Re: Nat Problem

From: Songbin Wei (sbwei_2000@yahoo.com)
Date: Fri Jun 06 2003 - 20:09:22 GMT-3


your outside global address range is:
153.1.200.20 153.1.200.25 mask 28

which is on the different subnet from your FR
link's(since the mask is 28 bits). therefore, R9
doesn't know how to return the ping...

--- kasturi cisco <kasturi_cisco@hotmail.com> wrote:
> Group,
>
> I am trying simple NAT. Due to shortage of PCs i am
> having two routers on
> inside (Ethernet 0) of R5 as the 2 inside devices. i
> am trying to ping
> far end loopback and somehow it fails. I am unable
> to understand what i
> am missing. Here is config and toplogy, the routing
> table shows the entry
> in routing table.
>
> | --------- R5--------------------R9
> -----loo0 153.1.12.9
> | e0 s0 s0
> |
> |----------|
> | |
> 10.1.1.2 10.1.1.4
>
> ==========================
> R5 Config:
> interface Ethernet0
> ip address 10.1.1.1 255.255.255.0
> ip nat inside
> no keepalive
> !
> interface Serial0
> no ip address
> encapsulation frame-relay
> no fair-queue
> clockrate 64000
> no arp frame-relay
> no frame-relay inverse-arp
> !
> interface Serial0.1 point-to-point
> ip address 153.1.200.5 255.255.255.240
> ip nat outside
> frame-relay interface-dlci 102
>
> router ospf 100
> log-adjacency-changes
> network 153.1.0.0 0.0.255.255 area 0
> !
> ip nat pool local 153.1.200.20 153.1.200.25
> prefix-length 28
> ip nat inside source list 10 pool local
> ip classless
> ip http server
> !
> access-list 10 permit 10.1.1.0 0.0.0.255
> !
>
> On R5 its shows the translations:
> R5#show ip nat translations
> Pro Inside global Inside local Outside
> local Outside
> global
> --- 153.1.200.20 10.1.1.2 ---
> ---
> --- 153.1.200.21 10.1.1.1 ---
> ---
> --- 153.1.200.22 10.1.1.4 ---
> ---
> --- 153.1.200.23 10.1.1.8 ---
> ---
>
> Thanks for ur answers and time.
>
> Bye,
> Kasturi.
>
>
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>
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This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:10:54 GMT-3