Virtual Private LAN Services
7210 SAS M Services Guide Page 409
eth-ring — The keyword to create an instance of a Ring APS Control SAP or a Data SAP whose 
traffic is protected by a Ring APS Instance.
ring-index — Specifies the ring index of the Ethernet ring.
split-horizon-group group-name — Specifies the name of the split horizon group to which the SAP 
belongs.
discard-unknown-source
Syntax [no] discard-unknown-source
Context config>service>vpls>sap
Description When this command is enabled, packets received on a SAP 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 415) 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-source
config>service>vpls