# F5 ip-forward virtual server migration to a10

**URL:** <https://community.a10networks.com/t/f5-ip-forward-virtual-server-migration-to-a10/767>\
**Category:** ADC - Application Delivery\
**Created:** [March 13, 2023, 7:11pm UTC](https://community.a10networks.com/t/f5-ip-forward-virtual-server-migration-to-a10/767 "2023-03-13T19:11:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Hugo\_Gomez](https://avatars.discourse-cdn.com/v4/letter/h/49beb7/32.png) [@Hugo\_Gomez](https://community.a10networks.com/u/Hugo_Gomez)\
**Post date:** [March 13, 2023, 7:11pm UTC](https://community.a10networks.com/t/f5-ip-forward-virtual-server-migration-to-a10/767/1 "2023-03-13T19:11:14Z")

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Hi guys  
I’m asking for your help to clarify the use of the ip-forward option on F5 devices for virtual-servers, for me looks simple, but I didn’t use it before in our a10 devices

This is an example of the current configuration on F5 that I need to migrate:

}  
ltm virtual DNS\_Telefonica\_171 {  
&nbsp;&nbsp;description “Forwarding DNS 10.161.9.171”  
&nbsp;&nbsp;destination 10.161.9.171:domain  
&nbsp;&nbsp;ip-forward  
&nbsp;&nbsp;ip-protocol udp  
&nbsp;&nbsp;mask 255.255.255.255  
&nbsp;&nbsp;profiles {  
&nbsp;&nbsp;&nbsp;&nbsp;fastL4 { }  
&nbsp;&nbsp;}  
&nbsp;&nbsp;source 10.164.100.138/31  
&nbsp;&nbsp;source-address-translation {  
&nbsp;&nbsp;&nbsp;&nbsp;type automap  
&nbsp;&nbsp;}  
&nbsp;&nbsp;translate-address disabled  
&nbsp;&nbsp;translate-port disabled  
&nbsp;&nbsp;vs-index 3  
}  
ltm virtual LDAP\_TMVE\_171 {  
&nbsp;&nbsp;description LDAP\_TMVE\_171  
&nbsp;&nbsp;destination 10.161.9.171:any  
&nbsp;&nbsp;ip-forward  
&nbsp;&nbsp;mask 255.255.255.255  
&nbsp;&nbsp;profiles {  
&nbsp;&nbsp;&nbsp;&nbsp;fastL4 { }  
&nbsp;&nbsp;}  
&nbsp;&nbsp;source 10.164.100.138/31  
&nbsp;&nbsp;source-address-translation {  
&nbsp;&nbsp;&nbsp;&nbsp;type automap  
&nbsp;&nbsp;}  
&nbsp;&nbsp;translate-address disabled  
&nbsp;&nbsp;translate-port disabled  
&nbsp;&nbsp;vs-index 5  
}

I was searching and it seems I need to use a policy template with a forwarding-policy set, but it is not clear to me.

If you can guide me, I really appreciate it.

Kind regards,

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<div class="post-metadata">

**Author:** ![mmartinez\_a10networks.com](https://avatars.discourse-cdn.com/v4/letter/m/d07c76/32.png) [@mmartinez\_a10networks.com](https://community.a10networks.com/u/mmartinez_a10networks.com)\
**Post date:** [March 14, 2023, 10:17am UTC](https://community.a10networks.com/t/f5-ip-forward-virtual-server-migration-to-a10/767/2 "2023-03-14T10:17:54Z")

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Please have a look in your other post here: