MSS 上的ATM中继（Trunk）是ATM网络上节点间的逻辑连接，是建立在物理连接之上。ATM中继（Trunk）支持DPRS，可以承载帧中继（Frame Relay）业务。通常ATM中继（Trunk）是ATM 接口下一条VC电路。在Nortel MSS ATM网络内，ATM接口设定为PNNI.而与其它网络连接时，ATM接口设定为IISP.其中VCI和VPI的值时可以随意设定，只要是在允许范围之内。
中继（Trunk）构造和关联的示意图，如下：
|
> d trk/*
Trk/*
Use -noTabular to see the many hidden attributes.
+=====+-----+----+-----+------+--------------------+----------+-------+-----
| Trk |osiAd|osiO|osiUs|snmpOp| remote | spd | rtd | mtu
| | min |per | age |erStat| | bit/s| msec|bytes
| | | | | us | | | |
+=====+-----+----+-----+------+--------------------+----------+-------+-----
| 1032|unlck|ena |busy |up |EM/SHSHYJP15K1 | 14490624| 0.5|65512
| | | | | | TRUNK/05232 | | |
| 2032|unlck|ena |busy |up |EM/BJBJCQP15K1 | 14490624| 2.3|65512
| | | | | | TRUNK/06232 | | |
ok 2006-04-06 23:55:44.41 |
问题一：
ATM中继（Trunk）状态是正常，有流量，但是用户电路无法迂回至此条中继上。
解决思路：
1、首先检查ATM中继（Trunk）的Atmif下是否有PNNI设置，并且在运行状态下正常。检查命令如下：
|
> d atmif/23 pnni rcc
AtmIf/23 Pnni Rcc
adminState = unlocked
operationalState = enabled
usageState = active
type = lowestLevelHorizLink
negotiatedVersion = version1point0
helloState = twoWayInside
remoteNodeId = 28A045861941010104000F000000000090CFF5280028
remoteNodeName = SHSHPP7K02
remotePortId = 655361
remoteInterfaceName = Atmif/10
helloPacketsRx = 24339
helloPacketsTx = 24368
mismatchedHelloPacketsRx = 1
badHelloPacketsRx = 0
ok 2005-04-17 16:34:11.93 |
|
> d atmif/23 pnni sig
AtmIf/23 Pnni Sig
adminState = unlocked
operationalState = enabled
usageState = active
lastTxCauseCode = 0
lastTxDiagCode = 00
lastRxCauseCode = 0
lastRxDiagCode = 00
currentConnections = 0
peakConnections = 0
successfulConnections = 0
failedConnections = 0
txPdus = 0
rxPdus = 0
currentPmpConnections = 0
peakPmpConnections = 0
successfulPmpConnections = 0
failedPmpConnections = 0
ok 2005-04-17 16:40:48.87 |
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http://cisco.chinaitlab.com/failure/723374.html
