DELL S50V User Manual
Intermediate System to Intermediate System | 529
Use the
show running-config isis
command in EXEC Privilege mode to view IS-IS configuration globally
(including both IPv4 and IPv6 settings), or the
show config
command in ROUTER ISIS mode to view the
current IPv4 IS-IS configuration, or the
show config
command in ROUTER ISIS-ADDRESS FAMILY
IPV6 mode to view the current IPv6 IS-IS configuration
Configure authentication passwords
You can assign an authentication password for routers in Level 1 and for routers in Level 2. Since Level 1
and Level 2 routers do not communicate with each other, you can assign different passwords for Level 1
routers and for Level 2 routers. If you want the routers in the level to communicate with each other, though,
they must be configured with the same password.
and Level 2 routers do not communicate with each other, you can assign different passwords for Level 1
routers and for Level 2 routers. If you want the routers in the level to communicate with each other, though,
they must be configured with the same password.
Use either or both of the commands in ROUTER ISIS mode to configure a simple text password.
Use the
show config
command in ROUTER ISIS mode or the
show running-config isis
command in
EXEC Privilege mode to view the passwords.
Remove a password by using either the
no area-password
or
no domain-password
command in
ROUTER 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.
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.
Enter
no set-overload-bit
to remove the overload bit.
Command Syntax
Command Mode
Purpose
area-password [hmac-md5]
password
ROUTER ISIS
Configure authentication password for an area. FTOS
supports HMAC-MD5 authentication.
This password is inserted in Level 1 LSPs, Complete
SNPs, and Partial SNPs.
supports HMAC-MD5 authentication.
This password is inserted in Level 1 LSPs, Complete
SNPs, and Partial SNPs.
domain-password
[encryption-type
| hmac-md5]
password
ROUTER ISIS
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.
FTOS supports both DES and HMAC-MD5
authentication methods. This password is inserted in
Level 2 LSPs, Complete SNPs, and Partial SNPs.
Command Syntax
Command Mode
Purpose
set-overload-bit
ROUTER ISIS
Set the overload bit in LSPs. This prevents other routers from
using it as an intermediate hop in their shortest path first (SPF)
calculations.
using it as an intermediate hop in their shortest path first (SPF)
calculations.