ip proxyarp-subnetoption

To enable proxy ARP subnet check, use the command ip proxyarp-subnetoption in Global Configuration Mode. When subnet check is enabled, iSS acts as ARP proxy for target address in different subnet. The no form of this command disables proxy ARP subnet check. iSS acts as ARP proxy for target address in same or different subnet that is used in IP-DSLAM (Digital Subscriber Line Access Multiplexer) case, when subnet check is disabled.