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Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter9 Troubleshooting Commands tstdelay
tstdelay
Test Delay
Test the integrity of the connection in the ingress direction by sending a collection of supervisory cells
to the remote end of the netw ork an d back. (See tstconseg f o r th e eg res s d ir ect io n .) Th e tstdelay
command applies to only SPVCs.
If the test successfully begins, th e display states the fact and direct s y ou to u se th e dspc on or
dspchantests command to view th e r ou nd tr ip ti m e in mi cr os eco nds. T he dspcon display shows detailed
information on the connection and has a field for the test results. The dspchantests display shows the
results of only the round trip delay test.
Note The dspcon fields on the AXSM for round trip delay—including the status of OAM
loopback—always show the re sults of the latest te s t a nd are not changed un til a new execution of
tstconseg or tstdelay. Therefore, re-executing dspcon does not clear the value for RTD or the
indication that an OAM loopback i s present. The only way to reset thes e fields to null is to down the
port (through dnport).
Note The primary purpose of tstdelay is to test the integrity of the connection . T h e r ou nd trip time is not
accurate enough for any use that r eq ui r es an a ccurate measurement of delay.
Cards on Which This Command Runs
AXSM
Syntax
tstdelay <ifNum> <vpi> <vci>
[-num <iterations>]
Syntax Description
Related Commands
dspcons, tstconseg, dspcon
ifNum The logical port number. The range for AXSM is 1–60.
vpi Virtual path identifier. On the AXSM, the range is 1–255.
vci Virtual connec tion identifier. On the AXSM, the range is 32–65535 for a VCC. For a
VPC, the vci is 0.
-num (Optional) Specifies the number of times a collection of supervisory cells should
traverse the SVC for the curren t exec ut io n of tstdelay.