Can the two Eth ports on a ZoneDirector be used for Load Balancing?

Summary

Can the two Eth ports on a ZoneDirector be used for Load Balancing / link aggregation?

Question

Can the two Eth ports on a ZoneDirector be used for Load Balancing?

Customer Environment

ZoneDirector and 2+ customer switches

Root Cause

Customers see two GigE ports on ZoneDirector and wonder if they can be combined for increased throughput.

Resolution

The two Ethernet ports on a ZoneDirector are each 1gig capable, but the two Physical interfaces are one Logical
interface to the ZoneDirector.
You can connect each ZD interface to a separate network switch, but Spanning Tree should block one of the switch
port paths to prevent the ZD MAC address from being seen on it's other interface, forming a loop. 
This provides High Availability for uptime purposes, in the event that a cable/interface/switch went bad or went down,
but we cannot transmit/receive traffic over both ZD interfaces simultaneously (Load Balancing / Link Aggregation).
 

Article Number:
000002296

Updated:
August 06, 2015 10:16 AM (over 3 years ago)

Tags:
Performance, Configuration, System Network Management, Known Issues and Workarounds, ZoneDirector

Votes:
9

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