Strange PPPOE internet behavior

I recently set up a 2611 router to initiate my PPPOE connection to ATT
DSL. I was able to get the PPPOE to connect and everything seemed to
be working how ever after a few days I started to notice that certain
websites were not coming up. My setup consistes of a 2611 router that
is connecting to the internet, internally this router connects to a
2621 router on a 10.1.2.X network which is also acting as a router on
a stick for vlans that i have setup on a 2924 switch in a 192.168.X.X
network. The problem did not seem to be VLAN specific as at least one
PC on each VLAN could get to the sites that were having issues. The
sites that I noticed that were having issues were Windows Update
(would display a "no network connection" error after searching for
updates), Craigs list ( would go to a page can not be displayed when
trying to post adds) Yahoo groups ( could sign on to groups but once
signed on all links would go to a page can not be displayed error)
Credit card sites ( could sign in but all links once signed in would
go to page can not be displayed). I tried troubleshooting this on the
Windows end first by engaging Microsoft support, but we were able to
determine that there was an issue with the network as once I replaced
the 2611 with the linksys that I was using previously everything
worked. Before taking the 2611 down I was able to do a packet sniff
with Ethereal of a succesfull and failed windows update, the only
glaring issue that i saw was that on the failed windows update I was
getting alot of check sum errors which after researching looked like
they were coming from the Gig NIC. Below is the config that I was
using on the 2611, any insite or thoughts on this strange issue would
be appriciated.
2611 Config
=========================
Using 3078 out of 29688 bytes
version 12.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname crossbonesEdge
boot-start-marker
boot-end-marker
no aaa new-model
ip subnet-zero
no ip source-route
no ip domain lookup
no ip bootp server
ip cef
vpdn enable
vpdn-group 1
request-dialin
protocol pppoe
interface Ethernet0/0
description Connection to Internet
no ip address
no ip redirects
no ip unreachables
full-duplex
pppoe enable
pppoe-client dial-pool-number 1
interface Ethernet0/1
description Connection to Crossbones
ip address 10.1.2.253 255.255.255.0
no ip redirects
no ip unreachables
ip nat inside
full-duplex
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname [email protected]
ppp chap password 7 XXXXXXXXXX
ppp pap sent-username [email protected] password 7 XXXXXXXXX
router eigrp 100
network 10.1.2.0 0.0.0.255
auto-summary
ip nat inside source list 1 interface Dialer1 overload
ip nat inside source static tcp 192.168.7.10 1495 interface Dialer1
1495
ip nat inside source static tcp 192.168.7.15 3389 interface Dialer1
3389
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
logging 192.168.7.16
access-list 1 permit 10.1.2.0 0.0.0.255
access-list 1 permit 192.168.0.0 0.0.255.255
dialer-list 1 protocol ip permit
no cdp run
snmp-server community public RO
line con 0
exec-timeout 15 0
password XXXXXXXXXXXX
logging synchronous
login
length 22
history size 30
line aux 0
exec-timeout 5 0
login
length 22
transport output none
line vty 0 4
exec-timeout 20 30
password XXXXXXXXXXXX
login
length 22
history size 30
end

hi, on eth 0/1
ip tcp adjust-mss 1452
or
ip adjust-mss 1452
if you cannot enter any of the two option, upgrade ios.

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Aug 20 17:27:40 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000000001602 0000000000000016 000000000000000e 0000000010009e90
Aug 20 17:27:40 paris %l4-7: 0000000000000000 0000000000000000 000000000000000c 000000001040c140
Aug 20 17:27:45 paris genunix: [ID 723222 kern.notice] 000000001040c1e0 unix:prom_rtt+0 (10000000, 16, f0000000, 1041b130, 3000005f548, 0)
Aug 20 17:27:48 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000000000002 0000000000001400 0000008800001401 0000000010026e4c
Aug 20 17:27:48 paris %l4-7: 00000000f0050dc0 00000000f00676a8 000000000000000c 000000001040c290
Aug 20 17:27:52 paris genunix: [ID 723222 kern.notice] 000000001040c330 unix:client_handler+2c (f0067138, 2a10001bc48, 20, 10428288, 1, 1041a970)
Aug 20 17:27:55 paris genunix: [ID 179002 kern.notice] %l0-3: 000000001041a788 0000000000000000 000000001040e400 0000000000000001
Aug 20 17:27:55 paris %l4-7: 0000000000000016 000000000000000e 0000000000000016 000000000023f0e0
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Aug 20 17:28:02 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000010026ad4 0000000000000016 0000000000000009 0000000010009c78
Aug 20 17:28:02 paris %l4-7: 000000001041b130 0000000000000016 0000000000000001 000002a10007d7f0
Aug 20 17:28:07 paris genunix: [ID 723222 kern.notice] 000002a10001bc60 unix:debug_enter+d0 (0, 30000fdf910, 0, 10, 0, 3000006a098)
Aug 20 17:28:09 paris genunix: [ID 179002 kern.notice] %l0-3: 000003000002da00 0000030000f70000 0000000000000000 00000300016943f0
Aug 20 17:28:09 paris %l4-7: 0000000000000000 00000300016943e0 00000300007a1f28 0000000000000000
Aug 20 17:28:13 paris genunix: [ID 723222 kern.notice] 000002a10001bd30 su:async_rxint+218 (30000fdf910, 3000107a088, 1000, ff, 0, 2000)
Aug 20 17:28:16 paris genunix: [ID 179002 kern.notice] %l0-3: 000000001013c6b4 000003000107a089 000003000105a086 0000000000000001
Aug 20 17:28:16 paris %l4-7: 0000030000fdf910 00000000000000f6 000003000105a000 0000000000006000
Aug 20 17:28:21 paris genunix: [ID 723222 kern.notice] 000002a10001bde0 su:asyintr+134 (6, 30000fdf910, 6, 10441de0, 10072068, 300001b7000)
Aug 20 17:28:24 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000000000000 00000000001298dd 0000000000000000 000003000006a088
Aug 20 17:28:24 paris %l4-7: 00000300000578c8 000003000078fea8 0000000000000000 000003000078fed0
Aug 20 17:28:28 paris genunix: [ID 723222 kern.notice] 000002a10001be90 pcipsy:pci_intr_wrapper+64 (1047e2d8, 7e9, 1, 30000074148, 30000063208, 300001303c8)
Aug 20 17:28:32 paris genunix: [ID 179002 kern.notice] %l0-3: 000000001026fca4 0000000000000000 0000000000000000 0000030000073c28
Aug 20 17:28:32 paris %l4-7: 000000001158ff20 0000000000000000 0000000000000000 0000000000000000
Aug 20 17:28:36 paris genunix: [ID 723222 kern.notice] 000002a10001bf50 unix:current_thread+44 (2a10001fd40, 1041b130, 300011de010, 10423840, 16, 0)
Aug 20 17:28:39 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000010007450 000002a10001f151 000000000000000c 000002a10001bf50
Aug 20 17:28:39 paris %l4-7: 0000000000000000 0000000000000000 0000000000000000 000002a10001fa00
Aug 20 17:28:44 paris genunix: [ID 723222 kern.notice] 000002a10001faa0 unix:idle+54 (1040f850, 0, 0, 1041b130, 3000005f548, 0)
Aug 20 17:28:46 paris genunix: [ID 179002 kern.notice] %l0-3: 00000000100416c4 0000000000000000 0000000000000000 000002a1000b7d40
Aug 20 17:28:46 paris %l4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Aug 20 17:28:51 paris unix: [ID 100000 kern.notice]
Aug 20 17:28:51 paris genunix: [ID 672855 kern.notice] syncing file systems...
Aug 20 17:29:04 paris genunix: [ID 433738 kern.notice] [2]
Aug 20 17:29:04 paris genunix: [ID 733762 kern.notice] 12
Aug 20 17:30:47 paris genunix: [ID 433738 kern.notice] [2]
Aug 20 17:37:27 paris last message repeated 9 times
Aug 20 17:37:29 paris genunix: [ID 616637 kern.notice] cannot sync -- giving up
Aug 20 17:37:30 paris genunix: [ID 353387 kern.notice] dumping to /dev/dsk/c0t0d0s1, offset 214827008
Aug 20 17:37:38 paris genunix: [ID 409368 kern.notice] 100% done: 10582 pages dumped, compression ratio 3.80,
Aug 20 17:37:38 paris genunix: [ID 851671 kern.notice] dump succeeded
Any ideea what is wrong with my machine ?
Thank you,
Razvan

Hi Chandra,
unfortunately I can't stop the whole database just because of this "little" problem. And don't even know if it really helps. Now I'm installing the same SW on VMWare server. Hope, that it will help me reproduce this problem and then I can try this patch.
Thank you, however, for your suggestion.
Robert

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Thanks in advance.

Please test after taking each of the following steps that you haven't already tried. Stop when the problem is resolved. Back up all data before making any changes.
Step 1
Take the applicable steps in this support article. The Wireless Diagnostics program generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 2
Disconnect all USB 3 devices. If you don't know which are USB 3, disconnect all USB devices except keyboard and mouse.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. If you find that Wi-Fi works better with Bluetooth disabled, you should use the 5 GHz Wi-Fi band. Your router may not support it; in that case, you need a new router.
Step 4
Open the Network pane in System Preferences and make a note of your settings in the Wi-Fi service. It may be helpful to take screenshots of the various tabs in the preference pane. If the preference pane is locked, unlock it by clicking the padlock icon and entering your administrator password. Delete Wi-Fi from the service list on the left by selecting it and clicking the minus-sign button at the bottom. Then recreate the service by clicking the plus-sign button and following the prompts.
Step 5
Reset the System Management Controller.
Step 6
Reset the PRAM.
Step 7
Launch the Keychain Access application. Search for and delete all AirPort network password items that refer to the network. Make a note of the password first.
Step 8
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.

PPPoE internet on Parallels

G'day Chaps,
Have just changed my internet connection from a wireless one to using PPPoE. The internet on my Mac is working fine, but now I cannot connect using Parallels Windows XP. It worked fine previously, and I don't remember having to make any setting changes at all (although my memory may have failed me).
So I have all of the settings that I am using on my Mac PPPoE, how do I plug that in to windows on Parallels to make it work?
Many thanks,
damo.

turned out just to be an internet preference setting in Windows.
thanks for all your replies (ummm)

Pppoe internet setup probs via ADSL

Hi I'm using Solaris 9 on X86 system with a NIC 3com 3C509C-TX-M.
I used the direction for pppoe setup from http://home.earthlink.net/~jaymzh666/solaris/spppoe.html
and it all seemed to do as per there instructions.
I'm able to get connected as shown on my file below taken from my terminal window: and showing my Point to Point is UP.
# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
# ifconfig elxo0 up
ifconfig: setifflags: SIOCGLIFFLAGS: elxo0: no such interface
# /usr/bin/pppd call MyBigpond
# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
sppp0: flags=10008d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST,IPv4> mtu 1492 index 2
inet 144.137.194.1 --> 172.31.28.24 netmask ffff0000
ether 0:0:0:0:0:0
# ifconfig elxl0 plumb
# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
sppp0: flags=10008d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST,IPv4> mtu 1492 index 2
inet 144.137.194.1 --> 172.31.28.24 netmask ffff0000
ether 0:0:0:0:0:0
elxl0: flags=1000842<BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 0.0.0.0 netmask 0
ether 0:4:75:da:34:72
# ifconfig elxl0 up
# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
sppp0: flags=10008d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST,IPv4> mtu 1492 index 2
inet 144.137.194.1 --> 172.31.28.24 netmask ffff0000
ether 0:0:0:0:0:0
elxl0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 0.0.0.0 netmask ff000000
ether 0:4:75:da:34:72
# ping www.sun.com
ping: unknown host www.sun.com
I end up with a dynamic IP of 144.137.194.1 in the particular session.
My problem is where to go to from here when I try to ping to check the connection I get "unknown host" So I'm a little lost. I can see that the connection has been made and my ISP has allocated an IP address. I've tried to use netscape and keeps telling it cant find any url's.
So I'm pretty sure I've missed a step somewhere. Anyone have any ideas of what I need to do to actually be able to surf the net or test the connection.
Thanks Shane

Hi Lee,
Well checked the file and it's there and still can't connect to internet or ping even thought the connection is made and all NIC and PPPOE are up:
# /etc/nsswitch.files:
# An example file that could be copied over to /etc/nsswitch.conf; it
# does not use any naming service.
# "hosts:" and "services:" in this file are used only if the
# /etc/netconfig file has a "-" for nametoaddr_libs of "inet" transports.
passwd: files
group: files
hosts: files dns
ipnodes: files
networks: files
protocols: files
rpc: files
ethers: files
netmasks: files
bootparams: files
publickey: files
# At present there isn't a 'files' backend for netgroup; the system will
# figure it out pretty quickly, and won't use netgroups at all.
netgroup: files
automount: files
aliases: files
services: files
sendmailvars: files
printers: user files
auth_attr: files
prof_attr: files
project: files
and doing an ifconfig I get this
ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
# ifconfig elxl0 plumb
# ifconfig elxl0 up
# /usr/bin/pppd call MyBigpond
# Apr 25 12:06:48 Home sendmail[264]: [ID 702911 mail.alert] unable to qualify my own domain name (localhost) -- using short name
Apr 25 12:06:48 Home sendmail[263]: [ID 702911 mail.alert] unable to qualify my own domain name (localhost) -- using short name
# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
elxl0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 0.0.0.0 netmask ff000000
ether 0:4:75:da:34:72
sppp0: flags=10008d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST,IPv4> mtu 1492 index 3
inet 144.137.199.22 --> 172.31.28.24 netmask ffff0000
ether 0:0:0:0:0:0
# ping www.sun.com
ping: unknown host www.sun.com
# netstat -i
Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
lo0 8232 loopback localhost 450 0 450 0 0 0
elxl0 1500 0.0.0.0 0.0.0.0 57 0 58 0 0 0
sppp0 1492 172.31.28.24 144.137.199.22 55 0 56 0 0 0
So I'm not sure what I'm doing wrong all connections are up and dynamic IP is allocated. Any ideas on whats wrong ??
Shane

Strange PPPOE internet behavior

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