Virtual Private LAN Services
7750 SR OS Services Guide Page 497
Description When this command is enabled, packets received on a SAP or or a spoke SDP with an unknown
source MAC address will be dropped only if the maximum number of MAC addresses for that SAP or
spoke SDP (see max-nbr-mac-addr on page 498) has been reached. If max-nbr-mac-addr has not been
set for the SAP or spoke SDP, enabling discard-unknown-source has no effect.
When disabled, the packets are forwarded based on the destination MAC addresses.
The no form of this command causes packets with an unknown source MAC addresses to be
forwarded by destination MAC addresses in VPLS.
Default no discard-unknown
limit-mac-move
Syntax limit-mac-move [blockable | non-blockable]
no limit-mac-move
Context config>service>vpls>sap
config>service>vpls>spoke-sdp
Description This command indicates whether or not the mac-move agent, when enabled using
config>service>vpls>mac-move or config>service>epipe>mac-move, will limit the MAC re-learn
(move) rate on this SAP.
Default SAPs and spoke SDPs are blockable
Parameters blockable — The agent will monitor the MAC re-learn rate on the SAP, and it will block it when the
re-learn rate is exceeded.
non-blockable — When specified, this SAP will not be blocked, and another blockable SAP will be
blocked instead.
mac-pinning
Syntax [no] mac-pinning
Context config>service>vpls>sap
config>service>vpls>spoke-sdp
config>service>vpls>mesh-sdp
Description Enabling this command will disable re-learning of MAC addresses on other SAPs within the VPLS.
The MAC address will remain attached to a given SAP for duration of its age-timer.
The age of the MAC address entry in the FIB is set by the age timer. If mac-aging is disabled on a
given VPLS service, any MAC address learned on a SAP/SDP with mac-pinning enabled will
remain in the FIB on this SAP/SDP forever.
Every event that would otherwise result in re-learning will be logged (MAC address; original-SAP;
new-SAP).
Note that MAC addresses learned during DHCP address assignment (DHCP snooping enabled) are
not impacted by this command. MAC-pinning for such addresses is implicit.
Default When a SAP or spoke SDP is part of a Residential Split Horizon Group (RSHG), MAC pinning is
activated at creation of the SAP. Otherwise MAC pinning is not enabled by default.
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