Alteon Application Switch Operating System Application Guide
Load Balancing Special Services
Document ID: RDWR-ALOS-V2900_AG1302
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Configuring FTP Server Load Balancing
The following procedure is an example configuration for FTP SLB.
To configure FTP SLB
1. Ensure that a proxy IP address is enabled on the client ports, or DAM is enabled.
2. Ensure the virtual port for FTP is set up for the virtual server.
3. Enable FTP parsing on the FTP service.
4. To make your configuration changes active, apply your changes.
TFTP Server Load Balancing
As defined in RFC 1350, Trivial File Transfer Protocol (TFTP) can only read and write files from or to
a remote server. TFTP uses UDP datagrams to transfer data. A transfer begins with a request to read
or write a file, which also serves to request a connection. If the server grants the request, the
connection is opened and the file is sent in fixed length blocks of 512 bytes.
Each data packet contains one block of data, and must be acknowledged by an acknowledgment
packet before the next packet can be sent. A data packet of less than 512 bytes signals termination
of a transfer.
TFTP SLB is similar to other types of server load balancing. It uses configured SLB metric to select a
TFTP server. No additional commands are required to load balance to TFTP servers.
Requirements
You must select or enable the following:
•
Load-balancing service port 69
•
DAM
The following are not supported:
•
PIP, because the server port is changed. PIP uses server port for allocating a pport.
•
Multiple rports
>> Main# /cfg/slb/virt 1/service ftp
>> Main# /cfg/slb/virt 1/service 21/ftpp ena
>> Virtual Server 1 ftp Service# apply
