Table of Contents
Advertisement
Chapter
In this format, the virtual circuit is defined by
•
Slot specific position of the VPI
4-bit slot number position of the VPI
•
10-bit logical channel number (LCN) assigned as the VCI
•
The CC/FFCI/Supervisory field is used for ForeSight bits and a Supervisory bit.
Figure 2-14 Cisco MGX 8220 ATM Trunk Cell Format
10
1
2
3
CC/FFCI/Supv
4
5
6
53
Figure 2-15 CC, FFCI, EFCI, Supv, PTI, and CLP Fields
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
VPI
VCI
VPI
VCI
PTI/EFCI/CLP
see below
see below
HEC
Payload
CC
FFCI
Supv
1000
Local VPI
1
LCN<11:8>
2
Slot#
3
LCN<7:0>
CC/FFCI/Supv
PTI/EFCI/CLP
4
see below
see below
5
HEC
6
Payload
53
msb
PTI
EFCI bit if msb is set
Cisco MGX 8220 Installation and Configuration
Core Module Overview
CLP
2-17
Advertisement
Table of Contents
Troubleshooting
