NAT and ARP question

From: D R (deep.ratan@gmail.com)
Date: Wed Jan 04 2006 - 12:26:49 GMT-3

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Hi Group,
I'm NATing an address that lives over the WAN but my router shows it as an
ARP entry on the LAN interface. I'm afraid I don't understand this at all.
Can somebody please explain?

TIA.

fwb#show run | i 10.188.1.4
ip nat outside source static 10.1.2.98 10.188.1.4
ip route 10.188.1.4 255.255.255.255 Serial0/0.500

fwb#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.188.1.250 205 000f.f861.7c00 ARPA FastEthernet0/1
Internet 10.188.1.4 - 0012.00d8.88c1 ARPA FastEthernet0/1
Internet 10.188.1.2 - 0012.00d8.88c1 ARPA FastEthernet0/1

Building configuration...

Current configuration : 7339 bytes
!

hostname fwb

!
interface Loopback0
 ip address 10.128.4.216 255.255.255.255
!
interface Loopback10
 ip address 10.114.0.119 255.255.255.255
!
interface Serial0/0
 bandwidth 1536
 no ip address
 encapsulation frame-relay IETF
 load-interval 30
 priority-group 1
 down-when-looped
 cdp enable
 frame-relay lmi-type ansi
!
interface Serial0/0.500 point-to-point
 ip unnumbered Loopback10
 ip nat outside
 frame-relay interface-dlci 500 IETF
!
interface FastEthernet0/1
 ip address 10.188.1.2 255.255.255.0
 ip access-group ABC in
 ip nat inside
 speed 100
 full-duplex
!
ip nat inside source static 10.110.40.9 10.128.4.222
ip nat inside source static 10.110.40.8 10.128.4.221
ip nat inside source static 10.110.40.7 10.128.4.220
ip nat outside source static 10.1.2.98 10.188.1.4
ip classless
ip route 10.110.40.7 255.255.255.255 10.188.1.250
ip route 10.110.40.8 255.255.255.255 10.188.1.250
ip route 10.110.40.9 255.255.255.255 10.188.1.250
ip route 10.128.4.208 255.255.255.240 Null0
ip route 10.188.1.4 255.255.255.255 Serial0/0.500
ip route 62.6.99.108 255.255.255.255 Serial0/0.500
ip tacacs source-interface Loopback0
no ip http server
!
!
ip access-list extended ABC
 permit tcp host 10.110.40.7 host 10.188.1.4 eq 2002
 permit tcp host 10.110.40.8 host 10.188.1.4 eq 2002
 permit tcp host 10.110.40.9 host 10.188.1.4 eq 2002
 deny ip any any log
logging source-interface Loopback0

• Next message: Schulz, Dave: "RE: network statement(fr the more specific) needed for eigrp"
• Previous message: 6M: "Re: TCL on ISRs (2/3800 series)"
• Next in thread: Leigh Harrison: "Re: NAT and ARP question"
• Maybe reply: Leigh Harrison: "Re: NAT and ARP question"
• Maybe reply: D R: "Re: NAT and ARP question"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

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