Avaya Configuring PPP Services Bedienungsanleitung PDF herunterladen (Seite 97)

Customizing PPP

117360-A Rev. A 3-43

• In the wfPppMlStatsEntry MIB:

-- wfPppMlStatsReSeqBufferCnt is the current count of packets (not

fragments) that the receiver has buffered because they arrived out of

order. To analyze the effects of fragmentation, periodically observe this

value under a typical trafﬁc load without fragmentation enabled on the

peer router, and then observe the value with fragmentation enabled on the

peer router. Typically, this number is higher in conﬁgurations with greatly

differing line speeds. This number should go down when fragmentation is

enabled. If this number is constantly at or near the maximum number of

buffers allowed, as indicated in wfPppCircuitMaxBuffers, reset the

maximum number of buffers allowed to a higher number. In addition, the

higher the value of wfPppCircuitMaxLinkss, the more likely it is you’ll

need to increase wfPppCircuitMaxBuffers.

-- wfPppMlStatsReSeqBufferMax is the maximum that

wfPppMlStatsReSeqBufferCnt ever reached.

-- wfPppMlStatsNumPktsFragmented counts the number of packets that

have been fragmented (transmit only). This indicates how often the router

judges that fragmentation is necessary.

-- wfPppMlStatsTxPkts counts the total number of packets transmitted by

multilink. Comparing this to the number of packets fragmented

(wfPppMlStatsNumPktsFragmented) helps you see how well the link is

doing and whether you need to adjust parameters such as the minimum

size of packets to be considered for fragmentation.

-- wfPppMlStatsReasmFails is an event counter of failures to reassemble a

fragmented packet. If this number is high, either you are losing fragments

or your reassembly buffer count is at or near the maximum number of

buffers allowed, as indicated in wfPppCircuitMaxBuffers. Reset the

maximum number of buffers allowed to a higher number.

-- wfPppMlStatsReassmBufferCnt is the number of fragments that the

receiver has stored pending reassembly. Typically, this number is higher

in conﬁgurations with greatly differing line speeds. If this number is

constantly at or near the maximum number of buffers allowed, as

indicated in wfPppCircuitMaxBuffers, reset the maximum number of

buffers allowed to a higher number.

-- wfPppMlStatsReassmBufferMax is the maximum number that

wfPppMlStatsReassmBufferCnt ever reached.

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Avaya Configuring PPP Services Bedienungsanleitung Seite 97