Telnet Pages

Router products support Telnet access for diagnostic purposes. Access to Telnet services are restricted in two ways :

• Via a login sequence (mandatory)
• Via the Use of a secure Access List (defined in the goodGuyTable in the MIB)

NOTE: Telnet is a read only application. All configuration is handled via SNMP which also may be secured via the Access List (Good Guys entries in the MIB).

Contents

• Recommended Telnet Applications and Settings
• Login sequence
• Logging Telnet to a Disk File
• Telnet Page 1 ARP Table
• Telnet Page 2 Routing Table and Memory Stats
• Telnet Page 3 Router and Interface Stats – WarpOne Models
• Telnet Page 3 Router and Interface Stats – WarpTwo Models
• Telnet Page 4 HotPool Status Information
• Telnet Page 5 IP, TCP, UDP, ICMP, MPPP, HotPools and ISDN Stats
• Telnet Page 6 ISDN Connections Status
• Telnet Page 7 Event and Trace Log
• Telnet Page 8 Processor Stats
• Telnet Page 9 D Channel Log
• Telnet Page A ISDN Traffic Log
• Telnet Page B System Policy Queue Status
• Telnet Page C Security Status
• Telnet Page D Connection Opening Log
• Telnet Page E Proxy/NAT Status
• Telnet Page F Multicast Status
• Telnet Page G DHCP Status
• Telnet Page H CALL Status and TEST

Telnet Application Settings

The following setting are recommended when using the standard Microsoft version of Telnet (all setting are set by selecting the ‘Terminal’ menu then ‘Preferences’

Select ‘local echo’ ON

Select ‘Buffer size’ = 30

Select VT100/ANSI ON

Using the buffer size defined above allows all pages to be displayed as a single screen (except for rolling log pages 7 & 9). and depending on screen resolution may require selection of a suitable font size.

LINUX standard Telnet and some other Telnet applications will not work with the router Telnet pages due to the handling of echo characters. This restriction is under investigation and will be removed as soon as practical.

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Telnet Login sequence

Router application version 69 onward requires a user to login to the Router before being able to invoke the diagnostics. The login sequence appears as follows

ZyTrax Router Diagnostics

Login:

enter the Router Name followed by [ENTER] key.

The Router Name is found in MIB under zytrax\router\system\sysName (default configuration name is always the model name e.g. WarpOne or WarpTwo) using a ZyTrax utility such as CoolFig or NT_Ser. (NOTE: login name is case sensitive).

If the login sequence is successful the following message appears

Select Initial Page:

Type a single page number (do not use ENTER required) e.g. “a” (without the inverted commnas) will display the Router Traffic screen.

If the Name is incorrect the message

Invalid Password

is displayed and you may try again to enter the Router Name. If after three attempts the correct password has not been entered then the message

Telnet session terminated

is displayed and the Telnet session is abandoned.

Each telnet page starts with a display of the format

Router Status Page X (PPPRRIIBBB)

Where

X is the page number selected

PPPRRIIBBB is the PRIB defining the Product, Release, Issue and Build number as follows:

• PPP is the product code
• RR is the Release number
• II is the issue number
• BBB is the build level

Logging Telnet to a Disk File

In many cases it is better to log the telnet session to a disk file for subsequence analysis. Most versions of Telnet support this feature. The following instructions apply to the standard Microsoft Windows release of Telnet.

1. Load Telnet (either using Start\programs\accessories or select start\run and type ‘Telnet’
2. From the ‘Terminal’ Menu select ‘Start logging’
3. Select a suitable directory and file name (NOTE: Telnet automatically uses a file suffix of ‘log’, it is easier if you change this to ‘txt’ when allocating a file name).