3Com 3824 Implementation Guide - Page 16

When using the Configuration Save and Restore feature, 3Com

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16 CHAPTER 1: SWITCH FEATURES OVERVIEW ■ The configuration can only be restored onto a device which has the same physical connections and configuration, as when the configuration was initially saved. The restore operation will be unsuccessful if the physical configuration of the device is different. ■ The configuration of the Switch must only be restored or saved by a single user at a time. ■ When using the Configuration Save and Restore feature, 3Com recommends that aggregated links are configured as either: ■ Manual aggregations with Link Aggregation Configuration Protocol (LACP) disabled on the ports that are to be manually placed in the aggregated link. or ■ LACP automatic aggregations - that is, LACP enabled on all ports and the aggregated links created automatically. The aggregated link should be enabled and Spanning Tree Protocol enabled. Parameters such as VLANs and Fast Start may be set up as required. Other combinations of port settings, however, are not recommended as Configuration Restore will only perform a "best effort" restore of the configuration. For example, LACP automatic aggregations with manually defined ports are restored as manual aggregations with manual ports. LACP automatic aggregations with automatic ports where the aggregated link is disabled and Spanning Tree Protocol is disabled are restored as manual aggregations with the aggregated link disabled. For further information about LACP, see Chapter 2 "Optimizing Bandwidth". ■ When restoring a configuration onto a unit over an aggregated link, communication with that unit may be lost because the restore operation disables the aggregated link ports. Communication over the aggregated links is re-established when the restore operation has been completed. For detailed descriptions of the Configuration Save and Restore Web interface operations and Command Line Interface (CLI) commands, please refer to the Management Interface Reference Guide supplied in HTML format on the CD-ROM that accompanies your Switch.

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16
C
HAPTER
1: S
WITCH
F
EATURES
O
VERVIEW
■
The configuration can only be restored onto a device which has the
same physical connections and configuration, as when the
configuration was initially saved. The restore operation will be
unsuccessful if the physical configuration of the device is different.
■
The configuration of the Switch must only be restored or saved by a
single user at a time.
■
When using the Configuration Save and Restore feature, 3Com
recommends that aggregated links are configured as either:
■
Manual aggregations with Link Aggregation Configuration
Protocol (LACP) disabled on the ports that are to be manually
placed in the aggregated link.
or
■
LACP automatic aggregations — that is, LACP enabled on all ports
and the aggregated links created automatically. The aggregated
link should be enabled and Spanning Tree Protocol enabled.
Parameters such as VLANs and Fast Start may be set up as required.
Other combinations of port settings, however, are not recommended
as Configuration Restore will only perform a “best effort” restore of
the configuration. For example, LACP automatic aggregations with
manually defined ports are restored as manual aggregations with
manual ports. LACP automatic aggregations with automatic ports
where the aggregated link is disabled and Spanning Tree Protocol is
disabled are restored as manual aggregations with the aggregated link
disabled.
For further information about LACP, see
Chapter 2
“
Optimizing
Bandwidth
”
.
■
When restoring a configuration onto a unit over an aggregated link,
communication with that unit may be lost because the restore
operation disables the aggregated link ports. Communication over the
aggregated links is re-established when the restore operation has
been completed.
For detailed descriptions of the Configuration Save and Restore Web
interface operations and Command Line Interface (CLI) commands, please
refer to the Management Interface Reference Guide supplied in HTML
format on the CD-ROM that accompanies your Switch.