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How chang IP informaton for PIX515E

Unanswered Question
Feb 18th, 2006
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Due to change ISP,I have to change the IP and default gatway for PIX. Can you advice how to do it? change IP,submask,gateway.

I ever tried to setup new IP address for PIX by

IP address 218.xx.xx.xx

setup static route

Rout outside 0 0 218.xxx.xx.xx

but i wondering f i delete the old Ip and static route before setup new?

How to delete it? can you show me the step by step what should do?

Many Thanks


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Harold Ritter Sat, 02/18/2006 - 07:42
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  • Cisco Employee,

Remove the current default route before you add the new one.

no route 0 0

Hope this helps,

defall2005 Sat, 02/18/2006 - 10:58
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sh route and get

outside route 0 0 sss.sss.sss.sss other static

inside route ddd.ddd.ddd.0 submask rrr.rrr.rrr.1 conect static

outside route xxx.xxx.xxx.xxx sss.sss.sss.sss conect static

is that means as i remove last route then it will work.

can anybody explain what different between two outside route sentence.

Harold Ritter Sat, 02/18/2006 - 11:35
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  • Cisco Employee,

The last two routes are added automatically by the PIX software and represent the locally connected subnets. No need to touch those.

you should change the ip address of the outside interface with the new address assigned by the provider using the following command:

ip address outside

and change the static default route to point to the new address on the provider side.

no route outside 0 0

route outside 0 0

Hope this helps,

defall2005 Sun, 02/19/2006 - 18:47
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that's great.Thanks.

I still have a problem, after i changed IP and default gateway.

i.e. i setup new IP as and new gateway is

then i run

#show route

outside 2.2.2.XXX(wrong IP) connect static

i do not what this wrong IP is. How can it come. I did not setup it.

Harold Ritter Sun, 02/19/2006 - 19:16
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  • Cisco Employee,

This route you are seeing is automatically generated from the "ip address outside " command you entered. So there must be something wrong with the information you use on this command.

Can you please let us know what command you entered to get that result.


defall2005 Sun, 02/19/2006 - 19:33
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yes, that's the problem could be. i do not aware what the other guy do the details on the PIX.I be told the guy did below actions,

ip address outside

no route 0 0

router outside 0 0

But according your question, if the guy did "ip address outside " command, how to remove it.I ever try type "no ip address outside " but failed.


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