Console Considerations
5
Hardware Installation Guide
3-5
Hardware User’s Guide
If you have cables exceeding recommended distances, or if you have cables that
pass between buildings, give special consideration to the effect of lightning strikes
or ground loops. The electromagnetic pulse caused by lightning or other high-
energy phenomena can easily couple enough energy into unshielded conductors to
destroy electronic devices. If your site has experienced problems of this sort,
consult experts in lightning suppression and shielding.
Most data centers cannot resolve the infrequent, but potentially catastrophic
problems just described without pulse meters and other special equipment. Take
precautions to avoid these problems by providing a properly grounded and
shielded environment, with special attention to issues of electrical surge
suppression.
To predict and remedy strong electromagnetic interference, consult experts in
radio-frequency interference (RFI).
3.5
Console Considerations
Before connecting the console port, read the following sections.
3.5.1 Console Port Connections
Each router system includes an RJ-45 console asynchronous serial port wired as a
data communications equipment (DCE) device. This port connects to a terminal
using an RJ-45-to-DB-25 adapter. Table A-1 in Appendix A lists the pinout for this
console port. The default parameters for the console port follow: 9600 baud, 8 data
bits, no parity generated or checked, and two stop bits. The console port does not
support hardware flow control.
3.6
Network Connection Considerations
Read this section to prepare for your network connections.
3.6.1 Ethernet Connections
The Ethernet port is an RJ-45 connector (Figure 4-3) located on the rear left of the
BRIM module. Use the supplied cable to connect the Ethernet port on the
CRBRIM-W/E to the R-J45 port on the EPIM-3PS. These ports, although
physically similar to a 10Base-T connection, are not 10BASE-T compliant.