Redistributing Ipv4 Is-Is Routes Within Ipv4 Is-Is; Configuring Isis Properties On An Interface; Disabling And Enabling Is-Is On An Interface; Disabling Or Re-Enabling Formation Of Adjacencies - Dell PowerConnect B-RX Configuration Manual

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Configuring ISIS properties on an interface

Redistributing IPv4 IS-IS routes within IPv4 IS-IS

In addition to redistributing routes from other route sources into IPv4 IS-IS, the BigIron RX can
redistribute Level 1 IPv4 IS-IS routes into Level 2 IPv4 IS-IS routes, and Level 2 IPv4 IS-IS routes into
Level 1 IPv4 IS-IS routes. By default, the device redistributes routes from Level 1 into Level 2.
NOTE
The BigIron RX automatically redistributes Level 1 routes into Level 2 routes, even if you do not
enable redistribution.
For example, to redistribute all IPv4 IS-IS routes from Level 2 into Level 1, enter the following
command at the IPv4 IS-IS unicast address family configuration level.
BigIron RX(config-isis-router-ipv4u)# redistribute isis level-2 into level-1
The router automatically redistributes Level-1 routes into Level 2.
Syntax: [no] redistribute isis level-1 into level-2 | level-2 into level-1 [prefix-list <name>]
The level-1 into level-2 | level-2 into level-1 parameter specifies the direction of the redistribution:
•
•
The prefix-list <name> specifies an IP prefix list. To configure an IP prefix list, refer to the Enterprise
Configuration and Management Guide.
Configuring ISIS properties on an interface
This section describe the IS-IS parameters for an interface.

Disabling and enabling IS-IS on an interface

In addition to enabling IS-IS globally, you also must enable the protocol on the individual interfaces
connected to ISs or ESs. To enable IS-IS locally on specific interfaces, enter commands such as the
following.
BigIron RX(config)# interface ethernet 1/1
BigIron RX(config-if-1/1)# ip router isis
BigIron RX(config-if-1/1)# exit
BigIron RX(config)# interface ethernet 1/2
BigIron RX(config-if-1/2)# ip router isis
These commands enable IS-IS on ports 1/1 and 1/2. The NET configured above (at the IS-IS
configuration level) applies to both interfaces.
Syntax: [no] ip router isis

Disabling or re-enabling formation of adjacencies

When you enable IS-IS on any type of interface except a loopback interface, the interface also is
enabled to send advertisements and form an adjacency with an IS at the other end of the link by
default. Adjacency formation and advertisements are disabled by default on loopback interfaces.
You can enable or disable adjacency formation and advertisements on an interface.
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level-1 into level-2 – Redistributes Level 1 routes into Level 2. This is the default.
level-2 into level-1 – Redistributes Level 2 routes into Level 1.
BigIron RX Series Configuration Guide
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