Alcatel-Lucent 7750 SR OS Service Manual page 427

Virtual Private LAN Services
All VPLS functionality available on the 7750 SR is applicable to FR and ATM-delimited VPLS
SAPs. For example, bridged PDUs received over ATM SAP can be tunneled through or dropped;
all Forwarding Information Base functionality applies; packet level QoS and MAC filtering
applies; etc. Also, split horizon groups are applicable to ATM SAPs terminating on VPLS. In other
words, frame forwarding between ATM SAPs, also referred to as VCI-to-VCI forwarding, within
the same group is disabled.
The Ethernet pseudowire is established using Targeted LDP (TLDP) signaling and uses the ether,
vlan, or vpls VC type on the SDP. The SDP can be an MPLS or a GRE type.
7750 SR OS Services Guide Page 427