The switch fabric for the EX8208 switch, which serves as the central non-blocking matrix through which all network data passes, is distributed across three elements: the dual-redundant SRE modules and the dedicated Switch Fabric module. Working together, the SRE and Switch Fabric modules deliver the necessary switching capacity for the EX8208 switch; when the second SRE module is present, the additional switch fabric serves in hot-standby mode, providing full 2+1 switch fabric redundancy. The Switch Fabric modules are hot-swappable and field-replaceable, enabling failed units to be easily replaced without service interruption.The two active, load-sharing switch fabrics on the SRE and Switch Fabric modules collectively deliver up to 320 Gbps (full-duplex) of packet-data bandwidth per line-card slot, providing sufficient capacity to support future 100-Gigabit Ethernet deployments without requiring any forklift upgrades or changes to the network infrastructure. The EX8208 switch backplane is designed to support a maximum fabric bandwidth of 6.2 Tbps.