Cisco NM-1A-E3, Руководство пользователя, Страница: 16 / 26

Configuring the Cisco NM-1A-T3/E3 Network Module
Configuration Example
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Cisco IOS Release 12.4(15)T
Setting the Loopback Mode
To loop all packets back to your ATM interface instead of to the network, use the following command in
interface configuration mode:
To loop the incoming network packets back to the ATM network, use the following command in interface
configuration mode:
Configuration Example
This section gives a basic example of how to configure the MN-1A-T3/E3 network module.
Router# configure terminal
Router(config)# interface ATM2/0
Router(config-if)# ip address 10.0.0.2 255.0.0.0
Router(config-if)# no atm ilmi-keepalive
Router(config-if)# pvc 0/32
Router(config-if-atm-vc)# cbr 34000
Recommendations for Watermark Settings
Table 1 provides recommendations for watermark settings on the ATM T3/E3 module with a single VC.
For information about the traffic pattern used to test the watermark settings recommendations, see
Traffic Pattern, page 17 .
For an example of the router configuration, see Example of the Router Configuration Used for
Watermark Testing, page 18 .
Command Purpose
Router(config-if)# loopback
Sets loopback mode.
Command Purpose
Router(config-if)# loopback line
Sets line loopback mode.
Table 1 Ideal Watermark Settings for Better Performance
EF
Description Voice Packet 64B and Data Packet 300B
With or Without Burst Voice Packet 64B and Data Packet 1400B
With or Without Burst
— 1M PVC 2M PVC 5M PVC 10M
PVC
20M
PVC 1M PVC 2M PVC 5M PVC 10M
PVC
20M
PVC
30% EF 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5
40% EF 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5
50% EF 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 20/20
60% EF 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 10/5 20/20