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Hi All,

Yesterday my mailserver crashed, and so I replaced it with an other
one, this meant that some of the nat entries in my C827H should be
changed. I'm not that good with IOS so, I fiddled a bit, but got it
working.

Now, I'm almost happy, after these changes, once in a while, (say 4
times an hour) it stops responding to anything, ping say host is down,
internet traffic is dropped, and after say 15 seconds, the router
starts doing it's stuff again, first ping times are very high (More
then a second, from the inside) but after some moments everything is
okay again. So my guess is something is choking the router, but I
can't find out what.

If anyone has any clue where I should look, please, I checked what I
could think of.
And for the record, below is the output of show runnig-config

Thanks,

Bas


Current configuration : 2229 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname sieb
!
no logging buffered
enable secret 5 $1$1F/N$uamV0YvUMBQSbkX3VYvhC.
enable password <secret>
!
username sieb password 0 <secret>
ip subnet-zero
no ip domain-lookup
ip host laptopjens 10.0.0.15
ip host compaq 10.0.0.16
ip host vergiet 10.0.0.123
ip host sito 10.0.0.13
ip host sieb 10.0.0.137
ip name-server 194.109.6.66
ip name-server 194.109.9.99
ip dhcp excluded-address 10.0.0.137
ip dhcp excluded-address 10.0.0.1 10.0.0.199
ip dhcp excluded-address 10.0.0.13
!
ip dhcp pool CLIENT
network 10.0.0.0 255.255.255.0
default-router 10.0.0.137
dns-server 194.109.6.66 194.109.9.99
domain-name AvB.invalid
lease 0 2
!
vpdn-group 1
request-dialin
protocol pppoe
ip mtu adjust
!
!
!
!
interface Ethernet0
description CRWS Generated text. Please do not delete
this:10.0.0.137-255.255.255.0
ip address 10.0.0.137 255.0.0.0
ip nat inside
ip tcp adjust-mss 1452
no keepalive
hold-queue 100 out
!
interface ATM0
no ip address
atm vc-per-vp 64
no atm ilmi-keepalive
pvc 8/48
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
hold-queue 224 in
!
interface Dialer0
no ip address
no cdp enable
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer remote-name redback
dialer-group 1
ppp authentication pap chap callin
ppp chap hostname kansloos@xs4all-basic-adsl
ppp chap password 7 04565B0F0E205E4A
ppp pap sent-username kansloos@xs4all-basic-adsl password 7
03090B02070E3348
!
ip default-gateway <external ip>
ip nat inside source list 1 interface Dialer1 overload
ip nat inside source static tcp 10.0.0.22 22 <external ip> 22
extendable
ip nat inside source static tcp 10.0.0.22 80 <external ip> 4321
extendable
ip nat inside source static tcp 10.0.0.22 25 <external ip> 25
extendable
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip http server
!
!
access-list 1 permit 10.0.0.0 0.255.255.255
!
line con 0
stopbits 1
line vty 0 4
access-class 23 in
exec-timeout 120 0
password <secret>
login local
length 0
!
scheduler max-task-time 5000
end

well the first thing to do is ensure you have internal syslogging
enabled so you can check any see if there are any message recorded when
issue occurs.

show memory free

conf t
service timestamps debug datetime msec show-timezone
service timestamps log datetime msec show-timezone
logging buffer 10000 debugging ! if you have lot of memory on box
increase the size from 10000
no logging console ! best practice
exit
wri mem


show logging

! check the size of arp cache
sh arp