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6
Configure the ISDN Link Parameters according to the information in the following table.
Table 189 ISDN link parameters
Attribute
Description
Dial Retries
Enter the number of times the systems attempts to connect before considering the connection
non operational.
The default value is 3.
Dial Interval
Enter the interval, in seconds, between connection attempts.
The default value is 60.
IP Header
Enable or disable IP header compression. The feature must be enable at both ends of the
Compression
connection.
The default value is Enabled.
Software
Enable or disable software compression. When enabled, all dial-up connections use Microsoft
Compression
Point-to-Point Compression (MPPC).
The default value is Disabled.
PPP LCP
Enable or disable the following PPP Link Control extensions: Time-Remaining and Identification.
Extensions
The default value is Enabled.
Disconnect Time
Enter the interval, in seconds, during which the ISDN interface disconnects when there is no
traffic.
If you select PersistentConnection, the ISDN interface will not disconnect.
Note: If you have more than one Trap Community Entry configured with this dial up interface,
using a very small number for the Disconnect Time will put you at risk of a racing condition. To
reduce the racing condition, enter a larger value for the Disconnect Time.
DNS Address 1
Enter the IP address of the Primary DNS server that this interface will use.
Select NoNameServerAddressesUsed if you do not want this interface to use a DNS server.
Note: If you select NoNameServerAddressesUsed, this setting is automatically set in DNS
Address 2 box.
DNS Address 2
Enter the IP address of the Secondary DNS server that this interface will use.
Select NoNameServerAddressesUsed if you do not want this interface to use a DNS server.
Protocol
Select the protocol that this ISDN interface uses. You can choose TCP/IP.
7
Press the TAB key to save the settings.
8
Click the ISDN Access Parameters tab.
The ISDN Access Parameters screen appears.
9
Configure the ISDN Access Parameters according to the information in the following table.
Table 190 ISDN access parameters
Attribute
Description
Authentication
Select the authentication type for the link. The options are AllowClearText or EncryptedOnly.
AllowClearText: When selected, the CHAP is used first and if the receiving end of the link
declines, PAP is used to authenticate the link.
EncryptedOnly: When selected, only encrypted authentication such as CHAP is used on this
interface during PPP authentication process.
Two Way
Enable or disable link authentication in both directions.
Authentication
The default value is Disabled.
ISDN dial up
Programming Operations Guide
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