Configure multi-interface ARP on S series switches

After multi-interface ARP is enabled on an S series switch (except the S1700 switch�?, the switch can send packets to the IP address of a network load balancing (NLB) cluster through all outbound interfaces connected to the NLB servers. By default, no MAC address entry is configured for multiple outbound interfaces.
1. You can configure multi-interface ARP for the first time in the system view. After creating an MAC address entry that corresponds to multiple outbound interfaces, you can add or delete specific interfaces in corresponding interface views.
- In the system view, run the mac-address multiport mac-address interface { interface-type interface-number1 [ to interface-type interface-number2 ] } &<1-10> vlan vlan-id command to configure a MAC address entry that corresponds to multiple outbound interfaces.
The specified interfaces must be on the same card. The value of interface-number2 must be greater than the value of interface-number1. interface-number1 and interface-number2 specify a range of interfaces.
- In an interface view, run the mac-address multiport mac-address vlan vlan-id command to configure the MAC address of the interface as the multi-interface MAC address.
2. Run the arp static ip-address mac-address command to configure a short static ARP entry. The value of mac-address must be the same as the multi-interface MAC address configured in step 1.
For example, configure a MAC address entry that corresponds to multiple outbound interfaces on Switch:
[Switch] mac-address multiport 03bf-0a80-f6fc interface gigabitethernet 1/0/1 to gigabitethernet 1/0/3 vlan 10
Configure a static ARP entry on Switch.
[Switch] arp static 10.128.246.252 03bf-0a80-f6fc
Note: Multi-interface ARP is supported in V200R003 and later versions, and is not supported by S1720, S2720, S275x, S5700LI/S5700SI/S5700EI, or S5720SI.

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