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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers
The syntax of the atm pvp command is:
atm pvp vpi
vpi is the ATM network VPI to use for this virtual circuit, in the range of 0 to 255 for UNI or 0 to 4095
for NNI; vci is the ATM network VCI to use for this virtual circuit, in the range of 0 to 655,535.
Troubleshooting Tips
To display information about the connected virtual circuits, use the following commands:
Command
Router# show atm pvc
Router# show atm vc
Configuring ATM Shaping on Terminated VCs
The 4-Port ATM ISE line cards support IP traffic shaping on terminated VCs. The following ATM
shaping options are available:
•
•
•
•
To configure ATM shaping, perform the shaping commands in PVC mode. You should use only one of
the shaping commands in
Restrictions
CDVT
When traffic shaping is configured on a VC, the cell delay variation (CDV) is set for the VC. This value
will change according to the shaping class defined. The cell delay variation tolerance (CDVT) values are
shown in
Table 4
Traffic Class
CBR
UBR
VBR-RT
VBR-NRT
Purpose
Displays current ATM PVC information.
Displays current ATM VC information.
Constant bit rate (CBR)—Supports real-time applications that request a static amount of bandwidth
that is continuously available for the duration of the connection. (See
Real-time variable bit rate (VBR-rt)—Supports real-time applications that have bursty transmission
characteristics. (See
Step
6.)
Non-real-time variable bit rate (VBR-nrt)—Supports non-real-time applications with bursty
transmission characteristics that tolerate high cell delay, but require low cell loss. (See
Unspecified bit rate (UBR)—Supports non-real-time applications that tolerate both high cell delay
and cell loss on the network. There are no network service-level guarantees for the UBR service
category, and therefore it is a best-effort service. (See
Step 5
Table
4.
CDVT per Traffic Class for Traffic Shaping
OC-12c/STM-4c Line Card
70 μsec
185 μsec
70 μsec
185 μsec
How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card
Step
through
Step
8, depending on the type of shaping to be configured.
OC-3c/STM-1 Line Card
70 μsec
305 μsec
70 μsec
305 μsec
Step
5.)
8.)
Cisco IOS Release 12.0(27)S
Step
7.)
9
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