To configure a group of SAPs in a VPLS service as a RSHG, add the residential-group parameter when creating the split horizon group. Traffic arriving on a SAP within an RSHG is not copied to other SAPs in the same split horizon group.
The following example displays a VPLS configuration with split horizon enabled:
*A:ALA-48>config>service>vpls# info
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split-horizon-group "DSL-group2" residential-group create
description "split horizon group for DSL - no broadcast supported"
exit
stp
shutdown
exit
sap 2/1/4:100 split-horizon-group "DSL-group2" create
description "SAP in RSHG"
exit
sap 2/1/4:200 split-horizon-group "DSL-group2" create
description "another SAP in the RSHG"
exit
no shutdown
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*A:ALA-48>config>service>vpls#