Alcatel-Lucent 7750 SR OS Service Manual page 472

VPLS Service Configuration Commands
Parameters
group-name — Specifies the name of the split horizon group to which the SDP belongs.
residential-group — Defines a split horizon group as a residential split horizon group (RSHG). Doing
Default
A split horizon group is by default not created as a residential-group.
restrict-protected-src
Syntax restrict-protected-src alarm-only
no restrict-protected-src
Context config>service>vpls>split-horizon-group
config>service>vpls>sap
Description
This command indicates how the agent will handle relearn requests for protected MAC addresses.
While enabled all packets entering the configured SAP, or any SAP that is part of the configured split
horizon group (SHG) will be verified not to contain a protected source MAC address. If the packet is
found to contain such an address the packet will be discarded, a trap will be generated and the SAP
will be made operationally down. The SAP must be shutdown and enabled (no shutdown) for this
state to be cleared. Notice that the use of restrict-protected-src under the SAP is designed only to
allow this capability for SAPs that are not part of a SHG. If a SAP is part of a SHG that has restrict-
protected-src enabled the SAP will be restricted.
Default
no restrict-protected-src
restrict-unprotected-dst
Syntax restrict-unprotected-dst alarm-only
no restrict-unprotected-dst
Context
config>service>vpls>split-horizon-group
config>service>vpls>sap
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so entails that:
a) SAPs which are members of this Residential Split Horizon Group will have:
– Double-pass queuing at ingress as default setting (can be disabled)
– STP disabled (can not be enabled)
– ARP reply agent enabled per default (can be disabled)
– MAC pinning enabled per default (can be disabled)
– Besides the multicast downstream also broadcast packets are discarded thus also blocking
the unknown, flooded traffic
b) Spoke SDPs which are members of this Residential Split Horizon Group will have:
– Downstream multicast traffic supported
– Double-pass queuing is not applicable
– STP is disabled (can be enabled)
– ARP reply agent is not applicable (dhcp-lease-states are not supported on spoke SDPs)
– MAC pinning enabled per default (can be disabled)
7750 SR OS Services Guide