Enterasys Networks CSX7000 Manuel d'utilisateur télécharger pdf (Page 554)

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101

USER’S GUIDE

554 CyberSWITCH

•Echo Reply

The Echo Reply is transmitted in response to an Echo Request. The Echo Reply packet

contains the magic number of the sending device. Until the magic number option has

been negotiated the value must be set to zero.

• Discard Request

The Discard request packet is transmitted by a device to exercise the data link layer

processing. This packet is silently discarded by the receiving device.

WAN FR_IETF TRACE MESSAGES

You can trace Frame Relay (FR_IETF) incoming and outgoing packets. This FR_IETF trace

information is placed into the Report log, which can be accessed by using the

command. Enable

this feature by using the

wan fr-ietf trace on

command, and disable it with

wan fr-ietf

trace off

. You can specify the direction of the packets (

out

), a particular device or PVC

(

<fr_accessname_dlci>

) and the protocol (

, or

IPX

) to be traced.

The following is the format of a FR_IETF trace line as it is displayed by

[packet direction]: [device name or fr_accessname_dlci] [protocol] size:[NN]

where:

[packet direction]

Indicates the packet direction. IN means received packet, OUT means transmitted packet.

[device name or fr_accesname_dlci]

Indicates the device or Frame Relay PVC associated with the traced data.

[protocol]

Identifies the protocol type of the traced data. Protocol types are AT (AppleTalk), BR (MAC

Layer Bridge), IP, and IPX.

[NN]

Identifies the size of the data in bytes.

X.25 TRACE MESSAGES

It is now possible to trace X.25 incoming and outgoing packets. This X.25 trace information is placed

into the Report log, which can be accessed by using the

command. Enable this feature by using

the

trace x25 on

command, and disable it with

trace x25 off

X.25 TRACE MESSAGE SUMMARY

In - X25 Call Connect LCN <logical channel number>, <number of bytes> bytes

The DTE has accepted an incoming SVC call.

In - X25 Clear Ind LCN <logical channel number>, <number of bytes> bytes

An SVC call has been cleared by the DCE.

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Enterasys Networks CSX7000 Manuel d'utilisateur Page 554

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