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Presentation_ID
25
Dual-FIA
8xNPs
Linecard
FIA0
FIA1
RSP1
Single-FIA
4xNPs
Linecard
Fabric Redundancy
Guarantee “0” packet loss during RSP failover and OIR
Crossbar
Fabric
ASIC
Crossbar
Fabric
ASIC
Crossbar
Fabric
ASIC
Crossbar
Fabric
ASIC
RSP0
Separate data and arbitration(control) paths
All fabric data channels run in active mode for extra fabric bandwidth and instant fabric
switch over
Both Arbiters work in parallel – both answer all requests, FIAs follow active Arbiter, FIAs
switch to backup if needed instant control path switchover
Arbiter switchover is controlled by low level hardware signalling
FIA
Arbiter
Arbiter
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