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Figure 4-2 BladeCenter Ethernet connectivity

Internal Layer 2 traffic flow in the Nortel Networks L2/3 GbESM

Figure 4-3 shows the internal Layer 2 traffic flow in the Nortel GbESM. The hard coded filter in the Nortel GbESM blocks all traffic between the external ports and the Management Module ports. Two Nortel GbESMs in the same BladeCenter chassis exchange Layer 2 frames across the Management Module. The Nortel GbESM processes BPDUs that reach it via the Management Module if Spanning Tree is enabled for the Management Module ports. This is rarely necessary.

6 External ports

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Figure 4-3 Layer 2 frames flow in the Nortel Networks L2/3 GbESM

Chapter 4. Nortel Networks Layer 2/3 GbE Switch Module architecture

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IBM L2/3 manual GbESM2