Allied Telesis AT-9800 manual Add ospf area, NSSAStability=1..3600 NSSATranslator=CANdidateALWays

94 Open Shortest Path First Enhancements Release Note

Command Reference Updates

This section describes each new command and the changed portions of modified commands and output screens. For modified commands and output, the new parameters, options, and fields are shown in bold.

add ospf area

Syntax ADD OSPF AREa={BAckbonearea-number} [AUthentication={NONEPASSwordMD5}]

[NSSAStability=1..3600] [NSSATranslator={CANdidateALWays}]

[STUBArea={ONOFFYESNONSSATrueFalse}] [STUBMetric=0..16777215] [SUMmary={SENdNONEOFFNOFalse}]

where area-numberis a 4-byte OSPF area number in dotted decimal notation

Description The new nssatranslator parameter sets the NSSA translator role when the router or switch is acting as an NSSA border router. If you specify always, the router or switch will always translate Type-7 LSAs to Type-5 LSAs, regardless of the translator state of other border routers in the NSSA, as long as it retains border router status. If it loses border router status it will stop translating Type-7 LSAs until it regains border router status. If you specify candidate, the router or switch will participate in the NSSA translator election process. The NSSA border router with the highest router identifier is elected as the translator. Once elected, the router or switch will translate Type-7 LSAs until it loses border router status or another NSSA border router with a higher router identifier is elected as the translator. The default is candidate. If the router or switch is acting as a translator it will set the Nt bit in router LSAs it originates into the NSSA. The nssatranslator parameter is only valid when stubarea is set to nssa.

The new nssastability parameter specifies the additional time, in seconds, that the router or switch will continue to translate Type-7 LSAs after losing the translator role. An elected translator loses its translator role when another NSSA border router with a higher router identifier is elected as translator, or an NSSA router configured to always translate gains border router status. The time interval allows for a more stable transition to the newly elected translator and minimises excessive flushing of translated Type-7 LSAs. The default is 40. The nssastability parameter is only valid when stubarea is set to nssa and nssatranslator is set to candidate.

Software Version 2.8.1 C613-10477-00 REV B