Virtual Server Status¶

Test Disabled Virtual Servers¶

In this task, you will disable and enable various virtual servers and note the behavior.

Make sure you have two SSH sessions opened to the BIG-IP.

In window 1, have a tcpdump watching traffic to the www_vs virtual (10.1.10.100)
In window 2, go into TMSH

Disable www_vs from the Virtual Server List or from within the www_vs GUI interface.

Open Local Traffic > Virtual Servers and hover over status icons.

From window 2 (TMSH) type:

show ltm virtual
show ltm virtual www_vs

Q1. What is the Availability of www_vs? What is the State?

Q2. What symbol is used to represent www_vs status?

Q3. Would you expect browsing to http://10.1.10.100 to work?

Q4. Can you ping the virtual IP?

Clear virtual server stats and browse to http://10.1.10.100

Observe the tcpdump (window 1) and connection statistics in the Virtual Server statics GUI interface.

Q5. Did the site work? What did the tcpdump show?

Q6. Did statistics counters for any virtual server increment?

Establish ftp connection to 10.1.10.100 and ensure successful login.

Disable ftp_vs.

Q10. Does ftp session still work? Why?

Open another window and establish ftp connection to 10.1.10.100.

Q11. Did new ftp session establish connection? Why not?

Warning

Make sure all virtual servers are Enabled before continuing.

In this task, you will set the connection limit for the FTP virtual server to 1 and note the status and behavior of different connection scenarios.

Modify ftp_vs for connection limit of 1. The Connection Limit option can be found under the Advanced virtual server menu.

Establish ftp connection to 10.1.10.100 and hold the logon open.

Q1. Does FTP session work?

Q2. What is the virtual server symbol and status of ftp_vs?

Open another window and establish a second ftp connection to 10.1.10.100.

Q3. Did new ftp session establish connection? Why not?

Q4. Did tcpdump capture a connection reset?

Q5 Quit all FTP sessions and note ftp_vs status.

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