Alcatel-Lucent 7750 SR - Page 1269

Virtual Private Routed Network Services
7750 SR OS Services Guide Page 1269
the MAC on another interface. Existing static MAC entries with the same MAC address as the
dynamic host are marked as inactive but not deleted. If all entries in the lease state table associated
with the MAC address are removed, the static MAC may be populated. New static MAC definitions
for the VPLS instance may be created while a dynamic host exists associated with the static MAC
address.
Default not enabled
Parameters nbr-of-entries — Defines the number lease state table entries allowed for this interface. If this
parameter is omitted, only a single entry is allowed. Once the maximum number of entries has
been reached, subsequent lease state entries are not allowed and subsequent DHCP ACK
messages are discarded.
Values 1 — 8000
match-circuit-id
Syntax [no] match-circuit-id
Context config>service>vprn>sub-if>grp-if>dhcp
Description This command enables Option 82 circuit ID on relayed DHCP packet matching. For routed CO, the
group interface DHCP relay process is stateful. When packets are relayed to the server the virtual
router ID, transaction ID, SAP ID, and client hardware MAC address of the relayed packet are
tracked.
When a response is received from the server the virtual router ID, transaction ID, and client hardware
MAC address must be matched to determine the SAP on which to send the packet out. In some cases,
the virtual router ID, transaction ID, and client hardware MAC address are not guaranteed to be
unique.
When the match-circuit-id command is enabled we use this as part of the key to guarantee
correctness in our lookup. This is really only needed when we are dealing with an IP aware DSLAM
that proxies the client hardware MAC address.
Default no match-circuit-id
option
Syntax [no] option
Context config>service>vprn>if>dhcp
config>service>vprn>sub-if>dhcp
config>service>vprn>sub-if>grp-if>dhcp
Description This command enables DHCP Option 82 (Relay Agent Information Option) parameters processing
and enters the context for configuring Option 82 sub-options.
The no form of this command returns the system to the default.
Default no option