19
OL-4923-01 B0
Connecting to the Auxiliary Port
The auxiliary port on the RSP2 is a DB-25 plug DTE port for connecting a modem or other DCE device
(such as a channel service unit [CSU], data service unit [DSU], or other router) to the router. The port is
located above the console port on the RSP2 and is labeled AUX. An example of a modem connection is
shown in
Figure 5
.
Using the Y-Cables for Console and Auxiliary Connections
For systems with two RSP2s installed and the HSA or HA feature enabled, you can connect to either the
console or auxiliary ports simultaneously on both RSPs using a special, optional Y-cable. If only one
RSP2 is installed, it is the system active by default.
Note
The Y-cables are not required; two individual console cables and two individual auxiliary cables can be
used instead.
Figure 6
shows the console Y-cable and
Figure 7
shows the auxiliary Y-cable.
Figure 6
Console Y-Cable (Part Number CAB-RSP2CON=)
Figure 7
Auxiliary Y-Cable (Part Number CAB-RSP2AUX=)
H3181
CONSOLE
CONSOLE
DB-25 male
DB-25 male
DB-25 female
To console terminal
Console connectors
to console ports on two
RSP2s in RSP slots 2 and 3
H3182
AUXILIARY
AUXILIARY
DB-25 female
DB-25 female
DB-25 male
To external
auxiliary equipment
Auxiliary connectors
to auxiliary ports on two
RSP2s in RSP slots 2 and 3
