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Internal servers can't access internet - F5 LTM VE

Updated 10/3/2012 • Originally posted on 03-Oct-2012 by ejgilles 0

I'm a newbie to F5 so be easy on me :) . I setup an F5 LTM VE on Vsphere 4.1 and I have setup basic load balancing on 2 VM guest servers I created. I also have my Vsphere host trunked to my physical cisco switch. Everything seems to be working. From my home network I can access my VM guest servers on my Vsphere host but I can't access the internet from my VM guest servers. I tried playing with the default routes on the LTM but no luck.  I  aslo have the default gateway of the my VM guest web servers set for the self IP (20.20.20.40). I can also ping my SVI on my switch (20.20.20.1) with no problems. If I configure my VM guest web servers default gateway with the SVI of my cisco switch VLAN (20.20.20.1) then I can acess the internet but then it breaks my load balancing. Any help would be appreciated. Here's a little diagram of what I have.

 

                 VLAN 10                      
                10.10.10.0   <--- ME              
                     |                           
                     |                           
-----------------------------------------------------
-                                                              -
-              Cisco 3550 Switch                  -
-             Vlan 10 (10.10.10.1)                -
-             Vlan 20 (20.20.20.1)                -
-             Vlan 30 (30.30.30.1)                -
-                                                              -
------------------------------------------------------
                    
                     |
                     |  <---TRUNKING 10,20,30
                     |

--------------------------------------------------------------
-                Vsphere Host       10.10.10.10       -      
-                F5 LTM VE          10.10.10.5          -
-                Web Server VS IP   20.20.20.50     -
-                Web Server Self IP 20.20.20.40     -
-                Web Server         20.20.20.60         -
-                Web Server         20.20.20.70         -
-                                                                        -
--------------------------------------------------------------

 

 

 

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6 Answers:

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Updated 04-Oct-2012 • Originally posted on 04-Oct-2012 by What Lies Beneath 6427

By default, your device won't route traffic that isn't handled by LTM. You need to either configure a forwarding Virtual Server or configure routing Virtual Servers. See this article for more information on configuring the routing Virtual Servers:

http://support.f5.com/kb/en-us/solu...r=24070250

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Updated 05-Oct-2012 • Originally posted on 05-Oct-2012 by Edwin Jean 0

I'm new to this F5 virtual forward stuff but I did what the article said with no luck. I also have it attached. Is there a certain way to configure this with the setup I have. Thanks in advance.

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Updated 05-Oct-2012 • Originally posted on 05-Oct-2012 by What Lies Beneath 6427
Ok, so, can you clarify what the default route is on both the VM guest server and the F5 please?
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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Updated 05-Oct-2012 • Originally posted on 05-Oct-2012 by Edwin Jean 0

The default gateway I have set for my VM guest servers are 20.20.20.40. (Self IP). Also I created a default route to the gateway of 20.20.20.1 (Cisco switch Vlan SVI). Screenshot also attached.

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Updated 05-Oct-2012 • Originally posted on 05-Oct-2012 by Edwin Jean 0

My mistake forgot to attach screenshot.

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USER ACCEPTED ANSWER & F5 ACCEPTED ANSWER
Updated 06-Oct-2012 • Originally posted on 06-Oct-2012 by What Lies Beneath 6427
Can't see the attachment.

OK, I think I fully understand your configuration now. So, the default route you setup for LTM, you did this in the GUI? Can you post the text output of the 'route' CLI command please. Plus the text output of the routing Virtual Server configuration.
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