MGX 8220 Shelf
Aggregation of Traffic into ATM Networks
Each MGX 8220 shelf connects to the BPX switch across a T3 or E3 ATM STI (Cisco Trunk Interface) to a BNI module on the BPX switch. Thus, the MGX 8220 shelf Release 3.0 supports aggregation of traffic up to 40 T1 or E1 access ports or up to 1240
In this release, the MGX 8220 shelf should normally be collocated with the BPX switch. Figure
Figure | MGX 8220/BPX Switch Relationship | |||||||
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Broadband
ATM service
H8239
For remote locations with limited bandwidth needs, the MGX 8220 shelf can be remoted from the BPX switch using IMA trunk machines. (See Figure
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40 T1 or E1 service interface lines
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BPX 8620
Broadand ATM service
H8240
The following sections provide an overview of the MGX 8220 shelf, the Release 3.0 cards, and management capabilities.
MGX 8220 Shelf
Physically, the MGX 8220 shelf consists of cards in a 19 inch rack mountable shelf.
The shelf can be powered either from a
The MGX 8220 shelf contains 16 slots where each slot can accommodate a front card and a back card. The front row is used for function modules, cards that perform more complex functions within the unit (for example, frame relay to ATM conversion). The back row is used for line modules, cards that provide interfaces to one or more transmission lines connected to the MGX 8220 shelf (for example, the trunk line to the BPX switch or an
Introduction