A separate queue exists on each line card for multicast traffic, which is combined with an algorithm that allows partial multicast scheduling per switch fabric cycle, and works with scheduling of unicast traffic to achieve optimal utilization of the crossbar. This is a special-function line card that runs routing protocols and calculates forwarding tables, and distributes these tables to the line cards. Quality of Service. Virtual output queues are combined with Cisco QoS toolkit components such as DCAR to provide a variety of QoS methods. High levels of fault tolerance are achieved by allowing functional redundancy throughout key components of the GSR including power supplies, fans, GSR route processors, and switch fabric planes.
All parts are hot-swappable.
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