Supported Platforms
clear isis database
Syntax
Syntax (EX Series Switches and QFX Series)
Release Information
Command introduced before Junos OS Release 7.4.
Command introduced in Junos OS Release 9.0 for EX Series switches.
purge option introduced in Junos OS Release 9.0.
Command introduced in Junos OS Release 12.1 for the QFX Series.
Description
Remove the entries from the IS-IS link-state database, which contains prefixes and topology information. You can also use purge with any of the options to initiate a network-wide purge of link-state PDUs rather than the local deletion of entries from the IS-IS link-state database.
 | Caution: In a production network, the purge command option might cause short-term network-wide traffic disruptions. |
Options
none | — | Remove all entries from the IS-IS link-state database for all routing instances. |
entries | — | (Optional) Name of the database entry. |
instance instance-name | — | (Optional) Clear all entries for the specified routing instance. |
logical-system (all | logical-system-name) | — | (Optional) Perform this operation on all logical systems or on a particular logical system. |
purge | — | (Optional) Discard all entries in the IS-IS link-state database. |
Required Privilege Level
clear
List of Sample Output
clear isis databaseOutput Fields
See show isis database for an explanation of output fields.
Sample Output
clear isis database
The following sample output displays IS-IS link-state database information before and after the clear isis database command is entered:
user@host> show isis database IS-IS level 1 link-state database: LSP ID Sequence Checksum Lifetime (secs) crater.00-00 0x12 0x84dd 1139 1 LSPs IS-IS level 2 link-state database: LSP ID Sequence Checksum Lifetime (secs) crater.00-00 0x19 0xe92c 1134 badlands.00-00 0x16 0x1454 985 carlsbad.00-00 0x33 0x220b 1015 ranier.00-00 0x2e 0xfc31 1007 1921.6800.5066.00-00 0x11 0x7313 566 1921.6800.5067.00-00 0x14 0xd9d4 939 6 LSPs
user@host> clear isis database user@host> show isis database IS-IS level 1 link-state database: LSP ID Sequence Checksum Lifetime (secs) IS-IS level 2 link-state database: LSP ID Sequence Checksum Lifetime (secs)
