Alcatel-Lucent 7750 SR Manual page 1302

VPRN Service Configuration Commands
host
Syntax [no] host {[ip ip-address [mac ieee-address]} [subscriber sub-ident-string] [sub-profile
sub-profile-name] [sla-profile sla-profile-name]
no host {[ip ip-address] [mac ieee-address]}
Context config>service>vprn>if>sap
Description This command creates a static host for the SAP. Applications within the system that make use of static
host entries include anti-spoof, and source MAC population into the VPLS forwarding database.
Multiple static hosts can be defined on the SAP. Each host is identified by a source IP address, a
source MAC address, or both a source IP and source MAC address. When anti-spoof in enabled on
the SAP, the host information will be populated into the SAP's anti-spoof table, allowing ingress
packets matching the entry access to the SAP. When the MAC address exists in the host definition, the
MAC address is populated into the VPLS forwarding database and associates it with the SAP. The
static host definition overrides any static MAC entries using the same MAC and prevents dynamic
learning of the MAC on another interface.
Defining a static host identical to an existing static host has no effect and will not generate a log or
error message.
Every static host definition must have at least one address defined, IP or MAC.
Static hosts may exist on the SAP even with anti-spoof and arp-populate (VPRN) features disabled.
When enabled, each feature has different requirements for static hosts.
anti-spoof — When enabled, this feature uses static and dynamic host information to populate entries
arp-populate — When enabled, this feature uses static and dynamic host information to populate
fdb-populate — This is an implicit feature that uses the static host definition as a static MAC in the
The no form of the command removes 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.
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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 mac, each
static host definition must specify a MAC address. 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.
entries into the system's ARP cache. This is only available on the VPRN service SAPs. Both a
MAC address and IP address are required to populate an ARP entry in the system. If definition of
a static host is attempted without both a MAC and IP address specified when arp -populate is
enabled, the static host definition will fail.
VPLS forwarding database. It cannot be enabled or disabled and has no effect on the ability to
create static hosts without a MAC address specified. When a MAC address is specified for a
static host, it will automatically be populated into the VPLS forwarding database associated with
the SAP on which the host is created. The static host MAC address will override any static MAC
entries using the same MAC and prevent dynamic learning of the MAC on another interface.
Existing static MAC entries with the same MAC address as a static host are marked as inactive
but not deleted. If all static hosts are removed from the SAP, the static MAC may be populated.
New static MAC definitions for the VPLS instance may be created while a static host exists
associated with the static MAC address.
7750 SR OS Services Guide