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Chapter 5
Setup and Configuration
IMPORTANT!
Enabling or disabling the firewall will reset – but not disable – the BFA protection mechanism, if
previously enabled. Any hosts that were previously blocked will be allowed to log in again. If multiple
hosts are actively attacking at the time, this could result in reduced system performance.
1.
Make sure the CLI is in Configuration mode.
2.
Enable the firewall by typing:
security firewall enable
Or disable the firewall by using the no version of the command:
no security firewall enable
Type commit and press Enter to save the changes, or type revert and press Enter to abort.
3.
Section 5.18
Managing IS-IS
Intermediate System - Intermediate System (IS-IS) is one of a suite of routing protocols tasked with sharing
routing information between routers. The job of the router is to enable the efficient movement of data over
sometimes complex networks. Routing protocols are designed to share routing information across these networks
and use sophisticated algorithms to decide the shortest route for the information to travel from point A to point B.
One of the first link-state routing protocols was IS-IS developed in 1986 and later published in 1987 by ISO as
ISO/IEC 10589. It was later republished as an IETF standard
The following sections describe how to configure the IS-IS routing protocol:
•
Section 5.18.1, "IS-IS Concepts"
•
Section 5.18.2, "Configuring IS-IS"
•
Section 5.18.3, "Viewing the Status of Neighbors"
•
Section 5.18.4, "Viewing the Status of the Link-State Database"
•
Section 5.18.5, "Managing Area Tags"
•
Section 5.18.6, "Managing Interfaces"
•
Section 5.18.7, "Managing LSP Generation"
•
Section 5.18.8, "Managing SPF Calculations"
•
Section 5.18.9, "Managing the Lifetime of LSPs"
•
Section 5.18.10, "Managing LSP Refresh Intervals"
•
Section 5.18.11, "Managing Network Entity Titles (NETs)"
•
Section 5.18.12, "Managing Redistribution Metrics"
Section 5.18.1
IS-IS Concepts
IS-IS is an Interior Gateway Protocol (IGP) meant to exchange information within Autonomous Systems (AS). It
is designed to operate within an administrative domain or network using link-state information to decide optimal
data packet routing, similar to OSPF. IS-IS floods the network with link-state information and builds a database of
294
(RFC 1142
[http://tools.ietf.org/html/rfc1142]).
RUGGEDCOM ROX II
CLI User Guide
Managing IS-IS
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Troubleshooting
