Ospfv2 Implementation In Lenovo N/Os; Configurable Parameters - Lenovo CN4093 Application Manual

OSPFv2 Implementation in Lenovo N/OS

Configurable Parameters

452
CN4093 Application Guide for N/OS 8.3
Lenovo N/OS supports a single instance of OSPF and up to 2K routes on the
network. The following sections describe OSPF implementation in Lenovo N/OS:
 "Configurable Parameters" on page 452
"Defining Areas" on page 453

 "Interface Cost" on page 455
"Electing the Designated Router and Backup" on page 455

 "Summarizing Routes" on page 455
"Default Routes" on page 456

 "Virtual Links" on page 457
"Router ID" on page 457

 "Authentication" on page 458
In Lenovo N/OS, OSPF parameters can be configured through the Command Line
Interfaces (CLI/ISCLI), Browser-Based Interface (BBI), or through SNMP. For more
information, see "Switch Administration" on page
The CLI supports the following parameters: interface output cost, interface
priority, dead and hello intervals, retransmission interval, and interface transmit
delay.
In addition to the preceding parameters, you can specify the following:
 Shortest Path First (SPF) interval—Time interval between successive calculations
of the shortest path tree using the Dijkstra's algorithm.
 Stub area metric—A stub area can be configured to send a numeric metric value
such that all routes received via that stub area carry the configured metric to
potentially influence routing decisions.
 Default routes—Default routes with weight metrics can be manually injected
into transit areas. This helps establish a preferred route when multiple routing
devices exist between two areas. It also helps route traffic to external networks.
 Passive—When enabled, the interface sends LSAs to upstream devices, but does
not otherwise participate in OSPF protocol exchanges.
 Point-to-Point—For LANs that have only two OSPF routing agents (the CN4093
and one other device), this option allows the switch to significantly reduce the
amount of routing information it must carry and manage.
29."