ZyXEL P-663H-51 Mode D'Emploi

 Chapter 4 Device Information

P-663H-51 User’s Guide

In Errors

How many cells the ZyXEL Device dropped because of uncorrectable HEC errors. 

In Unknown

How many received cells the ZyXEL Device discarded during cell header validation. 
This includes cells with invalid cell header patterns or unrecognized VPI/VCI values. If 
the ZyXEL Device is set to discard cells with undefined PTI values, they are also 
included in this count. 

In Hec Errors

How many cells the ZyXEL Device received with HEC errors in the ATM cell headers. 

In Invalid Vpi 
Vci Errors

How many cells the ZyXEL Device received with an unregistered VCC (Virtual 
Channel Connection) address. 

In Port Not 
Enable Errors

How many cells the ZyXEL Device received on disabled ports. 

In PTI Errors

How many cells the ZyXEL Device received with an ATM header that had a Payload 
Type Indicator (PTI). 

In Idle Cells 

How many idle cells the ZyXEL Device received.

In Circuit Type 
Errors

How many idle cells the ZyXEL Device received with illegal circuit types. 

In OAM RM 
CRC Errors

How many Operational, Administration and Maintenance Function 5 (OAM) and RM 
(Rate Management) cells the ZyXEL Device received with a Cyclic Redundancy 
Check error.

In GFC Errors

How many cells the ZyXEL Device received with non-zero GFCs. 

AAL5 Interface 
Statistics

These are statistics for the AAL5 interface.

In Octets

How many AAL5/AAL0 CPCS PDU octets the ZyXEL Device received. 

Out Octets

How many AAL5/AAL0 CPCS PDU octets the ZyXEL Device transmitted. 

In Ucast Pkts

How many received AAL5/AAL0 CPCS PDUs the ZyXEL Device passed to higher 
layers. 

Out Ucast Pkts How many AAL5/AAL0 CPCS PDUs the ZyXEL Device received for transmission 

from higher layers. 

In Errors

How many AAL5/AAL0 CPCS PDUs the ZyXEL Device received that contained 
errors. Including CRC-32 errors, SAR timeouts, and oversised SDUs. 

Out Errors

How many AAL5/AAL0 CPCS PDUs the ZyXEL Device could not transmit due to 
errors. 

In Discards

How many AAL5/AAL0 CPCS PDUs the ZyXEL Device discarded due to input buffer 
overflows. 

Out Discards

How many non-errored AAL5/AAL0 CPCS PDUs the ZyXEL Device discarded. (For 
example, the ZyXEL Device might do this to free up buffer space.) 

AAL5 VCC 
Statistics

These are statistics for the ATM VCC (Virtual Channel Connection) interface.

VPI/VCI

A VCC (Virtual Channel Connection) is a VPI and VCI combination. Each row in this 
table represents a VCC. This field displays the Virtual Path Identifier, and Virtual 
Channel Identifier of each VCC.

CRC Errors

How many PDUs the ZyXEL Device received on the VCC with CRC-32 errors. 

SAR Timeouts

How many partially-reassembled PDUs the ZyXEL Device discarded because they 
were not fully reassembled during the allotted time period. This value is zero if the re-
assembly timer is not supported.

Oversized 
SDUs

How many PDUs with corresponding SDUs that were too large (so the ZyXEL Device 
discarded them). 

Table 7   Device Info > Statistics > ATM (continued)