You must move from a campus fabric core-distribution centrally-routed bridging (CRB) network to an edge-routed bridging (ERB) network. In this scenario, where does the gateway for the network move?

Question

Options

• Afrom access to distribution
• Bfrom distribution to core
• Cfrom distribution to access
• Dfrom core to distribution

• A
  3% (1)
• B
  7% (2)
• C
  77% (23)
• D
  13% (4)

Explanation

In Juniper Mist campus fabric architectures, the location of the Layer 3 gateway (IRB interface) differentiates centrally-routed bridging (CRB) from edge-routed bridging (ERB): In CRB, the gateway resides at the core layer -- routing occurs centrally, and access/distribution layers perform Layer 2 bridging. In ERB, the gateway moves to the edge (distribution layer), enabling routing to occur closer to endpoints, improving performance and scalability. "In a centrally-routed bridging (CRB) topology, Layer 3 gateways reside at the core. When transitioning to an edge-routed bridging (ERB) design, the Layer 3 gateways are moved to the distribution layer, closer to the access switches and clients." Therefore, when moving from a core-distribution CRB to an ERB model, the gateway moves from the distribution to the access layer in campus terms (edge = access). Option A: Incorrect -- ERB gateways are not at the distribution layer only. Option B: Incorrect -- opposite direction. Option C: Correct -- the gateway moves from distribution to access (edge). Option D: Incorrect -- this describes CRB, not ERB.

No community discussion yet for this question.