	Calculate LFA backup paths only for critical-level routes
high	Compute LFA backup paths for critical and high-priority routes
medium	Calculate LFA backup paths for critical, high, and medium-priority routes

[View] ISIS Configuration View

[Notes] By default, the device calculates LFA backup paths for all routing levels.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# fast-reroute priority-limit critical level-1

fast-reroute lfa tiebreaker

[Command] fast-reroute lfa tiebreaker {downstream|lowest-backup-metric|node-protecting} index* index_id***[level-1|level-2]**

[Purpose] Configure the LFA backup path calculator and set priorities

[Parameter]

Parameter	Description
downstream	Prefer paths where the cost of reaching the next hop to the destination is lower than the cost of reaching the destination directly
lowest-backup-metric	Select the backup path with the lowest total cost
node-protecting	Give priority to backup paths that do not pass through the next hop on the main route
index_id	The smaller the number, the higher the priority. Range: 1–255

[View] ISIS Configuration View

[Notes] The LFA backup path calculation resolver supports multiple configurations and allows you to set different priorities for sequential matching.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# fast-reroute lfa tiebreaker node-protecting index 10 level-1

metric-style

[Command] metric-style {narrow|transition|wide}

[Purpose] Configure the mode for setting the router’s metric

[Parameter]

Parameter	Description
narrow	Traditional narrow-metric model
transition	Transition mode, supporting both narrow and wide metrics
wide	Width-based mode

[View] ISIS Configuration View

[Notes] ISIS devices configured in narrow mode and wide mode cannot establish neighbors properly; they must be set to transition mode to facilitate the transition.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# metric-style narrow

redistribute

[Command] redistribute {ipv4|ipv6} {kernel|connected|static|ospf|bgp|table} {level-1|level-2} [metric* value***|route-map*** name***]**

[Purpose] Publish a routing agreement to the designated routing area via an ISIS neighbor

[Parameter]

Parameter	Description
metric* value*	Set the metric value for the route. Configuration range: 0-16777215
route-map* name*	Bind routing policies to filter published routes

[View] ISIS Configuration View

[Notes] ISIS automatically announces the routing information associated with the interfaces bound to ISIS instances.

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# redistribute ipv4 ospf level-1 metric 10

is-type

[Command] is-type {level-1|level-1-2|level-2-only}

[Purpose] Define the ISIS router level

[Parameter]

Parameter	Description
level-1	Site Router
level-1-2	It can function as both a site router and a zone router
level-2	Area Router

[View] ISIS Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# router isis test
sonic(config-router)# is-type level-1

ip router isis

[Command] ip router isis* name***[vrf*** name***]** ipv6 router isis* name***[vrf*** name***]**

[Purpose] Bind an ISIS instance to an interface

[View] Interface Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# ip router isis test

isis circuit-type

[Command] isis circuit-type {level-1|level-1-2|level-2-only}

[Purpose] Set the ISIS router level for the interface

[View] Interface Configuration View

[Notes] If the router level of the ISIS instance is set to level-1 but the interface is configured as level-2, this will cause the ISIS neighbor establishment to fail.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis circuit-type level-1

isis hello padding

[Command] isis hello padding

[Purpose] Add padding to the IS-IS hello packet to bring it up to the interface MTU size

[View] Interface Configuration View

[Notes] This feature is enabled by default. If you do not want to pad the hello message with meaningless fields, you must configure “no isis hello padding”.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis hello padding

isis hello-interval

[Command] isis hello-interval [level-1|level-2]* interval*

[Purpose] Set the interval for sending hello packets on different router interfaces

[Parameter]

Parameter	Description
interval	Interval between sending hello messages; default: 3 seconds; configurable range: 1–600

[View] Interface Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis hello-interval level-1 2

isis hello-multiplier

[Command] isis hello-multiplier [level-1|level-2]* interval*

[Purpose] Set the ISIS neighbor keepalive interval to a multiple of the hello packet interval

[Parameter]

Parameter	Description
interval	Interval between sending hello messages; default: 3 seconds; configurable range: 1–600

[View] Interface Configuration View

[Notes] The ISIS neighbor keepalive interval = hello-interval * hello-multiplier. Modifying the hello-interval and hello-multiplier parameters will change the keepalive interval for the peer’s ISIS neighbors.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis hello-multiplier level-1 5

isis metric

[Command] isis metric [level-1|level-2]* metric_num*

[Purpose] Routing metrics for device interfaces

[Parameter]

Parameter	Description
metric_num	Default value: 20; configurable range: 0-16777215; the lower the value, the higher the priority

[View] Interface Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis metric level-1 100

isis network point-to-point

[Command] isis network point-to-point

[Purpose] Set the network type for the device interface to Point-to-Point

[View] Interface Configuration View

[Notes] The device’s default network type is broadcast.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis network point-to-point

isis passive

[Command] isis passive

[Purpose] Set the interface to passive mode

[View] Interface Configuration View

[Notes] In passive mode, ISIS neighbor relationships are disconnected and no ISIS HELLO messages are sent; only routing synchronization with neighbors occurs.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis passive

isis password

[Command] isis password md5* password* isis password clear

[Purpose]

Configure interface authentication

[Parameter]

Parameter	Description
md5* password*	Authentication password
clear	Plaintext verification

[View] Interface Configuration View

[Notes] After the interface authentication fails, an ISIS neighbor relationship cannot be established properly.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis password md5 test

isis priority

[Command] isis priority* PRIORITY***[level-1|level-2]**

[Purpose] Configure the priority parameters for the interfaces; the interface with the highest priority will be designated as the DIS.

[Parameter]

Parameter	Description
PRIORITY	Priority (0–127), default 64; the higher the value, the higher the priority

[View] Interface Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis priority 2

isis csnp-interval

[Command] isis csnp-interval* INTERVAL***[level-1|level-2]**

[Purpose] Configure the CSNP message transmission interval for ISIS

[Parameter]

Parameter	Description
INTERVAL	Message interval, configurable range: 1–600 seconds

[View] Interface Configuration View

[Notes] When this parameter is set to a value greater than 1, there will be a random time deviation of up to 10% of the packet transmission interval. This limit is intended to prevent a large number of CSNP packets from being sent simultaneously.

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)# isis csnp-interval 10 level-1

isis three-way-handshake

[Command] isis three-way-handshake

[Purpose] Enable or disable the three-way handshake when establishing a P2P connection. The three-way handshake is enabled by default

[View] Interface Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# interface ethernet 49
sonic(config-if-49)#three-way-handshake