Dell S4148U-ON OS10 Enterprise Edition User Guide Release 10.4.0E R2 - Page 345

112.112.112.1 112.112.112.1 1305 0x80000250 0xbab2 1 112.112.112.2 112.112.112.2 1305 0x80000250 0xbeaa 1 Network (Area 0.0.0.0) Link ID 110.1.1.2 111.1.1.1 111.2.1.1 112.1.1.1 112.2.1.1 ADV Router 112.2.1.1 111.2.1.1 111.2.1.1 112.2.1.1 112.2.1.1 Age 1287 1458 1458 1372 1372 Seq# 0x80000008 0x80000008 0x80000008 0x80000008 0x80000008 Checksum 0xd2b1 0x1b8f 0x198f 0x287c 0x267c Summary Network (Area 0.0.0.0) Passive interfaces A passive interface does not send or receive routing information. Configuring an interface as a passive interface suppresses both receiving and sending routing updates. Although the passive interface does not send or receive routing updates, the network on that interface is included in OSPF updates sent through other interfaces. 1 Enter an interface type in INTERFACE mode. interface ethernet node/slot/port[:subport] 2 Configure the interface as a passive interface in INTERFACE mode. ip ospf passive Configure passive interfaces OS10(config)# interface ethernet 1/1/6 OS10(conf-if-eth1/1/6)# ip ospf passive View passive interfaces OS10# show running-configuration !!! !! interface ethernet1/1/6 ip address 10.10.10.1/24 no switchport no shutdown ip ospf 100 area 0.0.0.0 ip ospf passive !! ! You can disable a passive interface using the no ip ospf passive command. Fast convergence Fast convergence sets the minimum origination and arrival LSA parameters to zero (0), allowing rapid route calculation. A higher convergence level can result in occasional loss of OSPF adjacency. Convergence level 1 meets most convergence requirements. The higher the number, the faster the convergence, and the more frequent the route calculations and updates. This impacts CPU utilization and may impact adjacency stability in larger topologies. NOTE: Select the higher convergence levels only after checking with Dell Technical Support. Layer 3 345