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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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This section describes the applicable scenario of Keychain.

Keychain provides authentication for applications. The following application protocols support Keychain authentication: Routing Information Protocol (RIP), Intermediate System to Intermediate System (IS-IS), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP),and Multicast Source Discovery Protocol (MSDP). Applications use the same Keychain authentication procedures. Create a Keychain and then use the Keychain to perform an authentication.

IS-IS Using Keychain for Authentication

IS-IS is a commonly used routing protocol, and IS-IS security is needed. You can configure a fixed authentication algorithm and key to authenticate IS-IS packets. But fixed authentication algorithms and keys may be decrypted. The use of Keychain to authenticate the IS-IS packets makes IS-IS more secure.

As shown in Figure 12-71, SwitchA, SwitchB, SwitchC, SwitchD and SwitchE use IS-IS to communicate. SwitchA, SwitchB, and SwitchC belong to area 10; SwitchD and SwitchE belong to area 20. SwitchA and SwitchB are Level-1 devices; SwitchD and SwitchE are Level-2 devices; SwitchC is a Level-1-2 device. Create a Keychain on each device to authenticate the IS-IS packets. Configure area and domain authentication in the IS-IS process, and configure interface authentication on the interface as well.

Figure 12-71 IS-IS using Keychain for authentication
Updated: 2019-08-09

Document ID: EDOC1000041694

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