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Cisco WAN Manager User’s Guide
Version 10.5, Part Number 78-12945-01 Rev. D0, August 2003
Chapter7 Service Class Template Manager Functional Interaction
•EPD0: Early Packet Discard Threshold. The maximum threshold for CLP (0+1) cells. This value is
a percentage of the MAX_CELL THRESH for the connection. 1000000 is equal to 100%. Range
and value: 0-1000000.
•EFCI Threshold: Ex pl ic i t F or w ar d Congestion Indic ati on . The VC EFCI disca r d th r eshold. This
value is a percentage of MAX_CELL THRESH. 1000000 is equal to m100%. Range and values:
0-1000000.
Scaling: Displays information related to Service Scaling
•Service Type: The service type (i.e. CBR, VBR, ABR) to which the parameters apply.
•Service Category: The service category to which the serv ice type be long s. All ser vice type s that
belong to the same service categor y should be mapped to the same Class of Service Buffer. Access:
read only. Values: 0-65535.
•COS Scaling: Class of Service Scaling : Clas s of Se rvice Sc aling provi des a means o f scali ng thr ough
a set of extended parameters, which are gene ra lly pl atfo rm sp eci f ic, based on a set of st anda rd ATM
parameters passed to the VSI slave during connection set up.
•Interface Scaling: Allows the scal in g an d exch an g e o f in for m at io n be tw ee n connections.
ABR: Displays information related to the ABR Service Type
•Service Type: ABR (Available Bit Rate) serv ice ty pe and parameters.
•Service Category: The service category to which the serv ice type be long s. All ser vice type s that
belong to the same service categor y should be mapped to the same Class of Service Buffer. Access:
read only. Values: 0-65535.
•CI Control: Congestion Indicat o r i s a fiel d in an R M -c ell u s ed to c au s e t he so ur ce to d ecr ea se its
ACR (Allowed Cell Rate). The source s ets CI = 0 when it sends an RM cell. C= 1indicats EFCI has
been received on a previous data cell.
•Cut-Off RM Cells: Allows for variations in the RM-cell.
•VSVD: Virtual Source/ Virtual Destination. A VSVD is an ABR connection which may be divid ed
into two or more separately controlled ABR segments. Each ABR control segment, exce pt the first,
is sourced by a virtual source. S our ces a nd destinations are linked via bi-directional connections,
and each connection terminati on p o in t i s b ot h a s o u rce an d a de s tin at io n , a s our ce fo r da ta th at is
transmitting, and a destination for data that is receiving.
•ADTF: Allowed-cell-rate Decreas e Tim e Fa ct or/I n iti al -cell-rate Time-out. The time bet w een R M
cells before the allowable cell rate returns to the initial cell rate.
•RDF: Rate Decrease Factor: An AB R ser v ice parameter that controls the d ecr ea s e i n cel l
transmission rate.
•RIF: Rate Increase Factor. A percentag e i nc re ase in the allowable cell rate for an A B R c onnection
if the BRM cells do no t h a ve t he N 1 or C 1 bits set.
•NRM: Number RM. The maximum number of data cells that can be sent before sending an RM cell
on an ABR connection.
•TRM: Time RM/Minimal Adjustment Period. The maximum amount of time between RM cells on
an ABR connection.
•CDF: Cutoff Decrease Factor. CDF control s t he de cr eas e in ACR (A llow ed C el l r at e) , w h ich i s an
ABR service parameter, associ ate d w ith C RM (Cell Rate Margin), wh ic h is a measure of the
difference between the effective bandw idth allocation and the allo cation for sustainable rate in cells
per second.