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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Cisco MGX 8220 System Overview
Thus, the Cisco MGX 8220 shelf supports aggregation of traffic up to 80 T1 or E1 access ports or up
to 1240 64-Kbps subscribers, onto a single T3, E3, or OC-3c trunk, using only a single port on the Cisco
BPX switch.
Figure 1-2 shows the Cisco MGX 8220 switch relationship.
Figure 1-2 Cisco MGX 8220/Cisco BPX Switch Relationship
Remote Locations
For locations with limited switching requirements, the Cisco MGX 8220 can be physically remote from
the Cisco BPX 8600 series switch using IMA trunk machines as shown in Figure 1-3.
Figure 1-3 Remote Cisco MGX 8220 Configuration
Standalone Cisco MGX 8220 Edge Concentrator
The Cisco MGX 8220 edge concentrator is not limited to attachment to the Cisco BPX 8600 series
switch. In standalone operation, the Cisco MGX 8220 trunk can attach to any ATM switch to provide
service aggregation.
Service Interfaces
The Cisco MGX 8220 supports the following services and interfaces:
• Frame Relay UNI/NNI
–
56 kbps, nx64 kbps, T1, E1, HSSI, X.21
–
Frame Relay to ATM network and service internetworking
• High-speed Frame Relay
• ATM Frame UNI
–
56 kbps, nx64 kbps, T1, E1, HSSI, X.21
• ATM UNI/NNI
–
T1, E1, nxT1 (IMA), nxE1 (IMA)
T1, E1, T3, or
HSSI/X.21
Service Interface
Lines
BPX 8620
Broadband ATM Service
T3, E3 or SONET ATM
Feeder Connection
S6176
MGX 8220
T1, E1 or T3
Service
Interface
Lines
Long Distance
IMA Trunk
BPX 8620
Broadband ATM Service
S6177
MGX 8220
MGX 8220