If the router contains only one SRP module, we recommend you divert traffic to another router before installing a new software release because the router is unavailable during the installation process. Depending on whether a firewall separates the router from the network host, you can then complete the appropriate software installation. (See Installing Software When a Firewall Exists or Installing Software When a Firewall Does Not Exist.) However, if the router contains two SRP modules, you can upgrade the software while the system is operating. (See Upgrading Systems That Are Operating with Two SRP Modules.)
When installing new JUNOSe software, you must copy the contents of the release files to a network host and transfer the release files to at least one router in the network. Depending on the network configuration, you can copy the release files from either the network host or the first router to the other routers in the network. (See Copying Release Files from One Router to Another.)
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Note: Some line modules and SRP modules on ERX-14xx models, ERX-7xx models, and the ERX-310 router require a minimum amount of memory to be used with JUNOSe Release 5.3.0 or a higher-numbered release. See the ERX Module Guide for module specifications. |
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