LSType:Type-5 AS External(5) Age:1 Seq:0x8000000c id:170.1.1.0 Adv:6.1.0.0Netmask:255.255.255.0 fwd:0.0.0.0 E2, tos:0 metric:0LSType:Type-5 AS External(5) Age:1 Seq:0x8000000c id:170.1.2.0 Adv:6.1.0.0Netmask:255.255.255.0 fwd:0.0.0.0 E2, tos:0 metric:0To confirm that you enabled RFC-2328–compliant OSPF flooding, use the show ip ospf command.Dell#show ip ospfRouting Process ospf 1 with ID 2.2.2.2Supports only single TOS (TOS0) routesIt is an Autonomous System Boundary RouterIt is Flooding according to RFC 2328SPF schedule delay 5 secs, Hold time between two SPFs 10 secsNumber of area in this router is 1, normal 0 stub 0 nssa 1--More--OSPF ACK PackingThe OSPF ACK packing feature bundles multiple LS acknowledgements in a single packet, significantlyreducing the number of ACK packets transmitted when the number of LSAs increases.This feature also enhances network utilization and reduces the number of small ACK packets sent to aneighboring router. OSPF ACK packing is enabled by default and non-configurable.Setting OSPF Adjacency with Cisco RoutersTo establish an OSPF adjacency between Dell Networking and Cisco routers, the hello interval and deadinterval must be the same on both routers.In Dell Networking OS, the OSPF dead interval value is, by default, set to 40 seconds, and is independentof the OSPF hello interval. Configuring a hello interval does not change the dead interval in DellNetworking OS. In contrast, the OSPF dead interval on a Cisco router is, by default, four times as long asthe hello interval. Changing the hello interval on the Cisco router automatically changes the deadinterval.To ensure equal intervals between the routers, use the following command.• Manually set the dead interval of the Dell Networking router to match the Cisco configuration.INTERFACE modeip ospf dead-interval Example of Setting a Dead IntervalExample of Viewing Dead Interval SettingIn the following example, the dead interval is set at 4x the hello interval (shown in bold).Dell(conf)#int gi 2/2Dell(conf-if-gi-2/2)#ip ospf hello-interval 20Dell(conf-if-gi-2/2)#ip ospf dead-interval 80Dell(conf-if-gi-2/2)#In the following example, the dead interval is set at 4x the hello interval (shown in bold).Dell (conf-if-gi-2/2)#ip ospf dead-interval 20Dell (conf-if-gi-2/2)#do show ip os int gi1/3GigabitEthernet 2/2 is up, line protocol is upOpen Shortest Path First (OSPFv2 and OSPFv3) 553
