Cisco Switching/Routing :: 6500 - Power-Redundancy Mode Combined And Power Fail
Feb 28, 2011
I have a 6500 chassis with 2 power supplies. At the moment I am using the default configuration:
power-redudancy mode redundant
The problem is that an inserted module is in "power deny" state due too insufficient power.
I know, that It's not a good idea to change into combined mode (loss of redundancy), but my customers requested this anyway.
So I will change to combined mode. So here's the 1 million dollar question: "Which modules will go into power deny, if one of my power supplies fails?"
The 6500 config guide states:
"Power supply is removed withredundancy disabled
• System log and syslog messages are generated.
• System power is decreased to the power capability of one supply.
• If there is not enough power for all previously powered-up modules, some modulesare powered down and marked as power-deny in the show power oper state field."
Well, do you know if there's any way to configure some kind of priority? E.g. I definetly don't want by 10Gig Module or WiSM module to be in power deny. Can i statically make sure, those module will be powered on for sure? Like: "power enable module slot_number" How is this calculated? Or is random?
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May 18, 2012
The following discussion is based on cisco cat 6500 switches with two power supplies: p1 and p2. . Both power supplies are running in combined mode .Each power supplies is rated with 500 watts max( I just picked 500 watts for simplicity)Combined mode In combined mode, each power supply provides approximately 83% of its capacity to the chassis. This allows for greater utilization of the power supplies and potentially increased PoE densities
1) Let say our specific 6500 switch's configuration requires 1000 watts. We have two power supplies p1 and p2 ,each with rated power of 500 watts. Both power supplies must operate in combined mode. Will power supplies be able to meet the total load power requirement of 1000 watts?
Here is my understanding :The maximum power delivered by each power supplies is 83 percent of its rated power, assuming power supplies are running in combined mode.
So Maximum power delivered by power supplies
= 83% of p1+ 83% of p2
= 83% of 500 + 83% of 500
= 415 +415
=830 watts
Thus the required load of 1000 watts can not be met by our power supplies in combined mode.
2 )Suppose our switch's switch configuration needs 500 watts. Again our power supplies each rated with 500 watts, are configured for combined mode. How much power is being delivered by each power supply? Is it 83 percent of the total load i.e 500 watts?
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Oct 2, 2012
We have two 6500s. One is running in power redundant mode and the other is running in combined mode.We need to change the one running in combined mode to redundant mode to ensure it can run ok on one supply if needed but I have a couple of questions.
1. Assuming that we are not oversubscribed on the power allocated, does changing the mode cause any disruption?
2. The switch running in combined mode seems to have allocated some power for an "Inline Local-Pwr-Pool" which is not allocated on the switch running in redundant mode (see attached). Does this allocation will be needed if we change the power mode?
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Apr 22, 2013
I recently copied a configuration from a router 2800 to a 2900. After a power outage no one can connect outside of the network through the new router. Before the outage all was fine. I put back the old router and all is fine which eliminates any cable or switch error. I have the router totally disconnect. I notice the configuration is in place. My question is there any diagnostics that I can run to see if there is any hardware failure. It seems to boot up fine.
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Jun 9, 2013
I am receiving the following error on 3750 stack switches. have already verified the power status and found ok.
IOS used: Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
211540: Jun 10 10:45:17.935 UTC: %PLATFORM_STACKPOWER-4-UNBALANCED_PS: Switch 4's power stack has unbalanced power supplies
211541: Jun 10 10:46:18.045 UTC: %PLATFORM_STACKPOWER-4-UNBALANCED_PS:
[Code]....
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Sep 4, 2012
After stacking two 3750X switches, with four equal power-supply's, with StackWise and PowerStack , still got the next message every few hours %PLATFORM_ENV-1-FRU_PS_ACCESS: FRU Power Supply is not responding (gn4m-rt1p08-04-2)( note that the message revers to the second switch in the stack ) although the stackwise and powerstack on the switches is oke and are working correctly. !
Config : Stack-power in power-sharing mode/strict With CLI on the switch : All the power supply's and stack-power details, prio look OK.
Only: LMS prime /inventory/cisco-view/configure/power supply status result : some power supply's are marked as disabled.with the command > power supply 2 slot a off/on I manage to get the status back to "normal", but after a few hours some power supply's are again marked as "disabled".
Looks like SNMP en IOS difference from opinion.
Hardware
WS-C3750X-24S-S
C3KX-PWR-350WAC
Software
15.0(2)SE
C3750E-UNIVERSALK9-M
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Apr 14, 2013
We have two switches of the same model (WS-C3560-48PS-S) that are not providing PoE. I'm trying to remotely determine what the cause of the issue is.
Here is some output.
Hostname#show power inlineAvailable:0.0(w) Used:0.0(w) Remaining:0.0(w)
Interface Admin Oper Power Device Class Max (Watts)--------- ------ ---------- ------- ------------------- ----- ----Fa0/1 auto off 0.0 n/a n/a 15.4Fa0/2 auto off 0.0 n/a n/a 15.4Fa0/3 auto off 0.0 n/a n/a 15.4Fa0/4 auto off 0.0 n/a n/a 15.4Fa0/5 auto off 0.0 n/a n/a 15.4Fa0/6 auto off 0.0 n/a n/a 15.4Fa0/7 auto off 0.0 n/a n/a 15.4Fa0/8 auto off 0.0 n/a n/a 15.4Fa0/9 auto off 0.0 n/a n/a 15.4Fa0/10 auto off 0.0 n/a n/a 15.4(code)
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May 31, 2012
we need to relocate our core switch 6500 with sup 720 to another bldg
what is the command to gracefully shut it down I mean power off
I was told one can just switch off the power
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May 14, 2012
I have 6500 core switch with 2500W power supply, and I want to install a second power supply with 3000W ? is this applicable ? if yes, is there a specific configuration that must be done ?
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Oct 2, 2012
I know that the 6500 with a Sup 720 reserves power for a redundant 720. If there is no plan to install that redundant Sup, is there a means of releasing that reserved power? I know that one approach would be to insert a card into that slot to cut the reserve down, but I need to reclaim all of that power.
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May 1, 2012
We are having troubles getting a 10Gig interface to come up with a carrier... it shows down down.We are using X2-10GB-LR on a 6500 and SM fiber, distance to carrier hand off is about 90 feet.
According to: [URL]
The receiver power on a X2-10GB-LRis
Max
0.5
Min
-14.4
Our carrier is sending at +5db. Currently the interface is down.
My question is; would the interface even come up if it is receiving a powerful signal?
Here is DOM output for our interface.
show interfaces transceiver detail
Optical High Alarm High Warn Low Warn Low Alarm
Transmit Power Threshold Threshold Threshold Threshold
Port (dBm) (dBm) (dBm) (dBm) (dBm)
[Code]....
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Apr 4, 2012
In a stand alone 3750x switch configuration, can the secondary power supply only act as a redundant power supply (active/standby), or can it become a "pool" of power similar to power sharing mode for StackPower (somewhat active/active)? I understand there is no stack involved here but I'm curious if this functionality is possible.
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Feb 12, 2012
Cisco IP phones attached to a Moduke in one of my Cat6500 access Switches suddenly went down. Upon closer inspection of the Switch Sys log, I observed the following Sys log error messages: [Module 9 is experiencing the following error: Inline Power Module - PS Voltage bad. ]A sh Mod output indicates the PoE daughter card and Main Module are "ok" - see attached output. It appears issue is related to the the actual Power Supply module and not the blade module and installed PoE Daughter card. I am inclined to open a TAC case for a PS replacement, but wanted to see if this can be resolved without a hardware replacement. At this time all 48 IP phones attached to this module are out of Service.
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May 9, 2013
can I plug power supply from 4500 to 6500? more specifically we have power supply PWR-C45-1300ACV. And we need to place some power supply to 6500, which has only one active module. So 1300 should be enough for it. But we dont know if they are physically compatible, if it is possible to plug. I didnt find this power supply to be officially?
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Dec 26, 2012
I am getting the below messages on my Cisco 6500 series switches every 1min. The IOS version is 12.2(33)SXI6 & with SUP32-GE-3B
%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD
%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD
%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD
These messages are I am recieving on few ports only not on all port having IP Phone connected. I tried changing the phone to some other model but that also did not resolved my problem. Also I tried powering on the phone using power adapter but the issue still persist.
Client are not facing any issues due to this error, but still I would like know what can be the issue which is generating these logs.
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Nov 28, 2012
We have a cisco catalyst 6509 with Supervisor Engine . After power outage, the switch always start in Rommon mode. Configuration register is 0X2102, we want to it always start in normal mode. What should i do?
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Oct 9, 2012
Four 6500 connected to each other to form a full mesh. Switches 4 and 7 is running eigrp. A question came up, why didnt it have eigrp on SW 2 & 3 ? Will it still be redundant if link between SW3 and SW4 is removed? If redundancy is working, SW3 should be able to find its way to SW4 via SW7 or SW2, yes?
The config looks:
SW4 eigrp
router eigrp 100
network 192.168.0.0
redistribute static
auto-summary
[Code]....
Recently, the eigrp was configured to SW 2 and SW 3 as well, it included the “redistribute static” statement. The route for SW2 and SW3 now has the VLANs, 51 or so. Sent ping from a PC to VLAN1 IP of SW3, then link between SW3 and SW4 was disconnected, network connectivity went down for about 20secs, and ping came right back. Thought it was a success. All of a sudden, outside connectivity was lost. Ping within the LAN was successful, but no internet connection.
The eigrp on SW2 and SW3 was removed, and the internet connection came back up. The initial concern was that although there is physical redundancy in place, the other routes may not be known. Hence, eigrp configuration has been attempted for SW2 and SW3. Perhaps the “redistribute static” should have never been configured on SW2 and SW3, SW7 does not have the “redistribute static” statement anyway.
Without eigrp running on SW2 and SW3, does it still have redundancy? For what it’s worth, SW4 and SW7 are both VTP servers. With the current configs, does it still have redundancy? Link redundancy was never tested; it always has been assumed that it works. Later today, with it’s current config, the link redundancy will be tested.
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Oct 31, 2012
Why rpr is the only available redundancy mode option available to me. I'm running a 4507R+E with twin SUP7-E's.
Abbreviated show ver Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.03.01.SG RELEASE SOFTWARE (fc2)Technical Support: [URL]/techsupportCopyright (c) 1986-2012 by Cisco Systems, Inc.Compiled Sun 26-Aug-12 13:45 by prod_rel_team
ROM: 15.0(1r)SG2gp08401 uptime is 6 weeks, 6 days, 4 hours, 59 minutesUptime for this control processor is 6 weeks, 3 days, 2 hours, 21 minutesSystem returned to ROM by RPR SwitchoverSystem image file is "bootflash:/cat4500e-universalk9.SPA.03.03.01.SG.151-1.SG1.bin"Jawa Revision 7, Snowtrooper Revision 0x0.0x1C
[code]....
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Nov 15, 2011
I'm not able to find power redundancy mode when i do show power on my Cisco 4510R+R with SUP7E.
[code]...
When i do show power on my Cisco 65000 the first line shows the power redundancy mode, I have all other show power related command but couldn't find redundancy mode
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Jul 21, 2011
I keep getting alerts from our WCS stating that our 1252s are drawing low power. Now I am aware that they require enhanced PoE (up to 20W) but as we only have standard PoE in that building we purchased the 1252 series power injectors to go with them.
However, even with the correct power injectors the WCS still reports the draws low power error.
Is this a bug? Running WCS 7.0.172 at the moment.
Forgot to say we are using the PWR-INJ4 and the injector status is enabled and you see the injector MAC address when you drill in to the AP status.
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Feb 27, 2012
On a 4500 switch having a single sup engine, another sup engine was installed to act as redundant one.the redundancy mode was changed to sso, thereafter the secondary sup was prompted to be reset.
After it came back up again, the redundancy status still shows as RPR in operation mode.
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Dec 5, 2012
how can I enable an automatic power-on after a power failure on an ASA 5512-X?
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Mar 3, 2013
how can I enable an automatic power-on after a power failure on an ASA 5512-X?
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Jul 10, 2012
I want to get a Cisco router for central point of 100 GRE tunnels and total 10G traffic coming from those tunnels. I used 6500 but its CPU became high in less than 2 G traffic. Can you identify me a suitable router for this purpose. I think the router must process the GRE in hardware.
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Feb 20, 2013
i have new project in hospital with the bellow product :
20 X WS-C2960-24TC-S
2 X WS-C3750X-48T-S
2 X WS-C2960S-24TS-S
i need to configure this switch in order to work first the 2 core switch for redundancy then each catalyst switch 2960 connected to the core with 2 uplink each uplink for each core switch that way i have rendundancy in the connection then i need one vlan ?i need to configure this switch to work perfectly with each other in best redundancy mode?
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Oct 31, 2012
I recently bought a bunch of cisco 3750-x switches. I configured them all and started deploying them. A day later, some of the switches started failing on me. When I connect the power cord to the AC main, the power supply module on the back shows "AC OK" LED Green but the "PS OK" LED shows Red. I started referring to the installation guide and it told me that "PS OK" LED turns RED when output has failed. Guessing this I checked with another power supply module that was working, but still I get the same LED indicators.The original power supply module works with other switches.IOS crash...?
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Sep 4, 2012
I got some specs here that I can't seem to match with any existing switch - unless the 350CG-8PC-S can be powered by PoE.Let me quickly put down the important specs.
8x Gigabit ports
2x 1G Copper or 1G SFP Uplinks (It'll be a 1x Copper and 1x SFP setup)
support for PoE passthrough ( so just capable of it, provided it's 2x Copper Uplinks )
Does that match the 350CG-8PC-S ?
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Jul 22, 2012
Have Cisco catalyst 2960 IOS ver12.2(53)se2 when power on the power LED does not come up and on this is what shown on hyper terminal. what need to be done for this switch ?
Boot Sector Filesystem (bs) installed, fsid: 2
Base ethernet MAC Address: b4:d9:8d:27:4c:00
Xmodem file system is available.
[code]......
Interrupt within 5 seconds to abort boot process. Boot process failed. The system is unable to boot automatically. The BOOT environment variable needs to be set to a boot able image.
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Mar 21, 2013
I am building a switch stack using 4 48 port 3750X switches that will also have the power stacked. If I install a single 715W power supply in each switch will the stack support 802.3af accross all 48 ports on each switch? My calculations are 48 ports x 15.4W which gives me almost 740W needed which is over hte 715W power supply. I was reading somewhere were it mentioned that in a powerstack additional power can be drawn from the stack. I know this will not work if you are trying to support power on all switches accross all ports but would it if say 2 of the 4 switches are needing to provide PoE accross all 48 ports? If I say we can only use 24 ports per switch for PoE that drops the power need down to 370W which I believe should work. Just trying to get a better understanding of PoE consumption. Would the best solution be to just add a second power supply to each switch?
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Sep 28, 2012
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Oct 1, 2012
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