sonet-sdh
config>port
This command enables access to the context to configure SONET/SDH ports. This context can only be used when configuring an OC3/OC12 or STM1/STM4 port on an appropriate adapter card.
SONET/SDH ports can be configured on the following adapter cards:
4-port OC3/STM1 / 1-port OC12/STM4 Adapter card
4-port OC3/STM1 Clear Channel Adapter Card
2-port OC3/STM1 Channelized Adapter card
clock-source {loop-timed | node-timed}
config>port>sonet-sdh
This command configures the clock for transmitted data from either the internal clock or from a clock recovered from the line’s receive data stream.
node-timed
the link recovers the clock from the received data stream. The 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card does not support loop timing.
the link uses the internal clock when transmitting data
framing {sonet | sdh}
config>port>sonet-sdh
This command specifies the SONET/SDH framing to be either SONET or SDH.
Changing the framing mode on the 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card causes the adapter card to reset.
sonet
configures the port for SONET framing
configures the port for SDH framing
group sonet-sdh-index payload {tu3 | vt2 | vt15}
config>port>sonet-sdh
This command configures the SONET/SDH group payload on a 2-port OC3/STM1 Channelized Adapter card or a 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card.
n/a
specifies the group index for the port on the 2-port OC3/STM1 Channelized Adapter card or 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card configured for OC3. When configured for OC12, the sonet-sdh-index specifies the tug3-index, where index is from 1 to 3.
specifies the tributary unit group (TUG3) on a path and configures the port or channel for transport network use (supported only on the 2-port OC3/STM1 Channelized Adapter card)
configures the path as a VT2 type virtual tributary group
configures the path as a VT1.5 type virtual tributary group
hold-time {[up hold-time-up] [down hold-time-down]}
no hold-time
config>port>sonet-sdh
This command configures SONET link dampening timers in 100s of milliseconds, to guard against reporting excessive interface transitions. Once implemented, subsequent transitions of the interface from one state to another are not advertised to upper layer protocols until the configured timer has expired.
no hold-time
the hold-timer for link up event dampening. A value of zero (0) indicates that an up transition is reported immediately.
the hold-timer for link down event dampening. A value of zero (0) indicates that a down transition is reported immediately.
loopback {line | internal}
no loopback
config>port>sonet-sdh
This command activates a loopback on the SONET/SDH port. The SONET port must be in a shutdown state to activate any type of loopback. The loopback setting is never saved to the generated/saved configuration file.
Loopback mode changes on a SONET/SDH port can affect traffic on the remaining ports.
no loopback
sets the port into a line loopback state. A line loopback loops frames received on the corresponding port back towards the transmit (egress) direction. Line loopbacks are supported on ports configured in network mode.
sets the port into an internal loopback state. An internal loopback loops the frames that are coming in an egress direction from the fabric towards the framer, back to the fabric. This type of loopback is usually referred to as an equipment loopback. Internal loopbacks are supported on ports configured in access mode.
[no] report-alarm [loc] [lais] [lrdi] [ss1f] [lb2er-sd] [lb2er-sf] [slof] [slos] [lrei]
config>port>sonet-sdh
This command enables logging of SONET/SDH line and section alarms for a SONET/SDH port. When configured, logging is enabled for the raising and clearing of the specified alarms.
The no form of this command disables logging of the specified alarms.
reports a loss of clock that causes the operational state of the port to be shut down
reports line alarm indication signal errors
reports line remote defect indication errors. Line remote defect indication errors are caused by remote loss of frame (LOF), loss of clock (LOC), and loss of signal (LOS) conditions.
reports section synchronization failure, which is detected when the S1 byte is not consistent for eight consecutive frames. When configured, ss1f alarms are raised and cleared. Although this option is shown on the CLI, it is not available for use on the 7705 SAR.
reports line signal degradation BER (bit interleaved parity) errors
reports line signal failure BER errors
reports section loss of frame errors
reports a section loss of signal error on the transmit side
reports a line error condition raised by the remote end as a result of b1 errors received from this node. When configured, line error alarms are raised but not cleared.
section-trace {increment-z0 | byte value | string string}
config>port>sonet-sdh
This command configures the section trace bytes in the SONET section header to interoperate with some older versions of ADMs or regenerators that require an incremental STM ID. You can explicitly configure an incremental STM value rather than a static one in the SDH overhead by specifying an increment-z0 value.
The increment-z0 parameter is not supported on the 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card.
byte 0x1
configures an incremental STM ID instead of a static value
sets values in SONET header bytes
specifies a text string that identifies the section
speed {oc3 | oc12}
config>port>sonet-sdh
This command configures the speed of a SONET/SDH port.
Although the oc3 option is shown in the CLI, it is not configurable. And, although the oc12 option is shown in the CLI, it is not available for use on the 7705 SAR. Users can change between oc3 and oc12 on the 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card by using the mda-mode keyword in the config>card>mda context and selecting either the p4-oc3 or p1-oc12 option. The adapter card automatically reboots to make the change.
The no form of this command reverts to the default value.
oc3
sets the speed of the port to OC3
sets the speed of the port to OC12 (not available on the 7705 SAR)
threshold {ber-sd | ber-sf} rate threshold-rate
no threshold {ber-sd | ber-sf}
config>port>sonet-sdh
This command configures the line signal (b2) degradation bit error rate (BER) and line signal failure thresholds.
Alarms are raised if the line signal bit interleaved parity error rates exceed either the degradation or failure thresholds. If the failure threshold is crossed, the link will be set to operationally down.
The no form of this command reverts to the default value.
threshold ber-sd 6 - signal degrade BER threshold of 10-6
threshold ber-sf 3 - signal failure BER threshold of 10-3
specifies the BER for signal degradation
specifies the BER for signal failure
specifies the BER negative exponent (n in 10-n), expressed as a decimal integer
[no] tx-dus
config>port>sonet-sdh
This command allows the Quality Level (QL) value transmitted from the Synchronization Status Messaging (SSM) channel of a SONET/SDH port to be set to QL-DUS/QL-DNU (do not use for synchronization for timing purposes).
no tx-dus