Configure ATM Support

ATM support is configured via the command-line interface.

Note: Virtual circuit partition sizes, which are automatically created by the PacketWise ATM feature, are regularly adjusted in response to need. As a result, if you require manual control of virtual circuit partitions, manually create VC partitions and child classes without using any of the PacketWise ATM commands. In this way you can set the partition size and make it burstable up to the Peak Cell Rate (PCR). For example, you might create a 16 Kbps partition that is burstable to 56 Kbps. Note that when you choose to manually create VC classes and partitions, PacketWise cannot respond to compression or contention on the router as it automatically does when you use the ATM commands.

To configure ATM support:

1. Use the atm add command to configure each router on your ATM network.
2. After several seconds, use the atm show command to verify that PacketWise has picked up the WAN interface name/number, the VPI, the VCI, and the router's SysName.
   
   This information is collected through SNMP polling even when shaping and traffic discovery are turned off.
   
   
3. Use the atm routing command to verify that the IP routes have been detected.
4. Check the values for CIR and EIR in the atm show output. If you need to adjust these values, use the atm override command.
   
5. Use atm show to verify that the override successfully updated the values. Also, use partition show to verify that the minimum and maximum values for each VC partition matches the values you set with the atm override command.
6. If you haven't already done so, turn on traffic discovery in the browser interface or use the setup discover command at the CLI. When traffic discovery is enabled, PacketWise creates classes under each VC class for the applications and protocols it detects.
7. Verify that shaping is turned on by clicking setup in the browser interface or using the setup shaping command at the CLI. When you turn on shaping, PacketWise can begin enforcing the adjusted partition sizes for its VC classes.
8. If necessary, use the atm options command to enable/disable auto-routing and VC traffic discovery.
9. Use the atm community command to change the SNMP read string, if this was changed on the router.

See also:

ATM Overview

VC Classes for ATM

ATM Tips