Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 476
Enable passive interfaces, Command Syntax, Command Mode, Usage
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www.dell.com | support.dell.com Enable passive interfaces A passive interface is one that does not send or receive routing information. Enabling passive interface suppresses routing updates on an interface. Although the passive interface will neither send nor receive routing updates, the network on that interface will still be included in OSPF updates sent via other interfaces. Use the following command in the ROUTER OSPF mode to suppress the interface's participation on an OSPF interface. This command stops the router from sending updates on that interface. Command Syntax passive-interface {default | interface} Command Mode Usage CONFIG-ROUTEROSPF-id Specify whether all or some of the interfaces will be passive. Default enabled passive interfaces on ALL interfaces in the OSPF process. Entering the physical interface type, slot, and number enable passive interface on only the identified interface. • For a Gigabit Ethernet interface, enter the keyword GigabitEthernet followed by the slot/port information (e.g. passive-interface gi 2/1). • For a port channel, enter the keyword port-channel followed by a number from 1 to 255 for TeraScale and ExaScale (e.g. passive-interface po 100) • For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet followed by the slot/port information ( e.g. passive-interface ten 2/3). • For a VLAN, enter the keyword vlan followed by a number from 1 to 4094 (e.g. passive-interface vlan 2222). E-Series ExaScale platforms support 4094 VLANs with FTOS version 8.2.1.0 and later. Earlier ExaScale supports 2094 VLANS. The default keyword sets all interfaces on this OSPF process as passive. The passive interface can be removed from select interfaces using the no passive-interface interface command while passive interface default is configured. To enable both receiving and sending routing updates, enter the no passive-interface interface command. When you configure a passive interface, the show ip ospf process-id interface command (Figure 413) adds the words "passive interface" to indicate that hello packets are not transmitted on that interface. 476 | Open Shortest Path First (OSPFv2 and OSPFv3)
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