show isis

IS-IS Routing Protocol Operation State

The operating state of IS-IS. Possible states include the following:

• Enabled - IS-IS is enabled.
• Disabled - IS-IS is disabled.

IS-Type

The intermediate system type. Possible types include the following:

• Level 1 only - The device routes traffic only within the area in which it resides.
• Level 2 only - The device routes traffic between areas of a routing domain.
• Level 1-2 - The device routes traffic within the area in which it resides and between areas of a routing domain.

System ID

The unique IS-IS router ID. Typically, the device‘s base MAC address is used as the system ID.

Manual area address(es)

Area address(es) of the device.

Level-1-2 Database State

The state of the Level 1-2 Database:

• On
• Off

Administrative Distance

The current setting of the IS-IS administrative distance.

Maximum Paths

The number of paths IS-IS can calculate and install in the forwarding table

Default redistribution metric

The value of the default redistribution metric, which is the IS-IS cost of redistributing the route into IS-IS.

Number of Routes redistributed into IS-IS

The number of routes distributed into IS-IS.

Level-1 Auth-mode

One of the following authentication modes set for Level-1 on the router:

• None
• md5
• cleartext

Level-2 Auth-mode

One of the following authentication modes set for Level-2 on the router:

• None
• md5
• cleartext

Metric Style Supported for Level-1

The following values are supported:

• Wide - Wide Metric Style
• Narrow - Narrow Metric Style

Metric Style Supported for Level-2

The following values are supported:

• Wide - Wide Metric Style
• Narrow - Narrow Metric Style

IS-IS Partial SPF Optimizations

This parameter can contain one of the following values:

• Enabled
• Disabled

Timers: L1 or L2 SPF:

These values are displayed individually for IS-IS levels 1 and 2.

max-wait

The maximum time gap that occurs between running of SPF calculations. It is the value configured as the spf-max-wait variable in thespf-interval command.

Init-wait

The initial time gap between an SPF event and the first running of SPF. This value reflects the spf-initial-time variable that is configured using the spf-interval command.

Second-wait

The interval between the first running of SPF and the first recalculation of the SPF tree. If this optional value is configured, it is doubled with each recalculation of the SPF tree until the value is equal to the max-wait value

This value reflects the spf-second-wait variable that is configured using the spf-interval command.

SPF run status.

This field is not specifically labeled but is displayed directly under the SPF timers. It can any of the three values shown below:

• SPF is running
• SPF will run in sec where the sec variable is a value in seconds until the next time that SPF will be run.
• SPF is not scheduled

Timers: PSPF:

max-wait

The maximum time gap that occurs between running of PSPF calculations. It is the value configured as the max-wait value in thepartial-spf-interval command.

Init-wait

The initial time gap between the wait time after an LSP change until the first PSPF calculation. This value reflects the initial-wait variable that is configured using the partial-spf-interval command.

Second-wait

The wait time between the first and second PSPF calculations. If this optional value is configured, it is doubled with each PSPF recalculation until the value is equal to the max-wait value

This value reflects the second-wait variable that is configured using the partial-spf-interval command.

PSPF run status.

This field is not specifically labeled but is displayed directly under the PSPF timers. It can any of the three values shown below:

• PSPF is running
• PSPF will run in sec where the sec variable is a value in seconds until the next time that PSPF will be run.
• PSPF is not scheduled

Timers: LSP:

max-lifetime

The maximum number of seconds an unrefreshed LSP can remain in the device‘s LSP database.

The default value is 1000 sec.

refresh-interval

The maximum number of seconds that a device waits between sending updated LSPs to its IS-IS neighbors.

The default value is 1 sec.

gen-interval

The minimum number of seconds that a device waits between sending updated LSPs to its IS-IS neighbors.

The default value is 10 sec.

retransmit-interval

The amount of time the device waits before it retransmits LSPs.

The default value is 5 sec.

lsp-interval

The rate of transmission (in milliseconds) of the LSPs.

The default rate is 33 ms.

Timers: SNP:

csnp-interval

How often the designated IS sends a CSNP to the broadcast interface.

The default value is 10 sec.

psnp-interval

How often the IS sends a PSNP.

The default value is 2 sec.

Global Hello Padding

This value can be:

• Enabled
• Disabled

Global Hello Padding For Point to Point Circuits

This value can be:

• Enabled
• Disabled

Ptpt Three Way HandShake Mechanism

This value can be:

• Enabled
• Disabled

IS-IS Traffic Engineering Support

This value can be:

• Enabled
• Disabled

BFD

This value can be:

• Enabled
• Disabled

Interfaces with IPv4 IS-IS configured

Interfaces on which IPv4 IS-IS is configured.