Cisco ADSL router sometimes not responding

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 ! username sieb password 0 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 ip nat inside source list 1 interface Dialer1 overload ip nat inside source static tcp 10.0.0.22 22 22 extendable ip nat inside source static tcp 10.0.0.22 80 4321 extendable ip nat inside source static tcp 10.0.0.22 25 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 login local length 0 ! scheduler max-task-time 5000 end
Reply to
Colander
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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

Reply to
Merv

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