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Forum Discussion

engtmk's avatar
engtmk
Icon for Nimbostratus rankNimbostratus
Nov 11, 2007

Big IP as default Gateway

I have server that is confgiured with the big ip as its default gateway     but these server cant reach any network outside its networks     so do we have to create routes on the LTM or s...
config
design
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Nov 12, 2007
Are you trying to ping the node using ICMP or open a TCP connection? If ICMP, you'd need to configure the virtual server for all protocols as opposed to TCP or UDP.

 

 

If you're not able to establish a TCP connection through the forwarding virtual server, you could try running a tcpdump on all interfaces and then initiate a TCP connection. Here's an example that would capture traffic on all interfaces (0.0) to/from any hosts on or from port 22:

 

 

tcpdump -n -i 0.0 tcp port 22

 

 

If you find that the requests and responses through the BIG-IP aren't symmetrical, you would need to enable loose initiation and loose close on the FastL4 profile to instruct BIG-IP to allow the packets through (Click here).

 

 

Aaron