04-20-2012 10:00 AM - edited 03-04-2019 04:06 PM
Hi All,
I've got a new 891 to replace an old 837 and I'm struggling to get the dynamic nat pool working.
I've successfully configured the dialer etc for PPPoE and when I set up a static NAT translation between my PC and an external address then I can ping hosts on the internet e.g. ping 8.8.8.8 successfully. But when I remove the static translation and try and use the dynamic NAT pool then no NAT translations take place, and show ip nat translations only shows the other static entries.
The relevant bits of the config are below and I've also attached a full (cleaned) config.
I've been at this a few days now so any pointers would be much appreciated
ip nat pool TestPool 81.2.123.226 81.2.123.226 netmask 255.255.255.248
ip nat inside source list 15 pool TestPool overload
! Can only access internet when static route is defined for my PC
! If I remove this line then it doesn't use the dymnamic pool TestPool
ip nat inside source static 172.16.0.11 81.2.123.226
!
! Add static NAT translations for SIP phones and server.
!
ip nat inside source static 172.16.0.2 81.2.123.228
ip nat inside source static 172.16.0.3 81.2.123.229
ip nat inside source static 172.16.0.4 81.2.123.230
!
ip route 0.0.0.0 0.0.0.0 Dialer1
!
access-list 15 permit 172.16.0.0 0.0.0.128
04-20-2012 12:46 PM
Try this and let me know.
Please remove this line.
no ip nat inside source list 15 pool TestPool overload
and apply this instead.
ip nat inside source list 15 interface Dialer1 overload
interface GigabitEthernet0
no ip address
no ip tcp adjust-mss 1452
interface Dialer1
ip mtu 1492
Thanks
04-20-2012 01:16 PM
Hi,
Thanks, but that didn't make any difference, I made those amendments and as soon as I removed the line
ip nat inside source static 172.16.0.11 81.2.123.226
It failed to apply the dynamic NAT translation.
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