Transparent; Double Tag - ADTRAN OPTI-6100 Installation Manual

Transparent

This mode is a one-to-one mapping from the Ethernet port to the configured VCG. No Ethernet
packet modification is done.
Provisioning options affected by this mode are as follows:
Peak Rate: This controls the maximum supported rate/EIR allowed from the customer port,
♦
limited by the provisioned/mapped VCG size, and rounded to the nearest 64 kbps
increment. This drives Pause Frame port throttling (if Pause Frame is enabled). The default
is Full Rate.
Burst Size: This specifies the Excess Burst Size (EBS) in kilobits for the Peak Rate. The
♦
recommended setting is the maximum, 4194 kb, unless the service provider wants a
smaller EBS supported. Burst size is rounded up to the nearest supported burst size. The
default is 64 kb.

Double Tag

This mode supports Ethernet Virtual Private Line (EVPL) by inserting a service provider VLAN
tag into each received Ethernet frame before mapping to a VCG. The service provider tag is
stripped in the VCG-to-Ethernet direction. This is a port-based mapping, so all traffic from a port
can only be mapped to the single VCG. Multiple ports can be multiplexed over a single VCG.
Provisioning options affected by this mode are as follows:
Peak Rate: The maximum supported rate/EIR allowed from the customer port, limited by
♦
the provisioned/mapped VCG size, and rounded up to the nearest 64 kbps increment. This
drives the Pause Frame port throttling (if Pause Frame is enabled). The default is Full Rate.
Burst Size: Excess Burst Size (EBS) in kilobits for the Peak Rate. The recommended setting
♦
is the maximum, 4194 kb, unless the service provider wants a smaller EBS supported.
Burst size is rounded up to the nearest supported burst size. The default is 64 kb. In
Double Tag mode, VLAN Uplink specifies which VCG to map this port.
Committed Rate: The rate to map into the high priority VCG queue, based on VLAN p-bits.
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This should equal Peak Rate, if no rate-based re-queuing is desired. The default is zero.
VLAN Uplink Tag: The VLAN ID to insert as the service provider tag. This must be unique
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per VCG uplink. The default is the Ethernet Port number.
VLAN Uplink: The VCG/uplink to which this port is mapped. This is not set by default.
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Protocol ID: The TYPE value to use in the inserted service provider VLAN Tag ID. The default
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value is 0×9100.
61184500L1-5L
Appendix C, Advanced Ethernet Provisioning - Gigabit Ethernet
C-9