Administrator Guide

￭ For a port extender (PE) Gigabit Ethernet interface, enter the keyword peGigE then the pe-id/stack-unit /port-id
information. The pe-id is a port-extender ID number from 0 to 255; the stack-unit unit-number is from 0 to 7; and the
port-id range is from 1 to 48.
￭ For a port extender 10-Gigabit Ethernet interface, enter the keyword peTenGigE then the pe-id / stack-unit / port-
id information. The pe-id range is from 0 to 255; the stack-unit unit-number range is from 0 to 7; and the port-id
range is 25 to 28 or 49 to 52 depending on the PE.
These entries do not age and can only be removed manually. To remove a static ARP entry, use the no arp ip-address
command.
To view the static entries in the ARP cache, use the show arp static command in EXEC privilege mode.
Dell#show arp
Protocol Address Age(min) Hardware Address Interface VLAN CPU
--------------------------------------------------------------------------------
Internet 10.1.2.4 17 08:00:20:b7:bd:32 Ma 1/0 - CP
Dell#
Configuring ARP Inspection Trust
Use the arp-inspection-trust command to specify a port or an interface as trusted so that ARP frames are not validated
against the binding table. By default, this feature is disabled.
● Enable ARP learning via gratuitous ARP.
INTERFACE Mode
INTERFACE PORT-CHANNEL Mode
INTERFACE PORT EXTENDER Mode
arp-inpsecton-trust
Dell(conf)#int peGigE 0/0/0
Dell(conf-if-pegi-0/0/0)# arp-inpsection-trust
Configuring ARP Timeout
Use the arp backoff-timer command for setting the exponential timer for resending unresolved ARPs.
● Set the exponential timer for resending unresolved ARPs.
CONFIGURATION Mode
arp backoff-time seconds / minutes
Enter the number of seconds an ARP entry is black-holed. The range is from 1 to 3600. The default is 30 minutes.
Enter the number of minutes an ARP entry is balck-holed. The range is from 0 to 35790. The default is 4 hours.
Dell(conf)#arp backoff-time minutes
Enabling Proxy ARP
By default, Proxy ARP is enabled. To disable Proxy ARP, use the no ip proxy-arp command in the interface mode.
To re-enable Proxy ARP, use the following command.
● Re-enable Proxy ARP.
INTERFACE mode
ip proxy-arp
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IPv4 Routing