Cisco FabricPath brings the benefits of routing protocols to Layer 2 network Ethernet environments. What are two advantages of using Cisco FabricPath technology? (Choose two)

The correct answer is B. Cisco FabricPath provides MAC address scalability with conversational learning. C. Loop mitigation is provided by the TTL field in the frame. FabricPath uses conversational MAC learning - switches only learn MAC addresses for active flows rather than flooding and learning all MACs, which dramatically improves MAC table scalability in large data center fabrics. FabricPath also adds a TTL field to its frame header…

Advanced Data Center Networks

Question

Options

ACisco FabricPath relies on OSPF to support Layer 2 forwarding between switches, which allows
BCisco FabricPath provides MAC address scalability with conversational learning.
CLoop mitigation is provided by the TTL field in the frame.
DCisco FabricPath is IETF-standard and is not used with Cisco products.
ECisco FabricPath technology is supported in all Cisco platforms and can replace legacy Ethernet

How the community answered

(30 responses)

A
3% (1)
B
90% (27)
E
7% (2)

Explanation

FabricPath uses conversational MAC learning - switches only learn MAC addresses for active flows rather than flooding and learning all MACs, which dramatically improves MAC table scalability in large data center fabrics. FabricPath also adds a TTL field to its frame header (similar to IP routing's TTL), which provides loop mitigation by discarding frames that have exceeded the hop count, eliminating the need for Spanning Tree Protocol. Option A is false because FabricPath uses a variant of IS-IS (not OSPF) for topology discovery. Option D is false because FabricPath is Cisco proprietary (specific to Nexus platforms). Option E is false because it is not supported on all Cisco platforms.

Topics

#FabricPath#MAC scalability#TTL loop mitigation#conversational learning

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