Ethernet Access Egress Queuing And Scheduling; Ethernet Sap-To-Sap; Ethernet Oam; Control Word - Alcatel-Lucent 7705 Service Manual

Ethernet Access Egress Queuing and Scheduling

Ethernet access egress queuing and scheduling is very similar to the Ethernet access ingress
behavior. Once the Ethernet pseudowire is terminated, traffic is mapped to up to eight
different forwarding classes per SAP. Mapping traffic to different forwarding classes is
performed based on the EXP bit settings of the received Ethernet pseudowire.
For more information on Ethernet access egress queuing and scheduling, refer to the 7705
SAR OS Quality of Service Guide.

Ethernet SAP-to-SAP

Ethernet VLLs can be configured with both endpoints (SAPs) on the same 7705 SAR. This
is referred to as Ethernet SAP-to-SAP or local Ethernet service. Ethernet SAP-to-SAP
provides local Ethernet switching between two Ethernet endpoints on the 7705 SAR.
An Ethernet SAP-to-SAP connection is set up on the 7705 SAR and a pseudowire is
configured between the two endpoints.
When the port encapsulation is null, there is no change to the VLAN tags on the ingress and
egress frame headers, if VLAN tags are present.
When the port encapsulation is dot1q, the VLAN tag is removed from the ingress frame
header and a new VLAN tag is inserted into the egress frame header. No VLAN tag is
inserted into the egress frame header if the SAP has a VLAN ID of 0.

Ethernet OAM

Ethernet VLL service supports Ethernet OAM functions for ETH-CFM according to the
802.1ag and Y.1731 standards, for Y.1731 Performance Management, and for EFM OAM
according to the 803.1ah standard. For more information, see
Y.1731) on page
Configuration Guide, and the "Ethernet OAM Capabilities" section in the 7705 SAR OS
OAM and Diagnostics Guide.

Control Word

Ethernet VLL supports an optional control word (CW). Refer to
on page 190
7705 SAR OS Services Guide
60, and refer to the "Ethernet OAM" section in the 7705 SAR OS Interface
for more information.
VLL Services
ETH-CFM (802.1ag and
Pseudowire Control Word
Page 161