2620xm SLOW ADSL when using the WIC-1ADSL

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Jan 6th, 2009
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Hello..

I have a 2620xm router with AT&T DSL 6000/768 service....


When I setup pppoe using the WIC-1ADSL my speed is 2369Kbps... (DSL>>Router>>Lan)


When I setup pppoe with a DSL modem infront of the router my speed is 5460Kbps.... (DSL Modem>>Router>>Lan)


The 2620xm info:

IOS c2600-adventerprisek9-mz.124-19

48mb Flash/256mb Ram

2 FastEthernet interfaces

1 Serial interface

1 ATM interface


Current Config:


!

! Last configuration change at 15:27:30 CDT Tue Jan 6 2009

! NVRAM config last updated at 14:15:59 CDT Tue Jan 6 2009

!

version 12.4

service timestamps debug datetime msec localtime show-timezone

service timestamps log datetime msec localtime show-timezone

service password-encryption

!

hostname xxxxxxx

!

boot-start-marker

boot-end-marker

!

logging count

logging buffered 16000 debugging

logging console informational

enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxx

enable password 7 xxxxxxxxxxxxxxxxxxxx

!

no aaa new-model

clock timezone CDT -6

clock summer-time CDT recurring

no network-clock-participate slot 1

no network-clock-participate wic 0

ip cef

!

ip domain name xxxxxxxxxxxx

ip name-server xxxxxxxxxxxx

ip name-server xxxxxxxxxxxx

ip name-server xxxxxxxxxxxx

ip name-server xxxxxxxxxxxx

ip auth-proxy max-nodata-conns 3

ip admission max-nodata-conns 3

ip ddns update method sdm_ddns1

DDNS both

!

ip ddns update method sdm_ddns2

HTTP

add xxxxxx:xxxxxx-members.dyndns.org/nic/update?system=dyndns&hostname/nic/update?system=dyndns&hostname</A>=<h>&myip=<a>

!

remove xxxxxx:xxxxxx-members.dyndns.org/nic/update?system=dyndns&hostname=<h>&myip=<a>

interval maximum 28 0 0 0

interval minimum 28 0 0 0

!

!

username xxxxxx privilege 15 view root secret 5 xxxxxxxxxxxxxxxxxxxxx

!

!

!

!

buffers tune automatic

!

!

!

interface FastEthernet0/0

description (LAN) xxxxxxxxx-ISA 2006 Server$ETH-LAN$

ip address xxxxxxxxxxxx xxxxxxxxxxxxxxx

ip access-group 100 in

ip helper-address xxxxxxxxxxxxx

ip mask-reply

ip nat inside

ip virtual-reassembly

ip tcp adjust-mss 1460

speed 100

full-duplex

no mop enabled

!

interface Serial0/0

no ip address

shutdown

no fair-queue

!

interface ATM0/1

description (WAN) AT&T ADSL

no ip address

no atm ilmi-keepalive

dsl operating-mode auto

dsl enable-training-log

hold-queue 224 in

!

interface ATM0/1.1 point-to-point

pvc 0/35

pppoe-client dial-pool-number 1

!

!

interface FastEthernet1/0

description (DMZ)

ip address xxxxxxxxxxxx xxxxxxxxxxx

ip helper-address xxxxxxxxxxx

ip nat inside

ip virtual-reassembly

speed 100

full-duplex

!

interface Dialer0

description Virtual Dial Interface

ip ddns update hostname xxxxxxxxxxxxxxx

ip ddns update sdm_ddns2

ip address negotiated

ip mtu 1492

ip nat outside

ip virtual-reassembly

encapsulation ppp

dialer pool 1

dialer-group 1

ppp authentication pap callin

ppp pap sent-username [email protected] password 7 xxxxxxxxxxxxxxxxx

ppp ipcp dns request

ppp ipcp route default

!

ip forward-protocol nd

!

!

ip http server

ip http access-class 1

no ip http secure-server

ip nat inside source list 2 interface Dialer0 overload



*** NAT INFO REMOVED BECAUSE OF SIZE ***



!

logging trap debugging

logging xxxxxxxxxxxx

logging xxxxxxxxxxxx



***ACL LIST REMOVED BECAUSE OF SIZE ***



dialer-list 1 protocol ip permit

snmp-server community public RW

!

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

transport preferred none

speed 115200

line aux 0

line vty 0 4

access-class 101 in

password 7 xxxxxxxxxxxxxx

login

transport preferred none

!

ntp logging

ntp clock-period 17180358

ntp server xxxxxxxxxxx source FastEthernet0/0 prefer

!

end


I have attached some of the SHOW INTERFACE commands......



I know this is a huge post but I am posting all information possible......



Thanks.......I am just not sure if I missed a command somewhere....


I would be thankful for ANY help or information.....


Dave




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SCORPION69 Thu, 01/08/2009 - 17:59
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Well seeing how I got many suggestions and help.....I was persistent in solving the issue......so I dug deep into every bit of Cisco documentation I could find...


The speed issue is resolved...


- Using the WIC-1ADSL


- No DSL modem in front of the router...


- Both Upload/Download speed and latency is actually BETTER than it was before....


Thanks once again.......

Sam Smiley Tue, 03/03/2009 - 13:58
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Hi Scorpion,

I have run into this problem before on 2600XM devices running the C2600-ADVENTERPRISEK9-M IOS. I've run into this on a couple of occasions configuring the 2600XM devices. The way I worked around it was to install a standard IOS image. This gave correct speeds with 2 AT&T installs that I have done.


I would be very interested in how you solved this problem on your install. Please post and let's compare notes.


Regards,

Sam

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