Router Basics

[WindowsXP & 2000 Telnet][Telnet/Advanced Troubleshooting] [reboot default]

[HOSTMAPPING] [Forcing DNS with DHCP] [DHCP] [SETTING ROUTER LAN IP]

[PCanywhere] [Find My IP Address]

Objective

A. Browse to and through the Efficient Networks 5861 router.

B. Basic and Advanced troubleshooting including Telnet

Basic Troubleshooting

A. Sync.

PWR, TEST, LINK lights should be solid green.
Verify physical cables.
If no sync, troubleshoot and if needed call the correct departments.

B. Isolate

No extra cables attached to the router.
Have only 1 computer going to router.
No HUBs/Routers and no other computers.

C. Power Cycle

Try 3 to 5 minute power cycle (must be at least 3 min.).

D. Do not use the connection Manager Software.

E. Browse to 192.168.254.254 (open browser and type in the IP).

If shows "Connected" you are done, now try surfing.
a. If cannot browse check Internet options (LAN settings, etc.) and check to make sure they are still mapped at the Redback.
Idle

a. Double check user name and password.
By "Change Login" button (remember to use "userid@static_ameritech.net" for static customers).
b. If still flashing "Idle", reset password and try again.
c. Create a new user name and password (in IAF). This will be a Dynamic account. If you can connect with this account, it is a static IP issue, call provisioning.
d. Check threshold - See advanced Troubleshooting.
e. Could be a hung connection. This means the access server on Ameritech DSL does not recognize the router has been disconnected from the network. So the Ameritech server still thinks the router is logged in and therefore the router cannot connect, regardless of the user name & password being used. This can only be cleared out from the Redback router. Contact ASI or through a Tier II trouble ticket.
f. If all else fails, and you can Telnet into router, you can try to restore to default.

F. Unable to browse to 192.168.254.254.

Check TCP/IP properties for NIC (the 1 connected to router).

a. Make sure it is set to obtain IP automatically.
b. Set default gateway and DNS to nothing.

2. Not using the default settings (may have changed the IP address of the router), this is now "Best Effort".

a. If they know the IP address use it.
b. If still can't browse set computers IP to one of the routers IPs (If routers IP is 10.0.0.1, make the computer's IP 10.0.0.2) and set subnet mask to 255.255.255.0. Set default gateway and DNS to IP of the router.

3. Check browser setting for proxy and disable it.

Telnet/Advanced Troubleshooting

Windows ME, etc. Telnet TOP

WindowsXP & 2000 Telnet Top

If still flashing "Idle" check threshold script.
1. Open Telnet (Start>Run>telnet)
2. Change the buffer size to 999 (go to Terminal>Preferences) change buffer size from 25 to 999 and click OK.
3. Go to Connect>Remote System, then in remote system type in Default IP address (192.168.254.254)
4. It will ask for "Login", type "admin" (enter).
5. Type "rem list" (enter).
6. Then scroll all the way to the top (will be a long list).
   Go down (about 12 lines or so) and look for an entry label utilization threshold. it needs to be at    or under 50%.
   Example of what you will see:
        Utilization threshold....................................75% <--------------------WRONG!
        Use periodic LCP pings.................................yes
        Accept LAN configuration..............................no
        1. HSD telephone number, speed auto 0*35 <-----------------------------WRONG!
        2. HSD telephone number, auto speed         <-----------------------------WRONG
7. Change it by typing "rem setbwthresh 50 internet" (enter) "rem delphone hsd 1 internet" (enter)
8. Type "save" (enter).
9. Type "reboot" (enter).
10. Let it reboot.
If still flashing "Idle" restore to default - This does not remove the PPPoE script. Do not use the paperclip restore. Note - If the PPPoE script has been modified, this will not fix it.

1. Open Telnet (Start>Run>telnet)

2. It will ask for Login, type "admin" (enter)

3. Type "reboot default" (enter)

C. Windows XP/2000/NT telnet [Advanced Trouble] [Top]

1. Telnet on win2000/XP is the same. Start>Run>, type "telnet", type "open" (enter) then the IP address (192.168.254.254). Use the default buffer to hold a 'rem list' command.

2. Telnet on winNT - the default buffer may not be able to scroll back to the top of the screen. To fix this:

a. Create a shortcut to telnet (go to winnt/system32 and right click on telnet and select "create shortcut").

b. Cut and Paste the shortcut to the desktop.

c. Right click and select "Properties". Go to the options tab and set buffer size to 999.

d. Then go to the layout tab and change screen buffer size "Height" to 999.

e. Close properties window and double click on the shortcut to open Telnet with a scoll bar.

HOSTMAPPING

A. Our Scope - We support Hostmapping, but only by giving the command and the settings for the computer(s) that will be hostmapped. We then verify with the 'sys list' command that the router took the hostmapping.

B. Hostmapping: customer can map the IPs from the WAN side to a computer on the LAN side in a direct 1 to 1 mapping. Meaning if you PING a static IP they are assigned, it will hit the router, the router will forward the PING to the LAN IP you hostmapped it to. So, a customer can have a LAN web server that can be reached by one of his static IP addresses. This makes the LAN computer completely open to the internet. The IP of the actual LAN server will be assigned manually. If using default settings on the router, this manually assigned IP should be outside of the DHCP range and be something like 192.168.254.101-192.168.254.105. Also set the subnet mask to 255.255.255.0 and the default gateway and DNS to the routers LAN IP.

C. We will be using IPs 192.168.254.101-192.168.254.105 in this example.

1. The computer(s) that will be hostmapped to must have one of these static IPs in TCP/IP (NIC connected to router).

a. All other computers can be DHCP (they will be mapped by NAT).

2. Open Telnet (Start>Run>telnet).

3. Go to Connect>Remote System, then in remote system type in default IP address (192.168.254.254) * if only hostmapping 1 computer go to step 4b.

4. Example - Type "sys addhostmapping 192.168.254.101(space)192.168.254.105(space)67.36.6.161" (enter).

a. What this means: sys addhostmapping <first manually assigned private IP in range><last private IP in range><first IP in the block of public IPs assigned>

b. * for hostmapping one computer type "sys addhostmapping(space)192.168.254.101(space)192.168.254.101(space)67.36.6.161".

5. Type "save" (enter).

6. Type "reboot" (enter).

Delete hostmapping

delhostmapping <1st private IP>(space)<last private IP>(space)<1st public IP>

Type "save" (enter).

Type "reboot" (enter).

7. Now type "sys list" to verify that the router took the hostmapping (you will see the mapping automatically filled in).

JUST TO KNOW Top

A. DHCP

1. To disable DHCP:

a. First find the subnet network IP that DHCP is using.

1. Type "dhcp list" (enter). This should show subnet network or number and internal IP addresses.

2. Type "dhcp disable<subnet network>" (enter).

3. Type "save" (enter).

4. Type "reboot" (enter).

2. To Re-Enable DHCP:

a. Check to see that it is disabled.

1. Type "dhcp list" (enter). You should see the subnet number listed as disabled.

2. Type "dhcp enable<subnet network>" (enter).

3. Type "save" (enter).

4. Type "reboot" (enter).

3. If customer has changed LAN IP address and DHCP is enabled or they re-enabled it, DHCP will automatically rebuild it's address pool around the new IP address.

4. DHCP by default sets a scope of a range of IPs unless changed, it will always stay this way.

5. DHCP will use the IP of the router by default if no DNS is specified.

6. Forcing DNS with DHCP: If DNS is down and you need to have the DHCP server on the router broadcast a different DNS server address, type:

a. "dhcp set valueoption 6 <primaryDNS><secondaryDNS>" (enter).

b. "save" (enter).

c. "reboot" (enter).

B. SETTING ROUTER LAN IP - Note, these commands default to the first physical port on the router, which is known as "eth 0".

1. To see current IP address and subnet address.

a. Type "eth list" (enter).

2. To set IP address and subnet address.

a. Type "eth ip addr <ip> <subnet>" (enter).

3. Check IP address and subnet address.

a. Type "eth list" (enter).

C. TECH INSTALL by maintenance tech. TOP

a. The tech will install the router by itself and make sure it gets the 1st 3 lights solid green. Then he will use his laptop to browse through the router to the internet, if he is successful, he is done. He has shown that the router works and can be browsed through. It is the customer's responsibility to configure their own network.

D. PORTMAPPING - We do not support, just for your knowledge.
Allows packets that meet a specific port and protocol profile to be forwarded to a private LAN IP address that you specify. The packets must come to the router's WAN IP address.

1. Type "system addserver <LAN IP address of server> <protocol> <port>"
Examples:

a. Type "system addserver x.x.x.x tcp 110"

b. Type "system addserver x.x.x.x tcp http"

c. Type " system addserver x.x.x.x tcp ftp"

2. The protocol field may contain TCP, UDP, or any protocol number.
The port field may contain FTP, telnet, SMTP, HTTP, SNMP or any port number.

3. An example of this would be if a customer wants to allow himself to telnet to one of his LAN computers, but not allow any other ports open. The command would be: "system addserver<LAN computer IP> tcp telnet".

PCanywhere uses protocols TCP and UDP with ports 5631 and 5632. The following commands allow a user on the internet to connect with a workstation on the LAN. The server commands are required to have a unique port and protocol profile for every entry. This restricts PCanywhere users to the limit of one workstation on the LAN that can be accessed from the internet.

system addserver <LAN workstaion IP address> tcp 5631

system addserver <LAN workstation IP address> tcp 5632

Type "save" (enter).

Type "reboot" (enter).

E. ROUTER in BRIDGE MODE - click here

F. WHAT COMES WITH ROUTER

1. 1 Cross over cable (gray with yellow stripes on the ends.

2. 1 Straight thru cable (gray with red stripes on the ends.

3. 1 Serial to RJ45 adapter (used for hyperterminal console access).

4. 1 CD with Configuration Manager software and assorted Docs.

5. 1 3 prong power cord.

6. 1 DSL wall jack cord (usually marked with purple stripes and is thin and flat like a phone cord, not like CAT 5).

TOP

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