Cisco Systems IGX 8400 Manual De Usuario
Trunk Cards 4-7
Universal Switching Module Enhanced
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The maximum throughput is 310 Mbps—two times the OC-3 (STM1) rate. This maximum
applies whether the back card is a 2-port or 4-port back card. In practical application, this
maximum rate means that most trunk applications with an OC-3 interface would use the 2-port
back card.
applies whether the back card is a 2-port or 4-port back card. In practical application, this
maximum rate means that most trunk applications with an OC-3 interface would use the 2-port
back card.
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The UXM-E supports ATM-to-Frame Relay network and service interworking.
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For the ABR connection types, the UXM-E supports EFCI marking, Explicit Rate Stamping, and
Virtual Source/Virtual Destination (VS/VD).
Virtual Source/Virtual Destination (VS/VD).
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The UXM-E supports Y-cable redundancy with hot standby for very fast switchover.
•
The front card has 128K cell buffers.
•
For statistics support, the UXM-E provides real-time statistics counters and interval statistics
collection for ports, lines, trunks, and channels.
collection for ports, lines, trunks, and channels.
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The UXM-E can form a logical trunk by grouping more than one T1 or E1 port. The name of this
(purchased) option is Inverse Multiplexing over ATM (IMA).
(purchased) option is Inverse Multiplexing over ATM (IMA).
•
The on-board diagnostics are loopback, self-test, and background.
UXM-E Interfaces
Table 4-4 is a list of the UXM-E back cards. Figure 4-3 shows the UXM-E front card. Table 4-5
defines all possible combinations for the states of the front card status LEDs (Fail, Active, and
Standby).
defines all possible combinations for the states of the front card status LEDs (Fail, Active, and
Standby).
Table 4-4
Back Cards for the UXM-E
Card Name
Card Description
BC-UAI-4-155-MMF
4-port multimode fiber 155 Mbps
BC-UAI-4-155-SMF
4-port single mode fiber 155 Mbps
BC-UAI-2-155-SMF
2-port single mode fiber 155 Mbps
BC-UAI-2-SMFXLR
2-port single mode fiber XLR
BC-UAI-4-SMFXLR
4-port single mode fiber XLR
BC-UAI-4-STM1E
4-port synchronous transport module-1E
BC-UAI-6-T3
6-port T3 back card
BC-UAI-3-T3
3-port T3 back card
BC-UAI-6-E3
6-port E3 back card
BC-UAI-3-E3
3-port E3 back card
BC-UAI-4-T1-DB-15
4-port T1 back card with DB-15 connector
BC-UAI-8-T1-DB-15
8-port T1 back card with DB-15 connector
BC-UAI-4-E1-DB-15
4-port E1 back card with DB-15 connector
BC-UAI-8-E1-DB-15
8-port E1 back card with DB-15 connector
BC-UAI-4-E1-BNC
4-port E1 back card with BNC connector
BC-UAI-8-E1-BNC
8-port E1 back card with BNC connector