Nortel Passport 8250, Command Line Interface Manual

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Chapter 3 Provisioning ports and connections 37
Passport 8250 Command Line Interface Guide R2.2
CBR clocking
The following rules apply for CBR clocking:
• SRTS CBR clocking is for DS-1/E1 unstructured services
• Synchronous CBR clocking is for DS-1/E1 unstructured and structured
services
• SRTS and synchronous CBR clock modes can be used for different ports
on a service board
Using the map command
The map command creates DS-1/E1 unstructured, structured Basic, and
structured CAS connections. The syntax of the command is:
map <port#i>[,<#j>] [<time slot>] <VPI#k> <VCI#l>
[cdvt=<value>] [PartialFill=<value>]
[MaxBuffSize=<value>] [CAS=<cas type>]
[cbrclock=<cbrClockMode>]
where
<port#i>
is the first port number
[,<#j>]
is the last port number in a range of port numbers
[<time slots>]
is the bitmap of the assigned time slots for the
connection in hexadecimal format
<VPI#k>
is the VPI number assigned to the ports
<VCI#l>
is the VCI number assigned to the ports. The VCI number
increments by one for each port.
[cdvt=<value>]
is the cell delay variation tolerance (cdvt) that Passport
8250 tolerates in the cell stream without producing errors on the CBR
interface. It is measured in 10 microsecond intervals.
[PartialFill=<value>]
is the number of octets that is used in an ATM
cell before the ATM cell transmits onto the ATM network