Alcatel-Lucent 7750 SR OS Service Manual page 740

IES Service Configuration Commands
When arp-populate is enabled, the system will not send out ARP requests for hosts that are not in the
ARP cache. Only statically configured and DHCP learned hosts are reachable through an IP interface
with arp-populate enabled. The arp-populate command can only be enabled on IES and VPRN
interfaces supporting Ethernet encapsulation.
Use the no form of the command to disable ARP cache population functions for static and dynamic
hosts on the interface. All static and dynamic host information for this interface will be removed from
the system's ARP cache.
Default
not enabled
host
Syntax [no] host ip ip-address [mac ieee-address]] [subscriber sub-ident-string] [sub-profile sub-
profile-name] [sla-profile sla-profile-name] [ancp-string ancp-string]
no host {[ip ip-address] [mac ieee-address]}
no host all
Context config>service>ies>if>sap
config>service>ies>sub-if>grp-if>sap
Description
This command creates a static subscriber host for the SAP. Static subscriber hosts may be used by the
system for various purposes. Applications within the system that make use of static host entries
include anti-spoof filters and ARP cache population.
Multiple static hosts may be defined on the SAP. Each host is identified by either a source IP address,
a source MAC address or both a source IP and source MAC address. Every static host definition must
have at least one address defined, IP or MAC.
Static hosts can exist on the SAP even with anti-spoof and ARP populate features disabled. When
enabled, each feature has different requirements for static hosts.
anti-spoof
arp-populate
Attempting to define a static subscriber host that conflicts with an existing DHCP Lease State Table
entry will fail.
Use the no form of the command to remove a static entry from the system. The specified ip-address
and mac-address must match the host's exact IP and MAC addresses as defined when it was created.
When a static host is removed from the SAP, the corresponding anti-spoof entry and/or ARP cache
entry is also removed.
Default
none
Parameters
ip ip-address — Specify this optional parameter when defining a static host. The IP address must be
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— When enabled, this feature uses static and dynamic host information to populate entries
into an anti-spoof filter table. The anti-spoof filter entries generated will be of the same type as
specified in the anti-spoof type parameter. If the SAP anti-spoof filter is defined as ip, each static
host definition must specify an IP address. If the SAP anti-spoof filter is defined as ip-mac, each
static host definition must specify both an IP address and MAC address. If definition of a static
host is attempted without the appropriate addresses specified for the enabled anti-spoof filter, the
static host definition will fail.
— When enabled, this feature uses static and dynamic host information to populate
entries in the system ARP cache.
specified for anti-spoof ip, anti-spoof ip-mac and arp-populate Only one static host may be
configured on the SAP with a given IP address.
7750 SR OS Services Guide