Alcatel-Lucent 7750 SR Manual page 1303

When a static host is removed from the SAP, the affect of its removal on the anti-spoof filter, ARP
cache or the VPLS forwarding database is also evaluated.
Default
There are no default static entries.
Parameters
ip ip-address — Specify this optional parameter when defining a static host. The IP address must be
mac mac-address — Specify this optional parameter when defining a static host. The MAC address
subscriber sub-ident-string — Specify this optional parameter to specify an existing subscriber
7750 SR OS Services Guide
specified for anti-spoof ip and anti-spoof ip-mac commands. Only one static host can be
configured on the SAP with a given IP address.
The following rules apply to configure static hosts using an IP address:
• Only one static host can be defined using a specific IP address.
• Defining a static host with the same IP address as a previous static host overwrites the previous
static host.
• If a static host has an IP address assigned, the MAC address for the host is optional (depending
on the features enabled on the SAP).
must be specified for anti-spoof mac and anti-spoof ip-mac. Multiple static hosts may be
configured with the same MAC address given that each definition is distinguished by a unique IP
address. The following rules apply to configuring static hosts using a MAC address:
• Multiple static hosts may share the same MAC address.
• Executing the host command with the same MAC address but a different IP address as an exist-
ing static host will create a new static host.
• If a static host has a MAC address assigned, the IP address for the host is optional (depending on
the features enabled on the SAP).
Values
8k static and dynamic hosts per 10G forwarding complex. 64k per system.
identification profile to be associated with the static subscriber host. The subscriber identification
profile is configured in the config>subscr-mgmt>sub-ident-policy context. The subscriber
information is used by the VPRN SAP arp-reply-agent to determine the proper handling of
received ARP requests from subscribers.
• For VPRN SAPs with
static subscriber host's sub-ident-string is used to determine whether an ARP request
received on the SAP is sourced from a host belonging to the same subscriber as the
destination host. When both the destination and source hosts from the ARP request are
known on the SAP and the subscriber identifications do not match, the ARP request may be
forwarded to the rest of the VPRN destinations.
If the static subscriber host's sub-ident string is not defined, the host is not considered to
belong to the same subscriber as another host on the SAP.
If source or destination host is unknown, the hosts are not considered to belong to the same
subscriber. ARP messages from unknown hosts are subject to anti-spoof filtering rules
applied at the SAP.
If sub-ident is not enabled on the SAP arp-reply-agent, subscriber identification matching is
not performed on ARP requests received on the SAP.
ARP requests are never forwarded back to the same SAP or within the receiving SAP's split
horizon group.
Virtual Private Routed Network Services
enabled with the optional sub-ident parameter, the
arp-reply-agent
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