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F5 Default Route
Hi RAQS,
No, if Auto Last Hop is still enable on you F5 BIG-IP.
K13876: Overview of the Auto Last Hop setting (11.x - 16.x)
Auto Last Hop is a setting that allows the BIG-IP system to track the source MAC address of incoming connections and return traffic from pools to the source MAC address, regardless of the routing table.
Regards
Hi Lidev,
Thanks for replying. Can you please elaborate your answer "No". Like for it means we can configure two default routes ?
Regards,
Raqs
- LidevAug 11, 2021MVP
No need, please read K article and you see that Auto Last Hop feature allows packets to be routed without interrogating routing table.
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- RAQSAug 11, 2021Cirrus
As of now i am not seeing any traffic on new range VIP. From Network end all routes are in place and rules are in place in firewall. What check or configuration required at F5 end ?
- LidevAug 11, 2021MVP
Have you added a new self-ip (new subnet) on BIG-IP (Network ›› Self IPs) ?
- RAQSAug 11, 2021Cirrus
Nope. At present we have self IP for old subnet only. Haven't configured self ip for new subnet.
- LidevAug 11, 2021MVP
You have to do this new Self IP declaration to ensure that the routing works.
- RAQSAug 11, 2021Cirrus
Thanks for that information. So in that case need to create VLAN also ? which is define for new subnet. Old subnet and new subnet are in different VLAN.
- LidevAug 11, 2021MVP
Yes and tagged the new VLAN on the F5 interface.
- RAQSAug 11, 2021Cirrus
Thanks Lidev for your help and support.Let me try this and i ll update the thread accordingly.
- RAQSAug 16, 2021Cirrus
Hi Lidev,
We created NEW VLAN, and defined new self IP, but still its not working. What can we try ? Or do i miss anything?
- LidevAug 16, 2021MVP
Hi,
- Global Auto Last Hop setting is enable ? (System > Configuration > Local Traffic > General)
- Ping is ok on new self ip ?
If everything seems OK on BIG-IP configuration, you can do a tcpdump on the F5 BIG-IP to identify root cause of the routing issue.
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