display isis interface

Function

The display isis interface command displays information about IS-IS interfaces.

Format

display isis interface [ [ verbose | traffic-eng ] ^* | te-tunnel ] [ process-id | vpn-instance vpn-instance-name ] (supported only by the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H)

display isis process-id interface [ te-tunnel | [ traffic-eng | verbose ] ^* ] (supported only by the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H)

display isis interface interface-type interface-number [ verbose ]

display isis interface

display isis interface process-id

display isis process-id interface

display isis interface vpn-instance vpn-instance-name

Parameters

Parameter	Description	Value
verbose	Displays detailed information about IS-IS interfaces.	-
process-id	Specifies an IS-IS process ID.	The value is an integer that ranges from 1 to 65535.
traffic-eng	Displays Traffic Engineering information of IS-IS.	-
te-tunnel	Displays information on the MPLS TE tunnel of IS-IS.	-
vpn-instance vpn-instance-name	Display IS-IS interface information in the IS-IS multi-instance process in a specified VPN instance.	The value must be an existing VPN instance name.
interface-type interface-number	Specifies the type and number of an interface.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

You can use this command to view IS-IS interface information, including the interface name, IP address, link status of the interface. If verbose is specified, the command output also includes the configuration of IS-IS parameters for the interface, such as the CSNP broadcast interval, Hello packet broadcast interval, and number of IS-IS Hello packets that fail to be received before IS-IS declares the neighbor Down.

Example

# Display information about IS-IS interfaces.

<HUAWEI> display isis interface

                       Interface information for ISIS(1)

                       ---------------------------------

 Interface       Id      IPV4.State          IPV6.State      MTU  Type  DIS

 Vlanif10        001        Up                  Down         1497 L1/L2 No/No

# Display detailed information about IS-IS interfaces.

<HUAWEI> display isis interface verbose

                       Interface information for ISIS(1)
                       ---------------------------------
 Interface       Id      IPV4.State          IPV6.State      MTU  Type  DIS   
 Vlanif10       001         Up                 Down         1497 L1/L2 No/No 
  Circuit MT State            : Standard 
  Description                 : 
  SNPA Address                : 0000-1382-4569
  IP Address                  : 10.1.1.5
  IPV6 Link Local Address     :
  IPV6 Global Address (es)    :
  Csnp Timer Value            :  L1    10  L2    10
  Hello Timer Value           :  L1    10  L2    10
  DIS Hello Timer Value       :  L1     3  L2     3
  Hello Multiplier Value      :  L1     3  L2     3
  LSP-Throttle Timer          :  L12    50
  Cost                        :  L1    10  L2    10
  Ipv6 Cost                   :  L1    10  L2    10
  Priority                    :  L1    64  L2    64
  Retransmit Timer Value      :  L12    5
  Bandwidth-Value             :  Low 1000000000  High          0
  Static Bfd                  :  NO
  Dynamic Bfd                 :  NO
  Dynamic IPv6 Bfd            :  NO
  Fast-Sense Rpr              :  NO
  Suppress flapping peer      :  enable (flapping-count: 0, threshold: 10)

**Table 1** Description of the display isis interface command output
Item	Description
Interface	IS-IS interface type and number.
Id	Link ID.
IPV4.State	IPv4 link status.
MTU	Interface MTU. An IS-IS neighbor relationship can be established only when two interfaces on both ends of a link have the same MTU.
Type	Interface type: L1: Level-1 interface L2: Level-2 interface L1/L2: Level-1-2 interface
DIS	Whether the interface is a DIS. NOTE: Only an interface with network type broadcast can be selected as the DIS. If an interface is a P2P interface, "--" is displayed in this field.
Circuit MT State	Topology status on the interface: Standard: IPv4 is enabled on the interface, but IPv6 is not. IPv6 is enabled on the interface, but IPv4 is not. In addition, the topology type is standard. Both IPv4 and IPv6 are enabled on the interface. In addition, the topology type is standard. IPv6: IPv6 is enabled on the interface, but IPv4 is not. In addition, the topology type is IPv6. Standard IPv6: IPv6 is enabled on the interface, but IPv4 is not. In addition, the topology type is compatible. Both IPv4 and IPv6 are enabled on the interface. In addition, the topology type is compatible or IPv6. To configure the IPv6 topology type, run the ipv6 enable command in the IS-IS view.
SNPA Address	MAC address.
IP Address	IPv4 address of the interface.
IPV6 Link Local Address	IPv6 link-local address.
IPV6 Global Address(es)	IPv6 global address.
Csnp Timer Value	Interval for sending CSNPs. To set the interval for sending CSNPs, run the isis timer csnp command.
Hello Timer Value	Interval for sending Hello packets. To set the interval for sending Hello packets, run the isis timer hello command.
DIS Hello Timer Value	Interval at which the DIS sends Hello packets, which is one third of Hello Timer Value. The field takes effect only when the interface functions as the DIS.
Hello Multiplier Value	Number of consecutive Hello packets that are not received before the neighbor is declared Down. To set this value, run the isis timer holding-multiplier command.
LSP-Throttle Timer	Interval for sending LSPs or CSNPs and number of LSPs or CSNPs that are sent each time. To set the two values, run the isis timer lsp-throttle command.
Cost	Cost of an IPv4 interface. This field value affects route selection.
Ipv6 Cost	Cost of an IPv6 interface. This field value affects route selection in IPv6 topologies.
Priority	Priority for DIS election. To set the priority for DIS election, run the isis dis-priority command.
Retransmit Timer Value	Interval for retransmitting LSPs on a P2P link. To set the retransmit interval, run the isis timer lsp-retransmit command.
Bandwidth-Value	Physical bandwidth of an interface. The value can be calculated using the following formula: Bandwidth-Value = 4294967296 x high + low. For example, if the value of high is 1 and the value of low is 705032704, Bandwidth-Value = 1 x 4294967296 + 705032704 = 5000000000. low: low bandwidth with the maximum value of 4294967295 high: high bandwidth with the maximum value of 4294967295
Static Bfd	Status BFD status: NO: Static BFD is not enabled. YES: Static BFD is enabled. To enable BFD on an interface, run the isis bfd static command.
Dynamic Bfd	Dynamic BFD status: NO: Dynamic BFD is not enabled. YES: Dynamic BFD is enabled. To enable dynamic BFD on an interface, run the bfd all-interfaces enable or isis bfd enable command.
Dynamic IPv6 Bfd	Status of dynamic IPv6 BFD: NO: Dynamic BFD is not enabled on the interface. YES: Dynamic BFD is enabled on the interface. To enable dynamic IPv6 BFD on an interface, run the ipv6 bfd all-interfaces enable or isis ipv6 bfd enable command.
Fast-Sense Rpr	Whether the fast sense RPR function is enabled.
Suppress flapping peer	Status of IS-IS neighbor relationship flapping suppression: NO: IS-IS neighbor relationship flapping suppression is disabled. YES (flapping-count: 3, threshold: 10): IS-IS neighbor relationship flapping suppression is enabled and IS-IS neighbor relationship is not suppressed. The flapping-count and threshold value. Hold-down(start: UTC 10:20:30, remain-interval: 7): IS-IS neighbor relationship flapping suppression works in Hold-down mode. The starting and remaining time of the flapping suppression. Hold-max-cost(start: UTC 10:20:30, remain-interval: 7): IS-IS neighbor relationship flapping suppression works in Hold-max-cost mode. The starting and remaining time of the flapping suppression. NOTE: In the flapping suppression state, remain-interval is reset each time when the device detects a valid neighbor flapping event.