Virtual Private LAN Services
7750 SR OS Services Guide Page 465
When the arp-populate and lease-populate commands are enabled on an IES interface, the ARP
table entries will no longer be dynamically learned, but instead by snooping DHCP ACK message
from a DHCP server. In this case the configured arp-timeout value has no effect.
The default value for arp-timeout is 14400 seconds (4 hours).
The no form of this command restores arp-timeout to the default value.
Default 14400 seconds
Parameters seconds — The minimum number of seconds a learned ARP entry will be stored in the ARP table,
expressed as a decimal integer. A value of zero specifies that the timer is inoperative and learned
ARP entries will not be aged.
Values 0 — 65535
mac
Syntax mac ieee-address
no mac
Context config>service>vpls>interface
Description This command assigns a specific MAC address to an IP interface.
For Routed Central Office (CO), a group interface has no IP address explicitely configured but
inherits an address from the parent subscriber interface when needed. For example, a MAC will
respond to an ARP request when an ARP is requested for one of the IPs associated with the subscriber
interface through the group interface.
The no form of the command returns the MAC address of the IP interface to the default value.
Default The physical MAC address associated with the Ethernet interface that the SAP is configured on (the
default MAC address assigned to the interface, assigned by the system).
Parameters ieee-address — Specifies the 48-bit MAC address for the static ARP in the form aa:bb:cc:dd:ee:ff or
aa-bb-cc-dd-ee-ff where aa, bb, cc, dd, ee, and ff are hexadecimal numbers. Allowed values are
any non-broadcast, non-multicast MAC and non-IEEE reserved MAC addresses.
static-arp
Syntax static-arp ip-address ieee-address
no static-arp ip-address [ieee-address]
Context config>service>vpls>interface
Description This command configures a static address resolution protocol (ARP) entry associating a subscriber IP
address with a MAC address for the core router instance. This static ARP appears in the core routing
ARP table. A static ARP can only be configured if it exists on the network attached to the IP
interface.
If an entry for a particular IP address already exists and a new MAC address is configured for the IP
address, the existing MAC address will be replaced with the new MAC address.
The no form of the command removes a static ARP entry.
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