Specifications

5-10
Cisco ATM Services (AXSM) Configuration Guide and Command Reference for MGX Switches
Release 5.2, Part Number OL-6484-01 Rev. C0, September 2005
Chapter 5 AXSM Command Reference
addcon
Service Types, CDV, and CTD
Cell delay variation (CDV) and cell transfer delay (CTD) apply to specific service types. If you attempt
to configure these parameters for the wrong service type, the switch rejects the operation. Note that CTD
and CDV also serve as routing cost metrics along with the maximum route cost (see maxcost parameter).
To see how CDV and CTD apply to connection grooming, see the cnfrteoptthresh description.
VBR-nRT.1 50 50 N/A N/A dspmbsdft N/U dspcdvtdft
VBR-nRT.2 50 50 N/A N/A dspmbsdft N/U dspcdvtdft
VBR-nRT.3 50 50 N/A N/A dspmbsdft N/U dspcdvtdft
UBR.1 50 N/A N/A N/A dspmbsdft N/U dspcdvtdft
UBR.2 50 N/A N/A N/A dspmbsdft N/U dspcdvtdft
ABR 50 N/A 50 50 dspmbsdft N/U dspcdvtdft
CBR.2
1
50 N/A N/A N/A dspmbsdft N/U dspcdvtdft
CBR.3
2
50 N/A N/A N/A dspmbsdft N/U dspcdvtdft
1. CBR.2 will no longer be available in the near future. Use CBR.1 instead.
2. CBR.3 will no longer be available in the near future. Use CBR.1 instead.
Table 5-3 Ranges for PCR, SCR, and MCR for Each Line Type
Parameter Range
PCR Minimum PCR is 7 cells per second (cps).
Maximum PCR depends on the physical line on which the interface is configured:
Ranges are as follows:
• OC12: 7–1412832 cps
• OC3: 7–353208 cps
• T3: 7–96000 cps for PLCP or 7–104268 cps for ADM
• E3: 7–80000 cps
• T1: 7–3622 cps
• E1: 7–4528 cps
Default: Taken from the port SCT. The service type serves as an index in choosing a
PCR. The default PCR in the SCT is defined as a percent of the interface bandwidth.
SCR Minimum SCR is 7 cells per second (cps).
Maximum is limited to the PCR.
Default: Taken from SCT as a percentage of PCR. The AXSM-E and AXSM-XG have
a lower minimum of 3 cps, so if the derived default is less than 3, it is rounded off to
3 cps.
MCR Same as SCR.
Table 5-2 Default Traffic Parameters for AXSM (continued)
PCR SCR MCR ICR MBS MFS CDVT