3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 5 Integrated IS-IS Configuration3Com Corporation5-17Perform the following configuration in IS-IS view.Table 5-21 Configure to ignore the LSP checksum errorsOperation CommandConfigure to ignore the LSP checksum errors ignore-lsp-checksum-errorConfigure not to ignore the LSP checksumerrorsundoignore-lsp-checksum-errorBy default, the LSP checksum errors will not be ignored.5.2.18 Configuring to Log the Peer ChangesAfter peer changes log is enabled, the IS-IS peer changes will be output on theconfiguration terminal until the log is disabled.Perform the following configuration in IS-IS view.Table 5-22 Configure to Log the Peer ChangesOperation CommandEnable peer changes log log-peer-changeDisable peer changes log undo log-peer-changeBy default, the peer changes log is disabled.5.2.19 Configuring LSP Refresh IntervalIn order to ensure that the LSPs in the whole area can maintain the synchronization, allthe current LSPs will be transmitted periodically.You can customize the LSP refresh interval, with longer period for more stable networksand shorter period for less stable network.Perform the following configuration in IS-IS view.Table 5-23 Configure LSP refresh intervalOperation CommandConfigure LSP refresh interval timer lsp-refresh secondsRestore the default LSP refresh interval undo timer lsp-refreshBy default, LSP is refreshed every 900 seconds (15 minutes).
