8
Connection Methods and Cables
Table 2 summarizes the redundancy options and cable requirements for the various external devices that can be supported by
the Cisco RPS.
The connection options are shown in the following figures:
•
Quasi-redundant—Figure 6. The AC input to the Cisco RPS is fully redundant, but the DC output to the external devices
is not.
Note
Quasi-redundant is the only recommended configuration for Cisco switches and hubs.
Table 1
RPS Interface Modules
Powered Device
RPS Interface Module
Cisco 2500 series, Cisco MC3810
ACS-2500RPS=
Cisco 2600 series
ACS-2600RPS=
Cisco 3620
ACS-3620RPS=
Cisco 3640
ACS-3640RPS=
Cisco 3725
ACS-3725RPS=
Cisco 4000 series
ACS-4000RPS=
Table 2
Redundancy Options and Cable Requirements
Redundancy Configuration DC-Powered Device
Cable Description
Cable Order
Number
Quasi-redundant
(Routers, hubs, and
switches)
Cisco 1516M hub (HP 10BASE-T Hub-16M)
FastHub 400 series hubs
Catalyst 1900 series, Catalyst 2820 series,
Catalyst 2900 series and Catalyst 3500 series XL
switches
Cisco 2600 series and Cisco 4000 series routers
Cisco 3620, Cisco 3640, and Cisco 3725 routers
One-to-one cable,
22-pin to 18-pin,
4 ft. (1.22 m)
1
1. The cables come in only one length. Custom cable-lengths are not available. Excessive voltage drop and marginal or failed operation can occur with
cables of different lengths. Use of cables other than the ones listed can cause damage to the Cisco RPS or external device.
CAB-RPS-2218=
Cisco 2500 series routers and access servers
Cisco MC3810 multiservice concentrators
One-to-one cable,
22-pin to 8-pin,
4 ft. (1.22 m)
1
CAB-RPS-2208=
Fully redundant
(Routers only)
Cisco 2600 series and Cisco 4000 series routers
Cisco 3620, Cisco 3640, and Cisco 3725 routers
Two-to-one cable,
22-pin to 18-pin,
4 ft. (1.22 m)
1
CAB-RPSY-2218=
Cisco 2500 series routers and access servers
Cisco MC3810 multiservice concentrators
Two-to-one cable,
22-pin to 8-pin,
4 ft. (1.22 m)
1
CAB-RPSY-2208=
Redundant with reboot
2
(Hubs and switches only)
2. This configuration is not recommended due to the 30-second reboot and downtime.
FastHub 400 series hubs
Catalyst 1900 series, Catalyst 2820 series,
Catalyst 2900 series and Catalyst 3500 series XL
switches
One-to-one cable,
22-pin to 18-pin,
4 ft. (1.22 m)
1
CAB-RPS-2218=