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A-2 61221002L2-5B
Table A-1. In-Band Addressable Loopback Codes
noitcnuFedoCesnopseR
3ni1
1
001.gnihtyrevenwodpooL
6ni1
1
000001 erofebdemraebtsum;krowtenehtdrawotR-UT2HehttakcabpooL
.detaitini
7ni40001111 .C-UT2HehtnikrowtendrawotkrowtenmorfatadkcabpooL
7ni60111111 .C-UT2HniremotsucdrawotremotsucmorfatadkcabpooL
E1FF100011111111
0111
.C-UT2HtakrowtendrawotkrowtenmorfatadkcabpooL
E1F3100011111100
0111
.C-UT2HtaremotsucdrawotremotsucmorfatadkcabpooL
mrA
1
nwonkosla(
)nrettap5-ni-2sa
00011 R-UT2Hehtdnamralliwstinueht,krowtenehtmorftnessinrettapehtfI
tluserasatneseblliwsrorreroSIAoN.krowtenehtdrawotpupoollliw
lliwstinulla,remotsucehtmorftnessinrettapehtfI.kcabpoolsihtfo
.mra
ataDFSE(mrA
)kniL
84FF
001011111111
0001
R-UT2Hnadnamralliwstinueht,krowtenehtmorftnessinrettapehtfI
nehwytilanoitcnufonsahedocsihT.detavitcaeblliwkcabpoolkrowten
.remotsucehtmorftnes
mrasiD
1
)dnab-ni(
sanwonkosla(
)nrettap5-ni-3
00111 ehtmorfdevomererastinulla,remotsucrokrowtenehtmorftnesnehW
nierastinuehtfoynafI.desaelereblliwskcabpooldnaetatsdemra
ehT.nwodpoollliwyeht,deviecersinrettap00111ehtnehwkcabpool
.stinullanoffonrutlliwsDELKBL
mrasiD
1
)kniLataDFSE(
42FF
010011111111
0010
ehtmorfdevomererastinulla,remotsucrokrowtenehtmorftnesnehW
.desaelereblliwskcabpooldnaetatsdemra
krowteNC-UT2H
pUpooL
2,1
3D3D
101111001011
1100
C-UT2Heht,*kcabpoolnierastinuondnademraneebevahstinuehtfI
depooleht,dettimsnarteblliw)senolla(SIAfosdnoces2,pupoollliw
eblliwsrorrecigol132fotsrubanehtdna,sdnoces5roftneseblliwatad
sasdnoces02yreveeunitnoclliwsrorrecigol132fotsrubehT.detcejni
eht,devomersinrettapehtnehW.detcetedsinrettap3D3Dehtsagnol
fonoitcejnieht,detatsni-ersinrettapehtfI.kcabpoolniniamerlliwtinu
morftnessinrettapehtfI.sdnoces02yreveeunitnoclliwsrorrecigol132
fI.krowtenehtdrawoteblliwnoitcejnirorrednapupooleht,krowteneht
lliwnoitcejnirorrednakcabpooleht,remotsucehtmorftnessinrettapeht
.remotsucehtdrawoteb
sserddAR-UT2H
dednetxerof02
cramed
1
457C
101011100011
0010
detavitcasikcabpoolkrowtenR-UT2Hna,remotsucehtmorftnesnehW
)senolla(SIAfosdnocesowT.tnessinoitamrifnocrorretib-002adna
eblliwsrorretib002nehtdna,ssaplliwatadfosdnoces5,tneseblliw
,tnesebotseunitnocnrettapehtsagnolsA.langis1-XSDehtotnidetcejni
lliwtinueciffo2LSDHehT.sdnoces02yrevedetcejnieblliwsrorre002
esimerpremotsucehtmorfkcabpoolUINdneraffonoissimsnartkcolbton
.)R-UT2H(
Note: All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.
* If NIU is enabled, then the H2TU-R can be in network loopback when the H2TU-C loop up codes are sent.
1
The H2TU-C and H2TU-R individually detect and act upon in-band loopback control codes. Depending on which list number of
H2TU-R is used with the Litespan H2TU-C, some of these control codes may not cause action (such as loop up, error injection, etc.) at the H2TU-R.
Refer to the H2TU-R documentation for supported control codes.
2
Units must be armed with 11000b or FF48h before this code will work
3
In order to behave like a NIU, the H2TU-R will not loop down from the network side with 9393h.
4
This code will be detected only if the units are armed OR if any loopbacks are active.