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DL BW = Down Link Bandwidth
FL BWB A & A = Fabric Link Bandwidth between Aggregation & Access
UL BW = Uplink Bandwidth
BW = Bandwidth
Use the following table as guideline to select the appropriate 2– Tier Layer 2 VLT or Layer 3 with Resiliency (Routed VLT)
fabric design for a 1 Gb ToR VLT deployment.
NOTE: With a Layer 2 VLT fabric, the uplinks come from the first two switches on the aggregation side. For
information about tiers, see Deployment Topology.
Table 3. 2 Tier (1 Gb Downlinks)
DL
BW
ULBW Type DL Port
Range
AVG Access
VLTi
Capacity
FL
BWB A
& A
Possible Topologies
Core Aggregation Access
1 Gb 10 Gb Stacking 1 - 2640 2 * 40 Gb NA 40 Gb NA S4810 S60
(12G or 24G)
1 Gb 10 Gb Stacking 1 - 2640 2 * 40 Gb NA 40 Gb NA S4810 S55 (12G )
1 Gb 40 Gb Stacking 1 - 2496 2 * 40 Gb NA 40 Gb NA S4810 S60
(12G or 24G)
1 Gb 40 Gb Stacking 1 - 2496 2 * 40 Gb NA 40 Gb NA S4810 S55
(12G )
1 Gb 10 Gb Basic 1 - 2640 2 * 40 Gb NA 20 Gb NA S4810 S60
1 Gb 10 Gb Basic 1 - 2640 2 * 40 Gb NA 20 Gb NA S4810 S55
1 Gb 40 Gb Basic 1 - 2496 2 * 40 Gb NA 20 Gb NA S4810 S60
1 Gb 40 Gb Basic 1 - 2496 2 * 40 Gb NA 20 Gb NA S4810 S55
Use the following table as guideline to select the appropriate 3– Tier Layer 2 VLT or Layer 3 with Additional Resiliency
(Routed VLT) fabric design for a 1 Gb ToR VLT deployment.
AVG = Aggregation VLTi Capacity
CVG = Core VLTi Capacity
DL = Downlink
DL BW = Downlink Bandwidth
FL BWB C & A = FL BW between Core & Aggregation
FL BWB A & A = Fabric Link Bandwidth between Aggregation & Access
FL BW = Fabric Link Bandwidth
UL BW = Uplink Bandwidth
BW = Bandwidth
Table 4. 3 Tier ToR (1 Gb Downlinks) for Layer 2 and Layer 3 with Resiliency (Routed VLT)
DL
BW
UL
BW
Type DL Port
Range
CVG AVG Access
VLTi
Capacity
FL
BWB
C & A
FL
BWB
A & A
Possible Topologies
Core Aggregation Access
1 Gb 10 Gb Stacking 2641 -
32256
2 * 40
Gb
2 * 40
Gb
NA 80G 40 Gb Z9000 S4810 S55 (12G )
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