Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

Cisco 2610 12.3.5 NAT Bug?

So... I've been running many versions of IOS on many routers and never had any problems with CBAC Firewall, NAT, public IP on the outside, private range on the inside - fairly straightforward. On this particular router, I've been running software with the IP/FW/IDS PLUS IPSEC 3DES feature set from probably 12.2.8T through 12.3.3a with no problems, the configuration hasn't really changed much.

However, with my working configuration on 12.3.3a, I tried out the new Nov-17 build of 12.3.5 and mysteriously none of my outside NAT translations go through to internal machines. I verified that there is no access list denying the packets on the outside interface - specific ACL permits with log showed this, and the NAT translation was being created according to debug as well... I spent 30 minutes trying to figure out what was going on.. I reloaded the old 12.3.3a IOS with exactly the same configuration and it works fine now.

Is this a bug? I did find this very strange.

Ryan

2 REPLIES
VIP Purple

Re: Cisco 2610 12.3.5 NAT Bug?

Hello,

I checked the bug toolkit, not really much there, except for a possible problem with multiple inside IPSec clients and CEF enabled. Recommended workaround: disable CEF. Not sure if this applies to you.

Regards,

Georg

New Member

Re: Cisco 2610 12.3.5 NAT Bug?

I too experiance these strange behaviors. i used 12.3.5. on a 3620 but allso downgraded again becuse it misteriqously stoped working without any notification within 5mins of booting.

117
Views
0
Helpful
2
Replies
CreatePlease to create content