Alteon Application Switch Operating System Application Guide
Application Redirection
480
Document
ID:
RDWR-ALOS-V2900_AG1302
Note:
If no string is assigned to the server, the server will handle all requests.
14. Apply and save the configuration.
Client requests “condor.rm” or “tiger.rm” are retrieved from the local Cache servers 1 or 2 and 3
or 4 respectively. However, a client request “cheetah.mov” bypasses the local cache servers and
is forwarded to the original server.
Peer-to-Peer Cache Load Balancing
The pattern matching filter redirection feature load balances peer-to-peer caches. The pattern
matching filter redirection feature supports ALLOW, DENY, and REDIR actions. For more information
on this topic, see
Filtering and Traffic Manipulation, page 355
There are two instances where a packet will be redirected because of a pattern matching filter:
1. The packet matches a previously configured filter with a REDIR action.
2. A packet earlier in the session was matched against a filter configured with a REDIR action and
the session has been converted to a redirect session. In this instance, subsequent packets after
the initial match are not subjected to pattern matching.
Packet redirection is accomplished by substituting the original destination MAC address with the
real server MAC address. Some applications, however, require that all of the Layer 2 information
remain unmodified in the redirected packet. To support instances where this is the case, you can
disable destination MAC address substitution on a real server by real server basis. With this
option enabled, all packets will be transparently redirected and no destination MAC address
substitution will take place.
Note:
Disabling destination MAC address substitution is only available for filter redirection.
To disable destination MAC address substitution, issue the following command:
>> # /cfg/slb/real 1
(Select the Real Server 1)
>> Real Server 1# Layer 7/addlb 3
(Add the URL string ID 3)
>> Real Server 1 Layer 7 Commands# cfg/slb/real 2
>> Real Server 2# Layer 7/addlb 3
(Add the URL string ID 3)
>> Real Server 2 Layer 7 Commands# cfg/slb/real 3
>> Real Server 3# Layer 7/addlb 4
(Add the URL string ID 4)
>> Real Server 3 Layer 7 Commands# cfg/slb/real 4
>> Real Server 4# Layer 7/addlb 4
(Add the URL string ID 4)
>> Real Server 4 Layer 7 Commands# apply
>> Real Server 4 Layer 7 Commands# save
>> Main# /cfg/slb/real <real server number> /adv/subdmac disable
