Manualshelf

Troubleshooting guide

ManualsBrandsCisco ManualsComputer equipment827 - 827 Router - EN
51525354555657585960
Dialer interface.
Optional: NAT Pool, if additional IP addresses have been provided by your ISP.♦
Optional: Static NAT, if Internet users require access to internal servers.♦
Configure each PC client with an IP address, subnet mask, default gateway, and Domain Name
System (DNS) server(s).
Alternatively, if you want the Cisco DSL Router to assign your PC clients dynamic IP addresses,
configure each PC to obtain an IP address and DNS server(s) automatically via DHCP.
•
Possible Required Configuration Steps on the PC
If your Cisco DSL Router software supports the ip tcp adjust−mss 1452 or ip adjust−mss
1452 configuration commands, no further action is needed and you can continue with the Configuration
section.
If your Cisco DSL Router software does not support the ip tcp adjust−mss 1452 or ip
adjust−mss 1452 configuration commands, you must change the maximum transmission unit (MTU)
size on each PC in your LAN that will have access to the Internet through the Cisco DSL Router. To change
the MTU size, follow the steps below.
Download the latest version of the Dr. TCP utility from http://www.dslreports.com/front/drtcp.html.1.
Refresh your browser page to ensure the page is current.2.
Run the Dr. TCP utility.3.
From the menu choose your Ethernet adapter.4.
In the MTU field, type 1492.5.
Click Apply to save the change, and then click Exit.6.
Reboot the PPPoE PC client.7.
The registry change is saved when the procedure finishes. Therefore, you only need to run the utility once per
PC.
Configuration
Tip: If you are not familiar with configuring Cisco devices and would like to follow a step−by−step
configuration, click here.
Cisco DSL Router with a Static IP Address
!−−− Comments contain explanations and additional information.
service timestamps debug datetime msec
service timestamps log datetime msec
vpdn enable
no vpdn logging
vpdn−group pppoe
request−dialin
protocol pppoe
!−−− These commands are needed only on Cisco IOS Software older than 12.2(13)T.
!
!
ip subnet−zero
!
Cisco DSL Router Configuration and Troubleshooting Guide