Chapter 2 Tutorials
2.3How to Use ATM QoS with Multiple PVCs and Interface Groups
Note: Voice traffic will not be affected by the user-defined QoS settings on the P- 2812HNU-51c. It always gets the highest priority.
The P-2812HNU-51c allows you to have more than one PVC using the ATM layer-2 interface. You can apply different ATM QoS settings to traffic through different PVCs. In this example, real-time or video service, such as using a webcam to send photos or uploading media content to share videos and images on a blog, comes from LAN 1 and is forwarded out through PVC 1 (0/33). Non-time sensitive data transfers, such as e-mail or FTP, come from LAN 2 or LAN 3 and are forwarded out through PVC 2 (0/34). The maximum upstream transmission speed of your ADSL port is 1 Mbps. You want to give the real-time traffic fixed bandwidth 400 Kbps and higher priority over the general data transmission which shares the bandwidth 600 Kbps.
Table 2 ATM QoS and Group Settings
TRAFFIC TYPE | LAN | PVC | ATM QOS | BANDWIDTH | GROUP |
Real-time or video | LAN1 | atm1 (0/33) | CBR | 400 Kbps | GR1 |
service | | | | | |
| | | | | |
Non-time sensitive | LAN2, LAN3 | atm2 (0/34) | Non Realtime | 600 Kbps | GR2 |
data | | | VBR | | |
| | | | | |
Note: To apply different QoS priorities to different applications over a PVC, use the Advanced > QoS screens. The packet-level QoS feature is not applicable to a PVC with CBR or Realtime VBR enabled.
GR1
PVC 1 (0/33)
GR2
PVC 2 (0/34)
Overview of what you have to do
1Create PVCs using the Network > WAN screens. See Figure 2.3.1 on page 44.
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P-2812HNU-51c User’s Guide |
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