Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 1875

Router Discovery Protocol Commands Dell EMC Networking N3000E-ON/N3100-ON/N3200-ON Series Switches Routers can be configured to periodically send router discovery messages to announce their presence to locally attached hosts. The router discovery message advertises one or more IP addresses on the router that hosts can use as their default gateway. Hosts can send a router solicitation message asking any router that receives the message to immediately send a router advertisement, so that the host does not have to wait for the next periodic message. Router discovery enables hosts to select from among multiple default gateways and switch to a different default gateway if an initially designated gateway goes down. ip irdp Use the ip irdp command in Interface Configuration mode to enable Router Discovery on an interface. Use the no form of the command to disable Router Discovery. Syntax ip irdp [multicast | holdtime seconds | maxadvertinterval seconds | minadvertinterval seconds | preference number | address address] no ip irdp holdtime • multicast-Configure the address that the interface uses to send the router discovery advertisements to be 224.0.0.1, the all-hosts IP multicast address. Use the no form of the command to use 255.255.255.255, the limited broadcast address. • holdtime seconds-Integer value in seconds of the holdtime field of the router advertisement sent from this interface. (Range: 4-9000 seconds) • maxadvertinterval seconds-Maximum time in seconds allowed between sending router advertisements from the interface. (Range: 4 or the minimum advertisement interval, whichever is greater, and 1800 seconds). Layer 3 Routing Commands 1875