RE: ip nat enable , NVI0 stays administratively down

From: Simon Grace (SimonG@pcsystems.gr)
Date: Mon Oct 15 2007 - 04:18:03 ART

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George,

I haven't had a chance to read this fully and understand it but by the
sounds of it, it should give you some food for thought

http://www.cisco.com/en/US//products/sw/iosswrel/ps5207/products_feature
_guide09186a008041d91a.html

Simon.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
George Goglidze
Sent: Sunday, October 14, 2007 8:35 PM
To: Cisco certification
Subject: ip nat enable , NVI0 stays administratively down

Hello all,

I'm trying to solve this problem I have,
I'm trying to enable natting with virtual interface.

here's config:

ip nat pool NAT_POOL 150.50.5.3 150.50.5.255 prefix-length 24
ip nat inside source list NAT_MATCH pool NAT_POOL

R8#sh access-list NAT_MATCH
Standard IP access list NAT_MATCH
    10 permit 150.50.4.0, wildcard bits 0.0.0.255

R8#sh run int f0/0
Building configuration...

Current configuration : 152 bytes
!
interface FastEthernet0/0
 ip address 150.50.4.8 255.255.255.0
 ip nat enable
end

R8#sh run int s2/0
Building configuration...

Current configuration : 176 bytes
!
interface Serial2/0
 ip address 150.50.5.1 255.255.255.0
 ip nat enable
end

---------------

I think it should be fine, at least according to DocCD it's fine.

but it does not nat, and NVI0 stays in administratively down state.

R8#sh ip int brief
Any interface listed with OK? value "NO" does not have a valid
configuration

Interface IP-Address OK? Method Status
Protocol
FastEthernet0/0 150.50.4.8 YES NVRAM up
up
FastEthernet1/0 unassigned YES NVRAM administratively
down
down
Serial2/0 150.50.5.1 YES NVRAM up
up
Serial2/1 unassigned YES NVRAM administratively
down
down
Serial2/2 unassigned YES NVRAM administratively
down
down
Serial2/3 unassigned YES NVRAM administratively
down
down
NVI0 unassigned NO unset administratively
down
down
Loopback0 200.0.0.8 YES NVRAM up
up

Any suggestions???

by the way it's from ipexpert lab 13 task 2.

Thanks,

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