Dell Force10 S4810P Configuration Manual page 593

Use either or both of the commands in ROUTER ISIS mode to configure a simple text password.
Command Syntax
area-password [hmac-md5]
password
[
domain-password
encryption-type
]
hmac-md5
password
Use the
show config
Privilege mode to view the passwords.
Remove a password by using either the
ISIS mode.
Set the overload bit
Another use for the overload bit is to prevent other routers from using this router as an intermediate hop in
their shortest path first (SPF) calculations. For example, if the IS-IS routing database is out of memory and
cannot accept new LSPs, FTOS sets the overload bit and IS-IS traffic continues to transit the system.
Use this command the following command in ROUTER ISIS mode to set the overload bit manually.
Command Syntax
set-overload-bit
Enter
no set-overload-bit
When the bit is set, a 1 is placed in the OL column in the show isis database command output. In
Figure 27-9, the overload bit is set in both the Level-1 and Level-2 database because the IS type for the
router is Level-1-2
Command Mode
ROUTER ISIS
| ROUTER ISIS
command in ROUTER ISIS mode or the
no area-password
Command Mode
ROUTER ISIS
to remove the overload bit.
Purpose
Configure authentication password for an area. FTOS
supports HMAC-MD5 authentication.
This password is inserted in Level 1 LSPs, Complete
SNPs, and Partial SNPs.
Set the authentication password for a routing domain.
FTOS supports both DES and HMAC-MD5
authentication methods. This password is inserted in
Level 2 LSPs, Complete SNPs, and Partial SNPs.
show running-config isis
or
no domain-password
Purpose
Set the overload bit in LSPs. This prevents other routers from
using it as an intermediate hop in their shortest path first (SPF)
calculations.
Intermediate System to Intermediate System | 593
command in EXEC
command in ROUTER