Cisco :: 3750 Stack Member Loss Power?
Jun 10, 2012
I have a switch stack with three WS-C3750X-48 switches running 12.2(55)SE. Recently, stack member 3 went offline for a few minutes, after being online for over a year. A show version on member 3 reports that the system returned to ROM by power-on.
Stack member 3 shares a UPS with a router that did not lose power and all three stack members have stack power with four 350 WATT power supplies between the three of them. There are no crashinfo files on any of the switches, log files show the stack ports on the other switches going offline then switch 3 being removed from the stack.
Surveillance recordings show there was no one near the switch during the time and AAA accounting shows no clues. Is it possible the switch crashed without leaving a trace in the logs, a crashinfo file and report that it returned to ROM by power-on?
I've read before that loose stack cables can cause stack member reboots. Would such an event generate log messages other than the stack ports changing states to down?
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Apr 16, 2013
We have a current 3-stack 3750 ( 48-P,48-TS & 3750v2-48PS ) running fine. There is a plan to introduce a fourth stack member ( 3750X-48P ) into this stack.as per cisco documentation, it suggests to use 3750X as master for a mixed stack. In this case, we will need to upgrade current other 3 stack switches to a latest version.,Can we do a no-downtime ios upgrade on the existing 3-switch stack?, when this upgrade is done, is there any way to have the new ios pushed down to all three stack members at the same time or do we need to each member upgrade seperately?, for adding the fourth member, is it acceptable if master is ruuning ver eg. 12.2(55) and all rest of the members run ver 12.2(53) ? will this create any issues and will stacking be successful.
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Jul 10, 2012
One of the stack member has failed and we need to replace the same with the new one.
[code],....
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Sep 27, 2012
I have 2 3750-x members in a stack running 12.2(58)SE2. I am able to console into the stack master, which happens to be the top switch, but not able to console into the 2nd member. I get the screen stating the console is available but never get the prompt to login. Is this expected behavior?On our stacks of 3750v2's, I'm able to console to any switch in the stack?
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Mar 3, 2011
I've got a 3750 stack with a 3750-48p being switch 1 and a 3750-12s being switch 2 and switch 2 is the master. I would like to change the stack member numbers. I would like the 3750-12s to be switch 1 and the 3750-48p to be switch 2. I undertand I will have to reboot the stack for the change to take affect but here are my questions: How would this change affect the stack running-config ? will the switchport config follow the change ?
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Feb 5, 2012
I've got a 3750 stack with a 3750-48p being switch 1 and a 3750-12s being switch 2 and switch 2 is the master. I would like to change the stack member numbers. I would like the 3750-12s to be switch 1 and the 3750-48p to be switch 2. I undertand I will have to reboot the stack for the change to take affect but here are my questions:
- How would this change affect the stack running-config ?
- will the switchport config follow the change ?
switch 1 provision ws-c3750-48p
switch 2 provision ws-c3750g-12s
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May 20, 2012
We have got 2 3750 switches in the stack which are connected to access switches with 2 uplink ports . each 1 uplink from each physical stack switch .
Due to some power issue our member switch got rebooted. After the reboot the access switches were not reachable through ping , but i was abe to see access switches in "show cdp neighbour" . Then i rebooted the master switch and member switch one after other . after which i was able to ping the access switches.
IOS Version : c3750-ipservices-mz.122-35.SE5.bin
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Apr 5, 2012
I have just upgraded 2 3750 switches in a stack via the master and reloaded the master switch remotely, how can I reload the 2nd (member) switch?
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Sep 24, 2012
1) current switch have below mentioned switch stack details
.
switch#sh switchSwitch/Stack Mac Address : fcfb.xyz.8b80H/W CurrentSwitch# Role Mac Address Priority Version State----------------------------------------------------------*1 Master fcfb.xyz.8b80 10 0 Ready3 Member 2893.xyz.3180 1 0 Ready
2) I am in process of changing switch member number from 3 to 2 , I executed the command on the global config mode " switch 3 renumber 2 "but I yet to reload the switch .
here I have I doubt . as currently the ports module are fas 1/0/1-48 and fas 3/0/1-48 under respective vlan . once I reload the switch is the switch port module number will get change to fastethernt 3/0/1-48 to fastethenet 2/0/1-48 ??? . if it happens the vlan configuation which configured on the fas 3/0/1-48 module also get configured automatically or I need to configure manually
3) as i said i have execuated the command : "switch 3 renumber 2 " , how to remove this or revert the change , as i checked in the running config this command not exist .
switch ( config) # switch 3 renumber 2WARNING: Changing the switch number may result in aconfiguration change for that switch.The interface configuration associated with the old switchnumber will remain as a provisioned configuration.Do you want to continue?[confirm]Changing Switch Number 3 to Switch Number 2New Switch Number will be effective after next reboot
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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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Apr 21, 2013
What will be the recommended connectivity of stack power cable in 6 number of 3750x switches ?
Is it similar to the stack cable ?
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Jan 16, 2012
I have 4 switches in a 3750-X stack.Here is the output from the stack why are the switches out of order and I'm not able to bring up switch 1 port 1.
switch 4 port 2 shows not connect it is I've checked the cables.
Power stack name: Powerstack-4
Stack mode: Power sharing
Switch 1:
Power budget: 695
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Shut
Port 2 status: Connected
Neighbor on port 1: 0000.0000.0000
Neighbor on port 2: c471.fe84.e100
Switch 2:
Power budget: 713
Low port priority value: 21
High port priority value: 12
Switch priority value: 3
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: c471.fe85.3000
Neighbor on port 2: c471.fe80.2800
Switch 4:
Power budget: 697
Low port priority value: 19
High port priority value: 10
Switch priority value: 1
Port 1 status: Connected
Port 2 status: Not connected
Neighbor on port 1: c471.fe80.2800
Neighbor on port 2: 0000.0000.0000
Switch 3:
Power budget: 710
Low port priority value: 20
High port priority value: 11
Switch priority value: 2
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: c471.fe84.e100
Neighbor on port 2: c471.fe7f.eb00s
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Mar 4, 2012
I have a 3 member CBS3120X-S stack in a HP C7000 enclosure (switches 1, 3, and 5). Switch 1, (the previous stack master) is not showing up in the stack and all the ports are down. Switch 3 has taken over as master, but I don't know what happened to switch 1. The system and stack lights are green and I am not seeing any messages in the log. I reset switch 1 and that did not resove the issue. I disconnected the stack cable and reset the switch again (pulled it out and pushed it back in) and connected to it with a console cable. I get nothing on the console, not even rommon mode. I was connected at the default baud rate that worked when I connected the conole of the other switches in the stack, so I don't think is a serial configuration issue. If this is CBS hardware problem, I don't understand why the system light is green.
Switches 1,3, 5 and provision configuration:
switch 1 provision ws-cbs3120g-s
switch 3 provision ws-cbs3120x-s
switch 5 provision ws-cbs3120g-s
[Code].....
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Feb 7, 2012
I have two 3750X in a stack. Each 3750X has one 10Gb uplink to primary core1 and one 1Gb uplink to backup core2 configured in 2 etherchannel groups. The member switch has bad ports, so I need to replace it. I have spare 3750X unit. Is it possible to connect the spare unit to the stack and then move the RJ-45 cables from the member with bad ports to the new member? That way I can minimize servers downtime to just a few seconds..If that would work, then the last step would be to move the 10Gb networking module from old member to the new one, as well as the secondary PSU. Is it doable? Also according to the documentation, all I need to add new member is matching IOS version, correct?
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Aug 6, 2012
I have a pair of 3750E-24PD-S stacked together, it seems after stacked together the stacked switch always flood the console screen with these messages which are not true: [code] Switch-2 is the stack member, Switch-1 is the stack master. The RPS fan failed refers to RPS2300 or the internal power supply of 3750E? Even when I turned on the RPS2300 the stacked switch still display the messages. Also I have two RPS2300 serving stack master and stack member respectively both RPS2300 were switched off why the messages only refer to Switch-2 and not Switch-1? [code]
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Oct 31, 2012
I have 3 switches in my 3750 X stack. I am getting the following error in the logs: %PLATFORM_STACKPOWER-4-PRIO_CONFLICT: Switch 1's power stack has conflicting power priorities. Not sure what I should do next. Below is my Stack-power configuration:
Power stack name: Powerstack-1 Stack mode: Power sharing Stack topology: Ring Switch 1: Power budget: 735 Low port priority value: 20 High port priority value: 10 Switch priority value: 2 Port 1 status: Connected Port 2 status: Connected Neighbor on port 1: c464.1308.7900 Neighbor on port 2: e8b7.4827.e680
Switch 3: Power budget: 729 Low port priority value: 22 High port priority value: 13 Switch priority value: 4 Port 1 status: Connected Port 2 status: Connected Neighbor on port 1: 2894.0fd9.9f00 Neighbor on port 2: 2894.0fd8.e200
Switch 2: Power budget: 690 Low port priority value: 21 High port priority value: 12 Switch priority value: 3 Port 1 status: Connected Port 2 status: Connected Neighbor on port 1: 2894.0fd8.e200 Neighbor on port 2: c464.1308.7900
Each switch has its own 715W power supply in it and all check out OK.
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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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Dec 18, 2012
The stackwise marketing info states that when a failed member is replaced with a new switch the replacement switch "gets the exact configuration of the old device". I would figure it takes a little more than just disconnecting and connecting a new switch in the same spot on the stack. doing this with 3750 family switches? What are the steps to prepare the stack for a new member? what steps need to be taken on the replacement switch before insertion into the stack to make sure it gets configured like the unit it was replacing?
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Jan 22, 2013
We currently have as our stack master a 24 port Non-PoE that we want to replace with a 48 port Non-PoE. The 48 port switch at one time was provisioned as switch 3 in the stack (not the master). Correct me if I am wrong, but theoretically all I should need to do to get this working is to shut off the existing master so it re-elects a master and then provision the 48 port switch as the new switch one and make sure switch 1 has a high priority?
Do I need to write erase the switch that is replacing the current master first?
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Aug 28, 2011
We have 2 of the SG200-26 switchs. When ever we loss power all the settings are reset to default. Even if we loss power for 1 min. This includes the IP, user, password, etc. How can I change this so the settings are saved?
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May 6, 2012
we have two WLC model 5508 with software version 7.0.116.0 (25 ap supported for each), i tried to add a new access point air-lap1131ag-e-k9 but after five minuts (maximum) the ap reboot, i replaced :
- power injector
- AC/DC adapter
- patch ethernet
- switch port
- switch
- ip of the access point
- reset a default of all access point i tried
- reboot of both wlc
I took the ap and connected directly to the switch (with or without power injector), but the access point reset with this reason.
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Sep 19, 2012
I know there were a few post about users losing their access point config after a power loss to the ap. I wanted to share that I can confirm and reproduce this same issue with a number of access points that I have. I opened a tac case and will update this tread as the case progresses.
Wlc 5508
Ap 1242
7.0.220.0
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Jul 12, 2011
I'm using Comcast cable with a Linksys WRT4Gs wife router. I live in an older building which loses power for a little while (10 minutes or so) with every big storm. Every time the power comes back the linksys router completely resets...I have to plug into it and change the SSID, turn security back on, enter the password again, and then I'm fine...can I prevent this from happening? Before I plug into it I see both networks available (mine under my name, but I can't connect to it, and linksys as a public network), is there a step I'm missing to make my router remember it's identity?
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Aug 26, 2012
well, i just bought an E4200 and, by the way, was very hard to configurate. But the real problem is: if there is a power loss, both modem and e4200 lights up, but no internet connection is provided.Even the SSID desappear. I trried to disconnected everything, reconnect by parts, but no success.I wired connect the E4200 to my iMac and the router was ok, configurated.Then, i reconnect to the modem and all worked ok.Now im testing possibilities and is i reboot the router, the net desappear and i have to try possibilities till it works.
My older router connected automatically, without a problem, but i decide to buy "the best" brand and its top product". Now im disappointed..
Twice i realize that if the connections drops out, i have to disconnect and reconnect the internet cable from my E4200...
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Jan 25, 2013
I have 3 WAP321, all set to uk time zone, all the settings restore apart from the time, on reboot that defaults back to 1999 despite NTP server listed, interestingly have to manually reset time to present before NTP will update it.
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Aug 11, 2012
I own a CISCO Linksys 3500 router I use in my home. Every time there is a power outage, the router stops working. The only way I have managed to get it to restart is to remove the software, disconnect the router and then re installed and set up the router again
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Dec 18, 2011
I'm loosing about 40GB of data. If worst comes to worst i might go with another brand of router instead as i don't wanna waste a lot of money again as i currently feel i have with the E4200. Enough whining, here is my problem. The FTP and Media Server feature works nicely. I have a 2TB USB 2.0 HDD attached to the router's USB port. I use it for images and my music collection ripped there so i can play it all from my PS3 and TV. I also have many GB of video recordings and converted DVD discs for easier access. (And no, before anyone speaks of piracy, it IS legal, at least in my country, to back up your legit media) Now, everything worked fine, until one day after a few weeks, the router hanged for some reason so i decided to reboot it. To my disappointment it also wiped video and audio from my HDD which really got me pissed as i lost all track of what i had on the HDD. The Media Server was also having connection issues once in a while so i decided to update the firmware from 1.0.00 to 1.0.03. It immediately fixed the connection issues of the Media Server. Another noticeable change is that files transferred via FTP will show immediately via the Media Server without the need to update the database via the router as i needed to do in 1.0.00. Now today there was a power loss in the neighbourhood so the router went dead along with the HDD. To my big disappointment, everything was gone from the HDD when i started it up again. Images, music, video and even my application backups etc. It was just plain empty except for the root folders. I have done a few tests and figured that even if the HDD stays on, cutting the power to the router will wipe the connected HDD. What's up with that? Even a silly Windows PC wont nuke your files that much if an accessed HDD was disconnected while in use. Do i really need a UPS system for the router and safely disconnect the HDD from the router via the user interface every day? If so, the concept of having a router with these nice features is really useless and money theft in my opinion.
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Jul 24, 2011
So I have an WRVS4400N V2 and just got a new laptop with an Intel 6230 Wifi card in it and have an odd problem.While the laptop is on battery power the network gets massive packet loss.
I don't know what to do.Laptop manufacture says its AP but AP worked fine with old laptop and works fine when laptop is on power and all other devices seem to be fine with the exception of my Xbox 360 that wont connect if I have it on WPA2 but I will post another thread for that.
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Nov 12, 2012
I could see ping loss whenevr i ping to Ip of the phone which is connected on 3750 Switch.
Port is part of data vlan and voice vlan...
interface GigabitEthernet1/0/2
switchport access vlan 10
switchport voice vlan 100
[Code].....
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Mar 12, 2012
I have two WS-C3750X-48PF-S in stack, but every one has just one power supply. In the package of the switches is included one stack power supply cable.does it make sense to use stack power cable if every switch has just one power supply ??
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Aug 23, 2011
I have a stack of five 3750X's connected in a single stack with the stackwise cables. Within this one stack, I created two power stacks, one power stack has 3 switches and the other has two switches. In each of the separate power stacks, one power stack port on a switch shows "shut", so the power stacks are not operating in a full ring. Is there a way to do a "no shut" on those stacks ports that are shut? IOS is 12.2(55)SE1
Here is the configuration -
stack-power stack XXX
stack-power stack YYY
!
stack-power switch 1
stack XXX
stack-power switch 2
[code]...
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Oct 26, 2011
Any issues are reported while configuring power stack ? We did several times with 12.2.58SE1 and SE2, sometimes the power stack is created automatically, sometimes needs to be configured manually. Looks like the behavior is not the same. Maybe it depends on the number/type of switches and number/type of power supplies.
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Oct 26, 2011
Does the color strips on C3750X stack power cables mean anything, I mean the green and yellow ones. On all Cisco pictures the green one seems to be plugged in the upper ports. I asked local Cisco representative, but he seems not to be sure. We tried to try different scenarios, and it looks like it does not matter what cable end we use. We do not have any external power supply, only interconnecting C3750Xs.
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