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Enterasys Networks XSR CLI Router User Manual

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OSPF Commands

5-90 Configuring the Internet Protocol

Figure 5-1 Area Virtual Link Example

auto-virtual-link

Thiscommandautomaticallycreatesvirtuallinks.Refertothearea-virtual-linkcommandfor

morerelatedinformation.

Syntax

auto-virtual-link

Syntax

Thiscommand’snoformnegatestheautomaticcreationofavirtuallink:

no auto-virtual-link

Mode

OSPFRouterconfiguration:XSR(config-router)#

Example

XSR(config-router)#auto-virtual-link

database-overflow

ThiscommanddynamicallylimitsthesizeofOSPFLink‐Statedatabaseoverflow,acondition

wheretheXSRisunabletomaintainthedatabaseinitsentirety.Typically ,databaseoverflow

occurswhenarouterimportsalargenumberofexternal,Type5LSAroutesintoOSPF.This

commandletsyoucontrolother

LSAtypesaswell:1‐4,7,and10.

Usually,thisproblemcanbeavertedbyproperconfigurationofOSPFroutersintostubareasor

NSSAs,sinceAS‐externalLSAsareomittedfromthistypeofLink‐Statedatabases.But,inthe

eventofanunexpecteddatabaseoverflow,thereisinsufficient

timetoperformthistypeof

isolation.

Syntax

database-overflow [LSA type][option]

LSA Type:

ABR1

ABR2

Area 0.0.0.0

Area 2

Area 3

Eth 1

virtual link

Serial 1/1

Eth 1

Serial 1/0

192.16.33.2

172.16.150.1

192.16.33.1

172.15.0.1

asbr-summary

ASBorderRouterSummaryLSA(Type4).

external

ASExternalAreaLSA(Type5).

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