Alteon Application Switch Operating System Application Guide
Server Load Balancing
Document ID: RDWR-ALOS-V2900_AG1302 197
Configuring Multiple Service Ports
To configure multiple serve ports
Two commands, addport and remport, under the Real Server menu, let users add or remove
multiple service ports associated with a particular server. A service port is a TCP or UDP port
number. For example: addport 8001 and remport 8001.
1. Configure the real servers.
2. Add all four servers to a group.
3. Configure a virtual server IP address.
4. Turn on multiple rport for port 80.
5. Add the ports to which the Web server listens.
Direct Server Return
The Direct Server Return (DSR) feature allows the server to respond directly to the client. This is
useful for sites where large amounts of data flow from servers to clients, such as with content
providers or portal sites that typically have asymmetric traffic patterns.
DSR and content-intelligent Layer 7 load balancing cannot be performed at the same time because
content-intelligent load balancing requires that all frames go back to Alteon for connection splicing.
>> # /cfg/slb/real 1/rip 192.168.2.1/ena
>> # /cfg/slb/real 2/rip 192.168.2.2/ena
>> # /cfg/slb/real 3/rip 192.168.2.3/ena
>> # /cfg/slb/real 4/rip 192.168.2.4/ena
>> # /cfg/slb/group 1
>> Real server Group 1# add 1
>> Real server Group 1# add 2
>> Real server Group 1# add 3
>> Real server Group 1# add 4
>> # /cfg/slb/virt 1/vip 192.168.2.100/ena
>> # /cfg/slb/virt 1/service 80/rport 0
>> # /cfg/slb/real 1/addport 8001
(Add port 8001 to Real Server 1)
>> # addport 8002
(Add port 8002 to Real Server 1)
>> # /cfg/slb/real 2/addport 8001
(Add port 8001 to Real Server 2)
>> # addport 8002
(Add port 8002 to Real Server 2)
>> # /cfg/slb/real 3/addport 8001
(Add port 8001 to Real Server 3)
>> # addport 8002
(Add port 8002 to Real Server 3)
>> # /cfg/slb/real 4/addport 8001
(Add port 8001 to Real Server 4)
>> # addport 8002
(Add port 8002 to Real Server 4)
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