When will L3Switch/Router change the Source IP address

I am doing a PBR to bypass a firewall for voice traffic. We use PBR on core switch to hit Upstream router. When access switch is running ospf to core, traffic initiated from lan hits gateway on access switch then takes ospf transit path.

Will then source IP change? or in generic when will source ip is changed by any L3 device apart from NAT overload. Please suggest.

Hi Sandeep,

Your source IP address won’t change. It only changes when you translate it with NAT.


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