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Hi Subbareddy,
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<div class="">SNAT, or source NAT, is the ‘many-to-one’ NAT mode you are referring to. Instances that do not have a floating IP will be NAT’d to the IP address of the qg interface of the router. This is akin to a PAT on other firewalls.</div>
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<div class="">A floating IP is akin to a static 1-to-1 NAT, and takes precedence over the default SNAT behavior.</div>
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<div class="">By setting enable_snat to false, your traffic is being forwarded out of the router as the fixed IP of the instance.</div>
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<div class="">James</div>
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<div class="">On Jan 21, 2015, at 8:15 AM, Chinasubbareddy M <<a href="mailto:chinasubbareddy_m@persistent.com" class="">chinasubbareddy_m@persistent.com</a>> wrote:</div>
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HI all,<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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I would like to understand many to one NAT feature by neutron , so I have created a gateway for router with "enable_snat” on disable mode, now I am confused how to use many to one NAT, can you please guide me ?<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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root@vpnaas1:~# neutron router-show 1dc4a054-1a93-4962-abaa-01f118a77773<o:p class=""></o:p></div>
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+-----------------------+------------------------------------------------------------------------------+<o:p class=""></o:p></div>
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| Field | Value |<o:p class=""></o:p></div>
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+-----------------------+------------------------------------------------------------------------------+<o:p class=""></o:p></div>
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| admin_state_up | True |<o:p class=""></o:p></div>
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| external_gateway_info | {"network_id": "bc9172f9-25e7-454b-a387-d81ee79be74d", "enable_snat": false} |<o:p class=""></o:p></div>
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| id | 1dc4a054-1a93-4962-abaa-01f118a77773 |<o:p class=""></o:p></div>
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| name | router1 |<o:p class=""></o:p></div>
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| routes | |<o:p class=""></o:p></div>
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| status | ACTIVE |<o:p class=""></o:p></div>
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| tenant_id | 4123b6cff1124795959f4dc73e82531a |<o:p class=""></o:p></div>
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+-----------------------+------------------------------------------------------------------------------+<o:p class=""></o:p></div>
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root@vpnaas1:~#<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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<o:p class=""> </o:p></div>
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Regards,<o:p class=""></o:p></div>
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Subbareddy,<o:p class=""></o:p></div>
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Persistent systems ltd.<o:p class=""></o:p></div>
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