INS_CNGE3FE8MS[POE][HO] Rev. 11.7.17 PAGE 123
INSTRUCTION MANUAL CNGE3FE8MS[POE][HO]
TECH SUPPORT: 1.888.678.9427
Object Description
Size The TST frame size. This is entered as the wanted size (in bytes) of a un-tagged frame containing
TST OAM PDU - including CRC (four bytes).
Example when 'Size' = 64=> Un-tagged frame size = DMAC(6) + SMAC(6) + TYPE(2) + TST PDU
LENGTH(46) + CRC(4) = 64 bytes
The transmitted frame will be four bytes longer for each tag added - 8 bytes in case of a tunnel
EVC.
There are two frame MAX sizes to consider.
Switch RX frame MAX size: The MAX frame size (all inclusive) accepted on the switch port of
96009600 Bytes
CPU RX frame MAX size: The MAX frame size (all inclusive) possible to copy to CPU of 15261526
Bytes
Consider that the Peer MEP must be able to handle the selected frame size. Consider that in order
to calculate the 'RX rate' a received TST PDU must be copied to CPU
Warning will be given if selected frame size exceeds the CPU RX frame MAX size
Frame MIN Size is 64 Bytes.
Pattern The 'empty' TST PDU has the size of 12 bytes. In order to achieve the configured frame size a data
TLV will be added with a pattern.
Example when 'Size' = 64=> Un-tagged frame size = DMAC(6) + SMAC(6) + TYPE(2) + TST PDU
LENGTH(46) + CRC(4) = 64 bytes
The TST PDU needs to be 46 bytes so a pattern of 46-12=34 bytes will be added.
All Zero: Pattern will be '00000000'
All One: Pat ter n w ill be '11111111'
10101010: Pattern will be '10101010'
Test Signal State
TX frame count The number of transmitted TST frames since last 'Clear'.
RX frame count The number of received TST frames since last 'Clear'.
RX rate The current received TST frame bit rate in Kbps. This is calculated on a 1 s. basis, starting when
first TST frame is received after 'Clear'. The frame size used for this calculation is the first received
after 'Clear'
Test time The number of seconds passed since first TST frame received after last 'Clear'.
Clear This will clear all Test Signal State. Transmission of TST frame will be restarted. Calculation of 'Rx
frame count', 'RX rate' and 'Test time' will be started when receiving first TST frame.
Client
Configuration
Only a Port MEP is able to be a server MEP with flow configuration. The Priority in the client flow is
always the highest priority configured in the EVC.
Domain The domain of the client layer flow.
For a MPLS MEP, the client domain can only be EVC or LSP. For a non-MPLS MEP, the client flow
domain can not be LSP. For a non-MPLS MEP, the client flow domain can not be mixed VLAN and
EVC.
Instance Client layer flow instance numbers.
Level Client layer level - AIS and LCK PDU transmitted in this client layer flow will be on this level.
AIS Prio The priority to be used when transmitting AIS in each client flow. Priority resulting in highest
possible PCP can be selected.
LCK Prio The priority to be used when transmitting LCK in each client flow. Priority resulting in highest
possible PCP can be selected.
AIS
Enable Insertion of AIS signal (AIS PDU transmission) in client layer flows, can be enable/disabled.
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