Clearing NAT Translation Entries

Last Updated on Wed, 28 Jun 2023 | Network Design

To clear a dynamic translation entry, use the commands shown in Table D-3.

Table D-3 Commands to Clear NAT Translation Entries

Command	Description
clear ip nat translation*	Clears all dynamic translation entries.
clear ip nat translation inside global-ip local-ip [outside local-ip global-ip]	Clears a simple dynamic translation entry that contains an inside translation or both an inside and outside translation.
clear ip nat translation outside local-ip global-ip	Clears a simple dynamic translation entry that contains an outside translation.
clear ip nat translation protocol inside global-ip global-port local-ip local-port [outside local-ip local-port global-ip global-port]	Clears an extended dynamic entry (in its various forms).

Examples D-5 and D-6 provide two sample outputs using the clear ip nat translation commands.

Example D-5 Clearing NAT Translation Example 1

router#show ip nat translation
Pro Inside global	Inside	local	Outside	local	Outside global
udp 172.16.2.2:1220	10.1.1	.1:1220	172.30.2	.132:53	172.30.2.132:53
tcp 172.16.2.2:11012	10.1.1	.2:11012	172.30.1	.220:23	172.30.1.220:23
tcp 172.16.2.2:1067	10.1.1	.1:1067	172.30.1	.161:23	172.30.1.161:23
router#clear ip nat translation		*
router#show ip nat translation
router#

Example D-6 Clearing NAT Translation Example 2

router#show ip nat translation
Pro Inside global	Inside local	Outside	local		Outside	global
udp 172.16.2.2:1220	10.1.1.1:1220	172.30	2.132	53	172.30	2.132:53
tcp 172.16.2.2:11012	10.1.1.2:11012	172.30	1.220	23	172.30	1.220:23
tcp 172.16.2.2:1067	10.1.1.1:1067	172.30	1.161	23	172.30	1.161:23
router#clear ip nat translation udp inside 172.30.2.132 53 172.30.2.132 53		172.16.2	2 1220 10.1		1.1 1220	outside
router#show ip nat translation
Pro Inside global	Inside local	Outside	local		Outside	global
tcp 172.16.2.2:11012	10.1.1.2:11012	172.30	1.220	23	172.30	1.220:23
tcp 172.16.2.2:1067	10.1.1.1:1067	172.30	1.161	23	172.30	1.161:23

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