HTTP Troubleshooting:

 1.Client is unable to access web application. Pool Member 1 is mark Available (Green Circle)

2. Client is unable to access web application. It is confirmed that Virtual Server, Pool Members and Nodes are mark available (Green Circle)

3. Clients can access the web application successfully via BIG-IP. The BIG-IP is receiving frequent request to a site that contains large amount of static content such as CSS files, images, and javascripts. Optimization is needed as number of clients continuously increase. What do you need to enable.

 

HTTP Caching / Web Acceleration

 ▰ is a collection of HTTP objects stored in the BIG-IP system's memory

 ▰ subsequent connections can reuse to reduce traffic load on the origin web servers

. ▰ reduce the need to send frequent requests for the same object and eliminate the need to send full responses

 ▰ Cache Content Types: 200, 203, 303, 301, 401 HTTP Responses, CSS files, JavaScript, images HTTP Troubleshooting HTTP Compression aka Content Encoding

▰ Client sends HTTP Request, BIG-IP reads the ACCEPT-ENCODING and removes its header and passes to the Server

▰ Server receives the REQUEST and force not to compress HTTP Request Body

. ▰ BIG-IP receives Server response and inserts CONTENT-ENCODING header (gzip or deflate) and sends compressed data back to the client.

 ▰ Compress and reduce the size of HTTP REQUEST Body using available method from Client to BIG-IP to Client.

 Note: Both are profiles configured under Acceleration Module and required to enable HTTP Profile on Virtual Server

 

HTTP Status Codes

 ▰ a three-digit integer seen in Response header

 ▰ identifies the general category of response on 1st digit

 

HTTP/1.0 200 OK             HTTP/1.0 404 Not Found

 

General Category of Responses:

▰ 1XX indicates an informational message only

 ▰ 2XX indicates success

 ▰ 3XX redirects the client to another URL

 ▰ 4XX indicates an error on the client’s part

▰ 5XX indicates an error on the server’s part

 

4. HTTP 302 Redirect

5. HTTP 404 Not Found

HTTP 401 Unauthorized

HTTP 502 Bad Gateway