Brocade Communications Systems FastIron SX 1600, Руководство по настройке, Страница: 569 / 593

Configuring static ARP for Multi-VRF
The interface associated with an ARP entry determines to which VRF the ARP entry belongs.
An ARP entry is defined by the following parameters:
• IP address
• MAC address
• Type
• Interface
1. The following example illustrates how to configure static ARP on default VRFs on an Ethernet interface.
device(config)# arp 192.168.1.100 0000.2344.2441 eth 1/7/1
2. The following example illustrates how to configure static ARP on nondefault VRFs.
NOTE
The arp command can be used to configure static-ARP entries on a nondefault VRF interface. The VRF command
does not require an ARP index before a static-ARP is configured. The arp command is available in the address-family
mode for a particular VRF.
The arp command is backward compatible from FastIron release 08.0.00a, which uses a new command format. In releases
prior to FastIron release 08.0.00a, static-ARP needed an index. For FastIron 08.0.00a and later releases, FastIron accepts the
use of indexes as well as the new command without the index.
device(config)#
device(config)# vrf customer-1
device(config-vrf-customer-1)# address-family ipv4
device(config-vrf-customer-1-ipv4)# arp 1.1.1.1 0004.8044.5566 ethernet 1/7/8
device(config-vrf-customer-1-ipv4)# exit-address-family
device(config-vrf-customer-1)# exit-vrf
device(config)#
Configuring additional ARP features for Multi-VRF
This section discusses options for configuring proxy ARP and ARP rate limiting.
Proxy ARP allows a Layer 3 switch to answer ARP requests from devices on one subnet on behalf of devices in another network. Proxy
ARP is configured globally and can be further configured per interface. Interface-level configuration overrides the global configuration.
With the proxy-arp command configured, a router does not respond to ARP requests for IP addresses in the same subnet as the
incoming ports. The local-proxy-arp command permits the router to respond to ARP requests for IP addresses within the same subnet
and to forward all traffic between hosts in the subnet. The local-proxy-arp command is an interface-level configuration that has no VRF-
related impact.
ARP rate limiting is configured globally and applies to all VRFs.
ARP age can be configured globally and on a Layer 3 interface. An ARP age timer configured on a Layer 3 interface overrides the global
configuration for ARP aging. The aging timer ensures that the ARP cache does not retain learned entries that are no longer valid.
To configure proxy ARP globally:
device(config)# proxy-arp
Configuring Multi-VRF
FastIron Ethernet Switch Layer 3 Routing
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