Users Guide

By default, Dell Networking OS supports dynamic host name exchange to assist with troubleshooting and conguration. By assigning
a name to an IS-IS NET address, you can track IS-IS information on that address easier. Dell Networking OS does not support ISO
CLNS routing; however, the ISO NET format is supported for addressing.
To support IPv6, the Dell Networking implementation of IS-IS performs the following tasks:
• Advertises IPv6 information in the PDUs.
• Processes IPv6 information received in the PDUs.
• Computes routes to IPv6 destinations.
• Downloads IPv6 routes to the RTM for installing in the FIB.
• Accepts external IPv6 information and advertises this information in the PDUs.
The following table lists the default IS-IS values.
Table 41. IS-IS Default Values
IS-IS Parameter Default Value
Complete sequence number PDU (CSNP) interval 10 seconds
IS-to-IS hello PDU interval 10 seconds
IS-IS interface metric 10
Metric style Narrow
Designated Router priority 64
Circuit Type Level 1 and Level 2
IS Type Level 1 and Level 2
Equal Cost Multi Paths 16
Conguration Information
To use IS-IS, congure and enable IS-IS in two or three modes: CONFIGURATION ROUTER ISIS, CONFIGURATION INTERFACE,
and ( when conguring for IPv6) ADDRESS-FAMILY mode. Commands in ROUTER ISIS mode congure IS-IS globally, while
commands executed in INTERFACE mode enable and congure IS-IS features on that interface only. Commands in the ADDRESS-
FAMILY mode are specic to IPv6.
NOTE: When using the IS-IS routing protocol to exchange IPv6 routing information and to determine destination
reachability, you can route IPv6 along with IPv4 while using a single intra-domain routing protocol. The conguration
commands allow you to enable and disable IPv6 routing and to congure or remove IPv6 prexes on links.
Except where identied, the commands described in this chapter apply to both IPv4 and IPv6 versions of IS-IS.
Conguration Tasks for IS-IS
The following describes the conguration tasks for IS-IS.
• Enabling IS-IS
• Conguring Multi-Topology IS-IS (MT IS-IS)
• Conguring IS-IS Graceful Restart
• Changing LSP Attributes
• Conguring the IS-IS Metric Style
• Conguring the IS-IS Cost
• Changing the IS-Type
• Controlling Routing Updates
• Conguring Authentication Passwords
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Intermediate System to Intermediate System