Ospfv2 Implementation In Enterprise Nos; Configurable Parameters - Lenovo RackSwitch G8264CS Application Manual

OSPFv2 Implementation in Enterprise NOS

Configurable Parameters

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ENOS supports a single instance of OSPF and up to 4K routes on the network. The
following sections describe OSPF implementation in ENOS:
"Configurable Parameters" on page 473

 "Defining Areas" on page 474
 "Interface Cost" on page 476
 "Electing the Designated Router and Backup" on page 476
 "Summarizing Routes" on page 476
 "Default Routes" on page 477
 "Virtual Links" on page 477
 "Router ID" on page 478
 "Authentication" on page 479
In ENOS, OSPF parameters can be configured through the Industry Standard
Command Line Interfaces (ISCLI), Browser‐Based Interface (BBI), or through
SNMP. For more information, see Chapter
The ISCLI 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
G8264CS and one other device), this option allows the switch to significantly
reduce the amount of routing information it must carry and manage.
1, "Switch Administration."
Chapter 29: Open Shortest Path First
473