3Com 3C17203 - SuperStack 3 Switch 4400, Руководство по внедрению

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34 C
HAPTER
2: O
PTIMIZING
B
ANDWIDTH
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When multiple links of different speed connect two devices only the
highest speed links will be aggregated. The other links will be held in a
standby state until there is a problem with a higher speed link(s). The
lower speed link(s) will then become active.
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Note that resilient links must be disabled on any port that is to
become part of an aggregated link. It is not possible to configure
resilient links on a port that is a member of an aggregated link, and
vice versa.
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A LinkUp / LinkDown trap will only be sent for individual links. The
Traps will not be sent for an aggregation.
When setting up an aggregated link, note that:
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The ports at both ends of a member link must be configured as
members of an aggregated link, if you are manually configuring
aggregated links.
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A member link port can only belong to one aggregated link.
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The member link ports can be mixed media, that is fiber and/or
twisted pair ports within the same aggregated link.
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The member link ports can have different port configurations within
the same aggregated link, that is, auto-negotiation, port speed, and
duplex mode. However, please note the following:
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To be an active participant in an aggregated link the member link
ports must operate in full duplex mode. (If a member link port does
not operate in full duplex mode it can still be a member of an
aggregated link but it will never be activated.)
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If ports of a different speed are aggregated together, the higher
speed links carry the traffic. The lower speed links only carry the
traffic if the higher speed links fail.
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Aggregated links and resilient links are mutually exclusive, that is, you
cannot have both these features operating on the same ports.
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Aggregated links and roving analysis are mutually exclusive, that is,
you cannot have both these features operating on the same ports.
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Aggregated links and port security are mutually exclusive, that is, you
cannot have both these features operating on the same ports.
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The port to which the Webcache is connected cannot be a member of
an aggregated link.