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New Member

Nat Misses and Nat slowness

Currently we have a dynamic nat rule and three static nat rules. Whenever the static routes are enabled, Lan users experience long route seek times, takes a long time for a page to actually start loading. Using show ip nat statistics, Hits:4644285 Misses: 70410. Are these misses related to this problem? If not is there a recommended fix to the problem? Thanks in advanced


Re: Nat Misses and Nat slowness

can u pls paste the NAT config ?

New Member

Re: Nat Misses and Nat slowness

interface Vlan1


ip address

no ip redirects

no ip unreachables

no ip proxy-arp

ip nat inside

ip virtual-reassembly

ip route-cache flow

ip tcp adjust-mss 1452

ip http server

ip http authentication local

ip http secure-server

ip http timeout-policy idle 60 life 86400 requests 10000

ip nat inside source list 1 interface FastEthernet4 overload

ip nat inside source static tcp 22 interface FastEthernet4 22


New Member

Re: Nat Misses and Nat slowness

Standard IP access list 1

10 permit, wildcard bits (253 matches)

New Member

Re: Nat Misses and Nat slowness

I found something interesting today. The cisco router is using the interface FastEthernet3 which has no cable attached into it. We only have FastEthernet4 attached with a cable to the Lan. I searched throughout all of the cisco's config files and interface FastEthernet3 does not show up as an interface for traffic. Is this normal?

New Member

Re: Nat Misses and Nat slowness

I am haing the same problem too. If anyone finds a solution, please let me know.