3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 3 Congestion Management3Com Corporation3-44[3Com-qospolicy-CBQ] classifier http behavior http[3Com-qospolicy-CBQ] classifier voice behavior voice[3Com-qospolicy-CBQ] quitIn an AF queue, the FTP packets are ensured the minimum bandwidth of 64 kbps andthe HTTP packets are ensured the minimum bandwidth of 32 kbps. Voice packets in EFqueues have sending priority. They are ensured the maximum bandwidth of 32 kbps.# Apply the policy in outbound direction of interface serial2/0/0.[3Com] interface Serial2/0/0[3Com-Serial2/0/0] link-protocol ppp[3Com-Serial2/0/0] ip address 10.1.1.1 255.255.255.0[3Com-Serial2/0/0] qos max-bandwidth 2048[3Com-Serial2/0/0] qos apply policy CBQ outbound3.8.5 Integrated QoS Policy Embedding and LR Configuration ExampleI. Network requirementsFigure 3-10 presents a scenario, where:z Hosts on Network A, PC1 and PC2, need to send data to hosts on Network B. PC1needs to send network performance monitoring data to UDP port 3000 on Serveron Network B in addition.z On 3Com 1, the rate of incoming interface Ethernet 1/0/0 is 10 Mbps, and the rateof outgoing interface Serial 3/0/0 is 2 Mbps. As the result of this rate discrepancy,congestion may occur on interface Serial 3/0/0.It is required that:z When congestion occurs, 256 kbps bandwidth is assured for data transmitted fromNetwork A to Network B.z The size of network performance monitoring data is limited under CIR rate, 80kbps. Packets beyond the limit are not dropped directly. Instead, they are sentmarked with the lowest preference to the downstream device.z To ensure smooth transmission, LR does not apply to all data sent from Network Ato Network B but network performance monitoring data.
