router in the network. Depending on the network configuration, you can copy the release files from either the network host or the first E-series router to the other E-series routers in the network (see Copying Release Files from One E-Series Router to Another).
Identifying the Software Release File
The JUNOSe software CD contains two software releases: one for the ERX-1440 model and one for all other E-series routers. Both releases are in the software directory, which is identified by the release number. For example, if the release number is x.y.z, the name of the directory is x-y-z. To identify the software release file:
1Access the software directory.
2Find the files with the extension .rel.
•The software release file for the ERX-1440 router has the format erx40_x-y-z.rel, where x-y-z is the release number.
•The software release file for all other E-series routers has the format erx_x-y-z.rel, where x-y-z is the release number.
The procedures outlined in the following sections provide detailed instructions for typical installations. For additional information about commands and troubleshooting, see the E-Series System Basics Configuration Guide, the E-Series Command Reference Guide A to M, and the E-Series Command Reference Guide N to Z.
Installing Software When a Firewall Exists
When a firewall separates the E-series router from the network host, you must use FTP to transfer the software release files from the network host to the E-series router. In this case, you must configure the FTP server on the E-series router and ensure that FTP client software is installed on the network host.
For this network configuration, you must install the software from the normal operational mode of the command line interface (CLI). You can access the CLI through either the local console or a Telnet session. If you have not yet configured the E-series router to support Telnet, then you must use the local console. See Chapter 8, Accessing E-Series Routers, for information on using a local console or a Telnet session.
