Purpose
Command or Action
•
t3
—
STS-1 carries an unchannelized (clear channel) T3.
•
vt-15
—
A STS-1 is divided into seven Virtual Tributary Groups (VTG).
Each VTG is then divided into four VT1.5
’
s, each carrying a T1.
Configures the T1 on the VTG, where:
Router(config-ctrlr-sts1)#
vtg vtg#
Step 7
•
vtg#
—
Specifies the VTG number. For SONET framing, values are 1 to
7.
Configuring the SDH Mode
The SDH mode is supported on 1-Port Channelized OC-12/STM-4 SPA from Cisco IOS XE Release
3.1.1S onwards.
Note
To configure the SDH mode, complete the following steps:
SUMMARY STEPS
1.
Router(config-controller)# framing
s
dh
2.
Router(config-controller)#
aug mapping
{
au-3
|
au-4
}
3.
Router(config-controller)# clock source {internal | line}
4.
Do one of the following:
•
Router(config-controller)#
au-4 au-4# tug-3 tug-3#
•
•
Router(config-controller)#
au-3 au-3#
5.
In SDH framing in AU-4 mode:
DETAILED STEPS
Purpose
Command or Action
Specifies SDH as the frame type.
Router(config-controller)# framing
s
dh
Step 1
Configures AUG mapping for SDH framing.
Router(config-controller)#
aug
mapping
{
au-3
|
au-4
}
Step 2
If the AUG mapping is configured to be AU-4, then the following muxing,
alignment, and mapping will be used:
TUG-3 <--> VC-4 <--> AU-4 <--> AUG
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17
295
Configuring the 1-Port Channelized OC-3/STM-1 SPA and 1-Port Channelized OC-12/STM-4 SPA
Required Configuration Tasks