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Table of Contents
- play_arrow Overview
- play_arrow Introduction to IS-IS
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- play_arrow Configuring IS-IS
- play_arrow Configuring a Basic IS-IS Network
- Understanding IS-IS Configuration
- Example: Configuring IS-IS
- Understanding IS-IS Areas to Divide an Autonomous System into Smaller Groups
- Example: Configuring a Multi-Level IS-IS Topology to Control Interarea Flooding
- Understanding IS-IS Designated Routers
- Configuring Designated Router Election Priority for IS-IS
- Configuring an ISO System Identifier for the Router
- Understanding Default Routes
- How to Configure Multiple Independent IGP Instances of IS-IS
- play_arrow Configuring IS-IS Authentication and Checksums
- Configuring IS-IS Authentication
- Configuring IS-IS Authentication Without Network-Wide Deployment
- Understanding Hitless Authentication Key Rollover for IS-IS
- Example: Configuring Hitless Authentication Key Rollover for IS-IS
- Understanding Checksums on IS-IS Interfaces for Error Checking
- Example: Enabling Packet Checksums on IS-IS Interfaces for Error Checking
- play_arrow Configuring IS-IS Routing Policy and Route Redistribution
- Understanding Routing Policies
- Understanding Backup Selection Policy for IS-IS Protocol
- Example: Configuring Backup Selection Policy for IS-IS Protocol
- Configuring Backup Selection Policy for the IS-IS Protocol
- Example: Redistributing OSPF Routes into IS-IS
- Example: Configuring IS-IS Route Leaking from a Level 2 Area to a Level 1 Area
- Handling of the IS-IS Binding SID S Flag and RFC 7794 Prefix Attribute Flags
- Understanding BGP Communities, Extended Communities, and Large Communities as Routing Policy Match Conditions
- Example: Configuring a Routing Policy to Redistribute BGP Routes with a Specific Community Tag into IS-IS
- IS-IS Extensions to Support Route Tagging
- Example: Configuring a Routing Policy to Prioritize IS-IS Routes
- Configuring Overloading of Stub Networks
- play_arrow Configuring IS-IS Bidirectional Forwarding Detection
- play_arrow Configuring IS-IS Flood Groups
- play_arrow Configuring IS-IS Multitopology Routing and IPv6 Support
- IS-IS Multicast Topologies Overview
- Example: Configuring IS-IS Multicast Topology
- Understanding Dual Stacking of IPv4 and IPv6 Unicast Addresses
- Example: Configuring IS-IS Dual Stacking of IPv4 and IPv6 Unicast Addresses
- Understanding IS-IS IPv4 and IPv6 Unicast Topologies
- Example: Configuring IS-IS IPv4 and IPv6 Unicast Topologies
- play_arrow Configuring IS-IS Link and Node Link Protection
- Understanding Loop-Free Alternate Routes for IS-IS
- Example: Configuring Node-Link Protection for IS-IS Routes in a Layer 3 VPN
- Understanding Remote LFA over LDP Tunnels in IS-IS Networks
- Configuring Remote LFA Backup over LDP Tunnels in an IS-IS Network
- Example: Configuring Remote LFA over LDP Tunnels in IS-IS Networks
- Understanding Weighted ECMP Traffic Distribution on One-Hop IS-IS Neighbors
- Example: Weighted ECMP Traffic Distribution on One-Hop IS-IS Neighbors
- play_arrow Configuring IS-IS Traffic Engineering
- IS-IS Extensions to Support Traffic Engineering
- Using Labeled-Switched Paths to Augment SPF to Compute IGP Shortcuts
- Example: Enabling IS-IS Traffic Engineering Support
- Understanding Forwarding Adjacencies
- Example: Advertising Label-Switched Paths into IS-IS
- Understanding Wide IS-IS Metrics for Traffic Engineering
- Example: Enabling Wide IS-IS Metrics for Traffic Engineering
- Understanding LDP-IGP Synchronization
- Example: Configuring Synchronization Between IS-IS and LDP
- Layer 2 Mapping for IS-IS
- Example: Configuring Layer 2 Mapping for IS-IS
- Understanding Source Packet Routing in Networking (SPRING)
- Understanding Adjacency Segments, Anycast Segments, and Configurable SRGB in SPRING
- Example: Configuring SRGB in Segment Routing for IS-IS
- Example: Configuring Anycast and Prefix Segments in SPRING for IS-IS to Increase Network Speed
- Configuring Segment Routing Global Blocks Label Ranges in SPRING for IS-IS Protocol
- Configuring Anycast and Prefix segments in SPRING for IS-IS Protocol
- Flexible Algorithms in IS-IS for Segment Routing Traffic Engineering
- Configuring Flexible Algorithm for Segment Routing Traffic Engineering
- Understanding Topology-Independent Loop-Free Alternate with Segment Routing for IS-IS
- Configuring Topology-Independent Loop-Free Alternate with Segment Routing for IS-IS
- Example: Configuring Topology Independent Loop-Free Alternate with Segment Routing for IS-IS
- Static Adjacency Segment Identifier for ISIS
- Understanding Segment Routing over RSVP Forwarding Adjacency in IS-IS
- Understanding IS-IS Microloop Avoidance
- How to Enable SRv6 Network Programming in IS-IS Networks
- Example: Configuring SRv6 Network Programming in IS-IS Networks
- How to Enable Link Delay Measurement and Advertising in IS-IS
- How to Enable Strict SPF SIDs and IGP Shortcut
- play_arrow Configuring IS-IS Scaling and Throttling
- Understanding Link-State PDU Throttling for IS-IS Interfaces
- Example: Configuring the Transmission Frequency for Link-State PDUs on IS-IS Interfaces
- Understanding the Transmission Frequency for CSNPs on IS-IS Interfaces
- Example: Configuring the Transmission Frequency for CSNP Packets on IS-IS Interfaces
- Understanding IS-IS Mesh Groups
- Example: Configuring Mesh Groups of IS-IS Interfaces
- play_arrow Configuring IS-IS CLNS
- play_arrow Configuring IS-IS on Logical Systems
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- play_arrow Configuration Statements and Operational Commands
list Table of Contents
Analyzing IS-IS Link-State PDUs in Detail
date_range
17-Feb-21
To analyze IS-IS link-state PDUs in detail, follow these steps:
Configure IS-IS open messages.
content_copy zoom_out_map[edit protocols isis traceoptions] user@host# set flag lsp detail
Verify the configuration.
content_copy zoom_out_mapuser@host# show
For example:
content_copy zoom_out_map[edit protocols isis traceoptions] user@host# show file isislog size 5m world-readable; flag error; flag lsp detail;
Commit the configuration.
content_copy zoom_out_mapuser@host# commit
View the contents of the file containing the detailed messages.
content_copy zoom_out_mapuser@host# run show log filenameFor example:
content_copy zoom_out_mapuser@host# run show log isislog Nov 28 20:17:24 Received L2 LSP abc-core-01.00-00, interface so-1/1/0.0 Nov 28 20:17:24 from abc-core-01 Nov 28 20:17:24 sequence 0x1c4f9, checksum 0x9fea, lifetime 1199 Nov 28 20:17:24 max area 0, length 426 Nov 28 20:17:24 no partition repair, no database overload Nov 28 20:17:24 IS type 3, metric type 0 Nov 28 20:17:24 area address 99.0908 (1) Nov 28 20:17:24 speaks CLNP Nov 28 20:17:24 speaks IP Nov 28 20:17:24 dyn hostname abc-core-01 Nov 28 20:17:24 IP address 10.10.134.11 Nov 28 20:17:24 IP prefix: 10.10.10.0/30 metric 1 up Nov 28 20:17:24 IP prefix: 10.10.10.4/30 metric 5 up Nov 28 20:17:24 IP prefix: 10.10.10.56/30 metric 5 up Nov 28 20:17:24 IP prefix: 10.10.10.52/30 metric 1 up Nov 28 20:17:24 IP prefix: 10.10.10.64/30 metric 5 up Nov 28 20:17:24 IP prefix: 10.10.10.20/30 metric 5 up Nov 28 20:17:24 IP prefix: 10.10.10.28/30 metric 5 up Nov 28 20:17:24 IP prefix: 10.10.10.44/30 metric 5 up Nov 28 20:17:24 IP prefix 10.10.10.0 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 1 Nov 28 20:17:24 IP prefix 10.10.10.4 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IP prefix 10.10.10.56 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IP prefix 10.10.10.52 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 1 Nov 28 20:17:24 IP prefix 10.10.10.64 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IP prefix 10.10.10.20 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IP prefix 10.10.10.28 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IP prefix 10.10.10.44 255.255.255.252 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IS neighbors: Nov 28 20:17:24 IS neighbor abc-core-02.00 Nov 28 20:17:24 internal, metrics: default 1 [...Output truncated...] Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IS neighbor abc-brdr-01.00 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IS neighbor abc-core-02.00, metric: 1 Nov 28 20:17:24 IS neighbor abc-esr-02.00, metric: 5 Nov 28 20:17:24 IS neighbor abc-edge-03.00, metric: 5 Nov 28 20:17:24 IS neighbor abc-edge-01.00, metric: 5 Nov 28 20:17:24 IS neighbor abc-edge-02.00, metric: 5 Nov 28 20:17:24 IS neighbor abc-brdr-01.00, metric: 5 Nov 28 20:17:24 IP prefix: 10.10.134.11/32 metric 0 up Nov 28 20:17:24 IP prefix: 10.11.0.0/16 metric 5 up Nov 28 20:17:24 IP prefix: 10.211.0.0/16 metric 0 up Nov 28 20:17:24 IP prefix 10.10.134.11 255.255.255.255 Nov 28 20:17:24 internal, metrics: default 0 Nov 28 20:17:24 IP prefix 10.11.0.0 255.255.0.0 Nov 28 20:17:24 internal, metrics: default 5 Nov 28 20:17:24 IP prefix 10.211.0.0 255.255.0.0 Nov 28 20:17:24 internal, metrics: default 0 Nov 28 20:17:24 Updating LSP Nov 28 20:17:24 Updating L2 LSP abc-core-01.00-00 in TED Nov 28 20:17:24 Analyzing subtlv's for abc-core-02.00 Nov 28 20:17:24 Analysis complete Nov 28 20:17:24 Analyzing subtlv's for abc-esr-02.00 Nov 28 20:17:24 Analysis complete Nov 28 20:17:24 Analyzing subtlv's for abc-edge-03.00 Nov 28 20:17:24 Analysis complete Nov 28 20:17:24 Analyzing subtlv's for abc-edge-01.00 Nov 28 20:17:24 Analysis complete Nov 28 20:17:24 Analyzing subtlv's for abc-edge-02.00 Nov 28 20:17:24 Analysis complete Nov 28 20:17:24 Analyzing subtlv's for abc-brdr-01.00 Nov 28 20:17:24 Analysis complete Nov 28 20:17:24 Scheduling L2 LSP abc-core-01.00-00 sequence 0x1c4f9 on interface so-1/1/1.0
