- play_arrow Overview
- play_arrow Introduction to IS-IS
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- play_arrow Monitoring and Troubleshooting Network Issues
- play_arrow Monitoring Networks
- play_arrow Troubleshooting Network Issues
- Working with Problems on Your Network
- Isolating a Broken Network Connection
- Identifying the Symptoms of a Broken Network Connection
- Isolating the Causes of a Network Problem
- Taking Appropriate Action for Resolving the Network Problem
- Evaluating the Solution to Check Whether the Network Problem Is Resolved
- play_arrow Troubleshooting IS-IS
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- play_arrow Configuration Statements and Operational Commands
Configuring an ISO System Identifier for the Router
For IS-IS to operate on the router, you can optionally configure a system identifier (system ID). The system identifier is commonly the media access control (MAC) address or the IP address expressed in binary-coded decimal (BCD).
If you do not statically map the hostname, the mapping is generated
dynamically, based on the system host-name. If you omit the static-host-mapping hostname sysid statement, the IS-IS system ID is
dynamically generated from the host portion of the ISO address configured
on the loopback interface (lo0) and is mapped to the host-name statement configured at the [edit system] hierarchy level.
Run the show isis hostname command to view the mappings.
To configure an International Organization for
Standardization (ISO) system ID, include the sysid statement
at the [edit system static-host-mapping hostname] hierarchy level:
[edit system] static-host-mapping { hostname { sysid system-identifier; } }
hostname is the
name specified by the host-name statement at the [edit
system] hierarchy level.
system-identifier is the ISO system identifier. It is the 6-byte system ID portion
of the IS-IS network service access point (NSAP). We recommend that
you use the host’s IP address represented in BCD format. For
example, the IP address 192.168.1.77 is 1921.6800.1077 in BCD.
