RPS 2300 not backing Router 2921

[sankarccie]

We have a 2300 RPS with single 1150WAC power supply (C3K-PWR-1150WAC) which is connected to one 2921 Router. But it is not backing the rotuer.

Router 2921 running IOS

c2900-universalk9-mz.SPA.152-2.T1.bin

I am getting the following logs:

*** External Redundant Power Supply is present, but type is unknown or not supported.***

%ENVMON-1-POWER_WARNING: : RPS Online Insertion and Removal is not supported.

Do we required any configuration to be done on Router end.

Note: The RPS is backing 2960 Switch.

Regds,

Sankar V

[thiland]

Hi Sankar,

A 2921 ISR G2 router requires both power supplies be populated in the RPS 2300.  Also, there is no hotswap support in the RPS.  For example, if you remove the RPS cable from the 2921 and plug it back in, you will need to reboot the router for it to recognize the RPS unit again.

http://www.cisco.com/en/US/docs/routers/access/2900/hardware/installation/guide/Internal_Modules.html#wp1182874

Table 5-3     RPS 2300 Backup Capabilities 

Power Mode	Quantity and Type of RPS 2300 FRU
	Quantity 1 C3K-PWR-750WAC	Quantity 2 C3K-PWR-750WAC	Quantity 1 C3K-PWR-1150WAC	Quantity 2 C3K-PWR-1150WAC
2911 in RPS	1	2	1	2
2921, 2951 in RPS	0	1	0	1
2911 in POE Boost	0	1	1	2
2921, 2951 in POE Boost	0	1	0	1

Table 5-3 shows RPS 2300 backup capabilities when coupled with Cisco 2900 series ISRs.

No configuration is necessary on the router.  You can use "show env rps" on any attached RPS device to check status.

[sankarccie]

Hi Thiland,

I had rebooted the Router once and now it showing as

External Redundant Power Supply is present and in standby mode.

TVSMISPN-01#sh environment rps

RPS Name: RPS 2300

  State: Standby

  PID: PWR-RPS2300

  Serial#:

  Fan: Good           

  Temperature: Green          

  RPS Power Supply A: Present

    PID             : C3K-PWR-1150WAC 

    Serial#         :

    System Power    : Good

    PoE Power       : Good

    Watts           : 300/850 (System/PoE)

  RPS Power Supply B: Not Present

DCOut  State   Connected  Priority  BackingUp  WillBackup  PortName

-----  ------- ---------  --------  ---------  ----------  ----------------

     1  Active  No                6  No         Yes         <>             

     2  Active  No                6  No         Yes         <>             

     3  Active  No                6  No         Yes         <>             

     4  Active  No                6  No         Yes         <>             

     5  Active  No                6  No         Yes         <>             

     6  Standby Yes               6  No         No         Router2921

[FERNANDO FERNANDEZ DURAN]

Hi everyone im on the middle of a messy thing i have 1 C2921-AX/K9 and 1 WS-C2960X-48TS-L connected to a RPS with two power supplies of 750watts but when i connect both and test the redundancy with the RPS unplugged the main power supply both the SW and de Router going off, the question is how many power supplies i need in what combination? 750 and 1100 or both of 1100 watts?