A Passport 1000 Series switch supports the IEEE 802.1D Spanning Tree Protocol. Later versions of the hardware (A, B, and C modules and chassis) also support the Nortel Networks MultiLink Trunking feature. The MultiLink Trunking feature groups ports to be treated as a single logical link for using Spanning Tree Protocol, learning MAC addresses, forwarding frames, and filtering.
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Note:
MultiLink Trunking requires hardware with ARU2 or above ASICs. If the device has earlier hardware, the required fields are grayed out.
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