Forum Discussion
Mathewjose777_5
Nimbostratus
NimbostratusProblem connecting internal - external vlans
Hi Gurus,
We have a LTM 3600 (9.4.x) and 3 web servers.
The member webservers have 2 sets of IP with different subnets
(10.10.1.x / 255.0.0.0) & (150.10.20.x/255.255.0.0)
The LTM self ip defined as below
internal - 10.10.1. series
external 150.10.20. series
created the pool and added these member servers with the 150.10.20.x ip sets
created the virtual server with 150.10.20.x
Pool is working fine (available - green)
virtual server is also available (green)
The member webservers default gateway is changed to the LTM's 150.10.20.x Self IP.
Now, when I tested the setup calling
http://150.10.20.x (virtual server)
I am getting error that
"The gateway has lost the connection with the web site you are trying to access"
Do I need to create any routes in the LTM console?
Is the gateway which I given for the member servers (LTM's 150.10.20.x self IP) is wrong?
The internal VLAN is untagged with 1.1 and external vlan is untagged with 1.2 interfaces and both are UP.
Can someone PLEASE help me identify what I am missing?
Any help is greatly appreciated.
hoolioCirrostratus
Is the client IP address on the same subnet as the member servers? If so, you'll need to use SNAT. If not, try capturing a tcpdump on LTM to see what's happening. You can use syntax like this to write a tcpdump to a binary file:
tcpdump -ni 0.0 -s 0 -w /var/tmp/test.dmp host VIP_IP or host SERVER_IP
To write the packets out to the screen, you can leave off the -w /var/tmp/test.dmp option.
If you need help analyzing the tcpdump you can check SOL411 (Click here) or SOL1893 (Click here) or open a case with F5 Support (Click here).
Aaron