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Usage guidelines
The password in the specified mode is inserted into all outbound Level-1 packets (LSP, CSNP, and PSNP)
and is used to authenticate inbound Level-1 packets.
Area authentication enables IS-IS to discard routes from untrusted routers.
Routers in an area must have the same authentication mode and password.
If neither ip nor osi is specified, OSI-related fields are checked.
For security purposes, all passwords, including passwords configured in plain text, are saved in cipher
text.
Examples
# Configure the area authentication mode as simple, and set the plaintext password to 123456.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] area-authentication-mode simple plain 123456
Related commands
• domain-authentication-mode
• isis authentication-mode
auto-cost enable
Use auto-cost enable to enable automatic link cost calculation.
Use undo auto-cost enable to disable the function.
Syntax
auto-cost enable
undo auto-cost enable
Default
This function is disabled.
Views
IS-IS view
Predefined user roles
network-admin
Usage guidelines
After automatic link cost calculation is enabled, the link cost is automatically calculated based on the
bandwidth reference value of an interface. When the cost-style is wide or wide-compatible, the cost
value of an interface is calculated by using the formula: Cost = (reference bandwidth value / link
bandwidth) × 10. For other cost styles, Table 50 a
pplies.
Table 50 Automatic cost calculation scheme
for cost styles other than wide and wide-compatible
Interface bandwidth Cost
≤10 Mbps 60
≤100 Mbps 50
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