D-Link DGS-3630 Emulator 1 - Page 692
hostname dynamic
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DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide Example This example shows how to exit the address family configuration mode. Switch# configure terminal Switch(config)# router isis Switch(config-router)# address-family ipv6 Switch(config-router-af)# exit-address-family switch(config-router)# 51-8 hostname dynamic This command is used enable IS-IS dynamic hostname mapping. Use the no form of this command to disable dynamic hostname mapping. hostname dynamic no hostname dynamic Parameters None. Default By default, router names are dynamically mapped to system IDs. Command Mode Router Configuration Mode. Command Default Level Level: 12. Usage Guideline In the IS-IS routing domain, the system ID is used to represent each router. The system ID is part of the Network Entity Title (NET) that is configured for each IS-IS router. For example, a router with a configured NET of 49.0001.0023.0003.000a.00 has a system ID of 0023.0003.000a. Router-name-to-system-ID mapping is difficult for network administrators to remember during maintenance and troubleshooting on the routers. The dynamic hostname mechanism uses Link-State Protocol (LSP) flooding to distribute the router-name-tosystem-ID mapping information across the entire network. Every router on the network will try to install the system ID-to-router name mapping information in its routing table. If a router that has been advertising the dynamic name Type, Length, Value (TLV) on the network suddenly stops the advertisement, the mapping information last received will remain in the dynamic host mapping table for up to one hour, allowing the network administrator to display the entries in the mapping entry table during a time when the network experiences problems. Example This example shows how to enable hostname dynamic. Switch# configure terminal Switch(config)# router isis Switch(config-router)# hostname dynamic Switch(config-router)# 687
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