Allowing or blocking advertisement of a range of internal routes available in an area by an
ABR.............................................................................................................................................209
Allowing or blocking a range of external routes available through an ASBR in an NSSA...........209
Influencing route choices by changing the administrative distance default........................................... 210
Changing OSPF trap generation choices.............................................................................................. 210
Adjusting performance by changing the VLAN or subnet interface settings.......................................... 211
Indicating the cost per-interface.................................................................................................. 211
Indicating the per-interface dead interval.................................................................................... 212
Indicating the per-interface hello interval.................................................................................... 212
Changing priority per-interface....................................................................................................213
Changing retransmit interval per-interface.................................................................................. 213
Changing transit-delay per-interface........................................................................................... 213
Examples of changing per-interface settings.............................................................................. 214
Configuring OSPF interface authentication............................................................................................214
Configuring OSPF password authentication............................................................................... 214
Configuring OSPF MD5 authentication....................................................................................... 215
Configuring a virtual link.........................................................................................................................216
Changing the dead interval on a virtual link................................................................................ 217
Indicating the hello interval on a virtual link.................................................................................218
Changing the retransmitting interval on a virtual link.................................................................. 218
Changing the transit-delay on a virtual link................................................................................. 219
Configuring OSPF authentication on a virtual link................................................................................. 219
Authenticating OSPF MD5 on a virtual link................................................................................. 219
Configuring a passive OSPF interface...................................................................................................220
Configuring the calculation interval........................................................................................................ 221
Viewing OSPF information.....................................................................................................................222
Viewing general OSPF configuration information........................................................................222
Viewing OSPF area information..................................................................................................224
Viewing OSPF external link-state information.............................................................................225
Viewing OSPF interface information........................................................................................... 227
Viewing OSPF interface information for a specific VLAN or IP address..................................... 228
Viewing OSPF packet statistics for a subnet or VLAN................................................................231
Clearing OSPF statistics for all VLAN interfaces on the switch.................................................. 233
Viewing OSPF link-state information...........................................................................................233
Viewing OSPF neighbor information........................................................................................... 237
Viewing OSPF redistribution information.....................................................................................240
Viewing OSPF redistribution filter (restrict) information...............................................................240
Viewing OSPF virtual neighbor information.................................................................................241
Viewing OSPF virtual link information......................................................................................... 241
Viewing OSPF SPF statistics...................................................................................................... 243
Displaying OSPF route information.............................................................................................244
Viewing OSPF traps enabled...................................................................................................... 246
Debugging OSFP routing messages...........................................................................................246
Enabling load sharing among next-hop routes...................................................................................... 246
Viewing the current IP load-sharing configuration.......................................................................247
Overview of OSPF................................................................................................................................. 247
OSPF router types...................................................................................................................... 249
Interior routers.................................................................................................................. 249
Area border routers (ABRs)..............................................................................................249
Autonomous system boundary router (ASBR)................................................................. 249
Designated routers (DRs).................................................................................................250
OSPF area types................................................................................................................................... 251
Backbone area............................................................................................................................ 252
Normal area................................................................................................................................ 252
Not-so-stubby-area (NSSA)........................................................................................................ 252
Stub area.....................................................................................................................................253
OSPF RFC compliance..........................................................................................................................253
10 Aruba 3810 / 5400R Multicast and Routing Guide for ArubaOS-
Switch 16.08