Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 328

ethernet 1/1/5 has IP address on subnet 100.0.0.0/8, and if 10.1.1.0/24 recursively resolves to 100.1.1.1, the system installs the static route: • When the interface goes down, OS10 withdraws the route. • When the interface comes up, OS10 reinstalls the route. • When the recursive resolution is broken, OS10 withdraws the route. • When the recursive resolution is satisfied, OS10 reinstalls the route. Address resolution protocol ARP runs over Ethernet and enables end stations to learn the MAC addresses of neighbors on an IP network. Using ARP, OS10 automatically updates the ARP cache table which maps the MAC addresses to their corresponding IP addresses. The ARP cache enables dynamically learned addresses to be removed after a configured period. Configure static ARP entries You can manually configure static entries in the ARP mapping table. Dynamic ARP is vulnerable to spoofing. To avoid spoofing, configure static entries. Static entries take precedence over dynamic ARP entries. 1 Configure an IP address and MAC address mapping for an interface in INTERFACE mode. ip arp ip-address mac address • ip-address-IP address in dotted decimal format-A.B.C.D. • mac address-MAC address in nnnn.nnnn.nnnn format These entries do not age, and you can only remove them manually. To remove a static ARP entry, use the no arp ip-address command. Configure static ARP entries OS10(config)# interface ethernet 1/1/6 OS10(conf-if-eth1/1/6)# ip arp 10.1.1.5 08:00:20:b7:bd:32 View ARP entries OS10# show ip arp interface ethernet 1/1/6 ! interface ethernet1/1/6 ip arp 10.1.1.5 08:00:20:b7:bd:32 no shutdown ! IPv4 routing commands clear ip route Clears the specified routes from the IP routing table. Syntax Parameters clear ip route {* | A.B.C.D/mask} • *-Specify to clear the entire IP routing table. This option refreshes all the routes in the routing table and the traffic flow is affected for all the routes in the switch. 328 Layer 3