Cisco ASR 5000 Series, Руководство по установке, Страница: 38 / 317

ASR 5000 Hardware Platform Overview
▀ Line Cards
▄ ASR 5000 Installation Guide
38
Redundancy Crossbar Card (RCC)
The RCC uses 5 Gbps serial links to ensure connectivity between rear-mounted line cards and every non-SMC front-
loaded application card slot in the system. This creates a high availability architecture that minimizes data loss and
ensures session integrity. If a packet processing card were to experience a failure, IP traffic would be redirected to and
from the LC to the redundant packet processing card in another slot. Each RCC connects up to 14 line cards and 14
packet processing cards for a total of 28 bidirectional links or 56 serial 2.5 Gbps bidirectional serial paths.
The RCC provides each packet processing card with a full-duplex 5 Gbps link to 14 (of the maximum 28) line cards
placed in the chassis. This means that each RCC is effectively a 70 Gbps full-duplex crossbar fabric, giving the two
RCC configuration (for maximum failover protection) a 140 Gbps full-duplex redundancy capability.
The RCC located in slot 40 supports line cards in slots 17 through 23 and 26 through 32 (upper rear slots). The RCC in
slot 41 supports line cards in slots 33 through 39 and 42 through 48 (lower rear slots):
Figure 13. Redundancy Crossbar Card (RCC)
Table 10. RCC Callouts
Item Description
1 Card Ejector Levers —Use to insert/remove a card to and from the chassis.
2 Interlock Switch —In its Down position the interlock switch notifies the system to safely power down the card prior to
its removal.
3 Card Level Status LEDs —Show the status of the card.