Dell Force10 S4820T FTOS Command Reference Guide - Page 930

www.dell.com | support.dell.com Usage Information The link MTU and the LSP MTU size must be the same. Since each device can generate a maximum of 255 LSPs, consider carefully whether the lsp-mtu command should be configured. lsp-refresh-interval e Set the link state PDU (LSP) refresh interval. LSPs must be refreshed before they expire. When the LSPs are not refreshed after a refresh interval, they are kept in a database until their max-lsp-lifetime reaches zero and then LSPs will be purged. Syntax lsp-refresh-interval seconds To restore the default refresh interval, enter no lsp-refresh-interval. Parameters seconds The LSP refresh interval, in seconds. This value has to be less than the seconds value specified with the max-lsp-lifetime command. Range: 1 to 65535 seconds. Default: 900 Defaults 900 seconds Command Modes ROUTER ISIS Command History Version 8.3.19.0 Version 8.3.12.0 Version 7.5.1.0 Introduced on S4820T Introduced on S4810 Expanded to support LSP Throttling Enhancement Usage The refresh interval determines the rate at which route topology information is transmitted preventing Information the information from becoming obsolete. The refresh interval must be less than the LSP lifetime specified with the max-lsp-lifetime command. A low value reduces the amount of time that undetected link state database corruption can persist at the cost of increased link utilization. A higher value reduces the link utilization caused by the flooding of refreshed packets. Related Commands max-lsp-lifetime Sets the maximum interval that LSPs persist without being refreshed max-area-addresses e Configure manual area addresses. Syntax max-area-addresses number To return to the default values, enter no max-area-addresses. 930 | Intermediate System to Intermediate System (IS-IS)