Users Guide

View OSPFv2 SPF throttling
OS10(config-router-ospf-100)# do show ip ospf
Routing Process ospf 100 with ID 12.1.1.1
Supports only single TOS (TOS0) routes
It is Flooding according to RFC 2328
SPF schedule delay 1200 msecs, Hold time between two SPFs 2300 msecs
Convergence Level 0
Min LSA origination 0 msec, Min LSA arrival 1000 msec
Min LSA hold time 5000 msec, Max LSA wait time 5000 msec
Number of area in this router is 1, normal 1 stub 0 nssa 0
Area (0.0.0.1)
Number of interface in this area is 1
SPF algorithm executed 1 times
View OSPFv3 SPF throttling
OS10(config-router-ospfv3-100)# timers spf 1345 2324 9234
OS10(config-router-ospfv3-100)# do show ipv6 ospf
Routing Process ospfv3 100 with ID 129.240.244.107
SPF schedule delay 1345 msecs, Hold time between two SPFs 2324 msecs
Min LSA origination 5000 msec, Min LSA arrival 1000 msec
Min LSA hold time 0 msec, Max LSA wait time 0 msec
Number of area in this router is 1, normal 1 stub 0 nssa
Area (0.0.0.1)
Number of interface in this area is 1
SPF algorithm executed 2 times
OSPFv2
OSPFv2 supports IPv4 address families. OSPFv2 routers initially exchange hello messages to set up adjacencies with neighbor
routers. The hello process establishes adjacencies between routers of the AS. It is not required that every router within the
AS areas establish adjacencies. If two routers on the same subnet agree to become neighbors through this process, they begin
to exchange network topology information in the form of LSAs.
In OSPFv2, neighbors on broadcast and non-broadcast multiple access (NBMA) network links are identified by their interface
addresses, while neighbors on other types of links are identified by router-identifiers (RID).
Enable OSPFv2
OSPFv2 is disabled by default. Configure at least one interface as either Physical or Loopback and assign an IP address to the
interface. You can assign any area besides area 0 a number ID. The OSPFv2 process starts automatically when you configure it
globally and you can enable it for one or more interfaces.
1. Enable OSPF globally and configure an OSPF instance in CONFIGURATION mode.
router ospf instance-number
2. Enter the interface information to configure the interface for OSPF in INTERFACE mode.
interface ethernet node/slot/port[:subport]
3. Enable the interface in INTERFACE mode.
no shutdown
4. Disable the default switchport configuration and remove it from an interface or a LAG port in INTERFACE mode.
no switchport
5. Assign an IP address to the interface in INTERFACE mode.
ip address ip-address/mask
Layer 3
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