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Cisco Bug: CSCtf36262 - ARP for NAT inside global is deleted after dynamic translation expires

Last Modified

Feb 02, 2017

Products (2)

  • Cisco IOS
  • Cisco Unified MeetingPlace 8.5

Known Affected Releases

12.4(20)T6 12.4(24)T 12.4(24)T4 12.4(24)T5 12.4(24)T5.2 15.0

Description (partial)

None
Symptom:
If an Access Control List (ACL) for the NAT inside local address and the NAT pool for the inside
global addresses overlap, after a dynamic translation expires, the ARP entry for the inside global
address is deleted. This results in the failure of outside-to-inside static translations that rely
on a cached ARP entry.


Conditions:

ip nat pool test-pool 10.1.1.1 10.1.1.1 prefix-length 24
ip nat inside source route-map test-rm pool test-pool overload
ip nat inside source static tcp 192.168.1.1 23 10.1.1.1 23 extendable
!
ip access-list extended test-acl
  permit ip host 192.168.1.1 any
!
route-map test-rm permit 10
  match ip address test-acl
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Bug Details Include

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  • Status
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