Weird problem.

[nettech101]

Hi Folks. I just setup a 1605R for PPPOE, and Im seeing some weird stuff. Mainly I can't get to most internet sites that I use to be able too. Some are even hit and miss, where they might come up, or not at all. I was lucky to get here. Other sites pop right up. I don't think it's anything in my config, but prob.

Can someone take a look, and see what you think. I've been playing around with it and can't get it. GRRRRRRRRRR....

Heres the config. Thanks for any help.

Gatekeeper#sh conf
Using 1811 out of 7506 bytes
!
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Gatekeeper
!
boot-start-marker
boot system flash c1600-nosy-mz.123-16.bin
boot-end-marker
!
enable secret 5 xxxxxxxxxxxxx.
enable password 7 xxxxxxxxxxxxxxx
!
no aaa new-model
ip subnet-zero
ip dhcp excluded-address 10.0.0.5
!
ip dhcp pool dhcp
network 10.0.0.0 255.0.0.0
default-router 10.0.0.5
dns-server 198.164.30.2
!
vpdn enable
!
vpdn-group pppoe
request-dialin
protocol pppoe
!
username xxxxxxxx password 7 xxxxxxxxxx
!
!
!
interface Ethernet0
description WAN
no ip address
ip nat outside
no ip mroute-cache
pppoe enable
pppoe-client dial-pool-number 1
!
interface Ethernet1
description lan
ip address 10.0.0.5 255.0.0.0
ip nat inside
no ip mroute-cache
!
interface Dialer0
description PPPOE to xxxxxx
mtu 1492
ip address negotiated
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp pap sent-username xxxxxxxx@xxxxxxxxx.net password 7 xxxxxxxxxx
!
router eigrp 1
network 10.0.0.0
auto-summary
!
ip nat inside source list 1 interface Dialer0 overload
ip nat inside source static tcp 10.0.0.5 80 interface Dialer0 80
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
!
!
access-list 1 permit 10.0.0.0 0.255.255.255
access-list 101 permit ip 10.0.0.0 0.0.0.255 10.0.0.0 0.0.0.255
access-list 105 deny ip 10.0.0.0 0.0.0.255 10.0.0.0 0.0.0.255
access-list 105 permit ip 10.0.0.0 0.0.0.255 any
access-list 120 permit tcp any any eq 1718
access-list 120 permit tcp any any eq www
dialer-list 1 protocol ip permit
!
route-map nonat permit 10
match ip address 105
!
!
line con 0
line vty 0 4
password 7 xxxxxxxxxxxxxxxxxxx
login local
!
end

Gatekeeper#

 

[nettech101]

Ok, I have another switch that I'll try when I get home tonight.

Thanks guys for your help, you guys have been great.

Again I'll let you guys know how it goes.

 

[JOAMON]

Just remember that just one switch may not fix the problem as both ethernet ports appear to be affected. If the new switch is not managed it will not help. You would either need a managed switch that you can change the port settings to 10 half or an old 10base-t hub. Can you modify the port settings on your WAN device?

 

[cherisc]

I've seen the same problem with other routers where the MTU size has to be adjusted. Just something to think about.

 

[nettech101]

Update:

I switched out the switch for a dumb 10 meg hub....no change, still can't get to some internet pages.

not sure what else to try.

 

[JOAMON]

When you telnet into the 1605 did you issue the command "terminal monitor"?? This will reveal console port error messages. I still think that there are duplex mis-match issues. Even though you tried a dumb hub on one side the other ethernet port may still have the same problem. Terminal monitor will tell you if there are duplex problems. What type and model is your DSL modem??

 

[daffymd]

I agree with cherisc as I have had a very similar problem which was resolved by reducing the MTU size.

 

[watchguardmonkey]

just change the MTU in the virtual & dialer Interfaces to 1500 to match the ethernet int, really shouldn't make that much difference to reaching web sites, but hey have a go.

 

[nettech101]

I've issued the term mon command, and im not seeing any errors.

MTU is set to 1492, it won't let me set it any higher on on the virtual interface, or the dialer interface.

Still seeing the same behaviour.

The adsl modem is a Comtrend CT-301 an dis 10 meg