Alteon Application Switch Operating System Application Guide
Filtering and Traffic Manipulation
Document ID: RDWR-ALOS-V2900_AG1302
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2. Configure Filter 20 to allow client traffic to browse the Web.
3. Configure Filter 20 to enable the Return to Source MAC address option. This adds an opposite
entry in the session table so that the return traffic matches its source MAC address.
Non-Transparent Load Balancing
Alteon continues to support non-transparent load balancing. When employing non-transparent load
balancing, Alteon redirects the traffic and returns it to the client and changes one or more source or
destination parameters in the process.
The following is an example of a supported non-transparent load balancing scenario.
Redirecting Traffic with a Non-Transparent Server
When redirecting traffic with a non-transparent server, the client traffic is redirected to a VAS server
group. The VAS server changes the destination IP and destination port to that of the VAS server and
sends the traffic to the internet. The return traffic is then redirected back to the VAS server and the
server translates its source IP and source port back to the original before returning to the client.
>> Filter 10# vlan any
(To any VLAN)
>> Filter 10# ena
(Enable the filter)
>> # /cfg/slb/filt 20
(Select the menu for Filter 20)
>> Filter 20# sip 1.1.0.0
(From the proxy IP address)
>> Filter 20# smask 255.255.0.0
(From the proxy IP mask)
>> Filter 20# dip any
(To any network destination address)
>> Filter 20# dmask 0.0.0.0
(For any subnet range)
>> Filter 20# ipver v4
(Set filter IP version to IP Version 4)
>> Filter 20# action allow
(Allow matching traffic to pass)
>> Filter 20# vlan any
(To any VLAN)
>> Filter 20# ena
(Enable the filter)
>> # /cfg/slb/filt 20/adv
(Select the Advanced menu for Filter 20)
>> Filter 20 Advanced# rtsrcmac ena
(Enable Return to Source MAC Address)
