Cisco Switches :: How To Remove SLM248G4S From Stack
Nov 1, 2011
I have 3 SLM248G4S switches in a stack (SW1, SW2, and SW3), and want to pull one out and configure it as a stand alone.
If I just disconnect the stacking ports from SW3 and reconnect the bottom stack port from SW2 to the top one of SW1, the two switches continue to function together fine, but SW3 still seems to think it's part of the stack (still shows #3 on the LED screen) and doesn't work at all. I cannot even telnet into SW3.
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Feb 20, 2012
I have been given 2 x 3750 switches that were a stack, I need to keep the configs on both but how do I make them individual switches again and remove the stack info?
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Jun 19, 2011
I have a SLM248G4S but do not have the IP, Username or password, Is there a way i can get on the unit or do a master reset without logging in to the gui?
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Feb 15, 2012
I looking to buy SGE 2010 swith, but I have some question:
1. Can I use 4 SFP ports and stack of two switches at the same time.
2. Is it possible to use for stacking ports other than 24, 48?
3. What is maximum possible number of ports to use for stacking (can I get more than 1Gb thruput).
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Mar 6, 2011
I want to remove the DD-WRT firmware from my router.It is a TP-LINK TL-WR740N V2.1 router.I want to set it back to its original firmware.
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Oct 3, 2011
I would like to find out if the Cisco SFE2000p supports Link-Aggregation in a stack. For instance Unit 1 interface 1 and Unit 2 interface 1 in the same LAG?
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Jun 28, 2012
Can I create lag betwen stack unit to increase speed between units ?? stack connection is only 1Gbit on ports 24/48 if posible lag link must be in trunk mode ?
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Mar 8, 2012
I have 3750 stack with 4 switches.I am trying to make change some port to new VLAN, but switch 2 & 3 new change never works, the ports stick with old VLAN. Other two switches works as I expected on new changed VLAN.Tried to reboot, no progress.
#Show VLAN command confirmed the VLAN changes are made.
#show switch detail
Current
Switch# Role Mac Address Priority State
--------------------------------------------------------
1 Member 0019.e752.xxxx 1 Ready
2 Member 0015.f9bf.xxxx 1 Ready
[code]......
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Jul 15, 2012
I have to setup my first flex stack and wanted to make sure I do it right. I have the physical aspect of the stack down. From what I gathered I have to setup the master switch as the highest priority and then provision the other two switches. But I have configs on the other two switches, do I have to delete them? And do I have to setup individual ips for the two slave switches, because from what I saw the master switch is the only one with an ip address? The master switch is a poe 2960S-48LPS and the two other switches are 2960G-48TD
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Jun 2, 2013
I wonder if i can make a stack with 3 SG500-28.
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May 15, 2013
I would like to know how to stack 2 switch cisco 3550 that IOS C3550-ipservicesk9-mz.122-44.SE6
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Apr 17, 2012
I am running LMS 4.1 and have an issue with Inventory: I have a stack of four 3750 switches, but only two of them are showing up in CiscoView. If I right-click - Topology - Device Report ; I see all four switches. The switches are standard 3750 switches and should be included in the Device Packages for CiscoView
Also if I go Reports - Detailed Device ; I see the same two devices show up under Module Information. However when I go to Reports - Device Attributes ; I see all four devices correctly displayed.
I have tried and deleted and added the stack in CiscoPrime, but with same result.
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Jul 8, 2012
I have 2 switches c3750 which I want to install in stack to replace two Nortel switch that I have in production.
When connecting my new stack of cisco switches to a cisco router c3750 to 2600, they begin to restart by itself. I mean, There is a cisco router 2600. which I want to connect to the stack of switches. The problem is that when the switches connect to the router it begins to restart.
If you need to see the running config of the cisco Switches or the 2600 router.
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Dec 13, 2011
Recently, we had a 3750X stack of 9 switches reload with no information as to why. Our syslog server received no spurious errors regarding the cause nor did the location lose power. The UPS to which it is attached logged no glitches relating to power. Other cisco devices (router, other switches not in the stack) did not reload. No one was in the MDF during this time. We self insure these line of switches so a TAC case is not an option at this time. Any forensic tools that I could try in an attempt to narrow down the cause.
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Mar 22, 2013
Im trying to recover the password from my stacked switchs(doing procedure on master switch),im following a guide i have read in this forum("SRW248G4 V1.1 unable to reset password"), at console terminal have chosen "password Recovery" it prompts the "current password will be ignored" and then i hit "Escape" the switch start loading de configuration, at this point i attempt to login from telnet or http but the login fails.
Here is the password/username combo im using (admin/blank ; admin/admin). Is it possible to restore admin password or should i just hardware reset the switchs?
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Jan 10, 2012
Symptoms: The switch hangs - after a hard reboot and after two hours switch No. 2 flew out from the stack. After the reboot, everything returned to normal and now when a few days passed switch works without problems. Devices: WS-C3750X-24T-S
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Oct 11, 2012
I purchased 2 SG500x switches that I will stack and connect to a NAS device at 10G. I need to purchase transceivers. The documentation has me confused. I just want to make sure that I can use SFP-10G-SR to stack and as the interface to the NAS. S1/S2 for stacking and XG1/XG2 to connect to the NAS all at 10G.
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Sep 25, 2012
I would like to ask if it is possibe to stack a 3Com 3cr17161-91 to a layer 3 Cisco Switch? The two will be stacked using the avaialble SFP modules.
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Jan 24, 2013
I just deployed two stacked SG500X switches. I noticed these messages in the log (see below). Despite these messages everything appears to be functioning.
21474818342013-Jan-25 11:41:17Warning%Stack-W-LINK DOWN: link 0 on unit-2, aggregated (369)
21474818352013-Jan-25 11:41:17Informational%Stack-I-LINK UP: link 0 on unit-2, aggregated (369)
21474818362013-Jan-25 11:37:25Warning%STCK SYSL-W-UNITMSG: UNIT ID 2,Msg:%Stack-W-LINK DOWN: link 0 on unit-2, aggregated (1)
21474818372013-Jan-25 11:37:25Warning%Stack-W-LINK DOWN: link 0 on unit-2
21474818382013-Jan-25 11:37:25Informational%Stack-I-LINK UP: link 0 on unit-2
[Code]....
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Aug 3, 2011
I'm using a stack of four SGE2000P switches for a PoE video camera system. I've got the cameras in a VLAN and everything's working fine.
I'm wondering, though, is there a way to find out what data rate the stack interfaces are working at (since it's going over cable infrastructure we put in ourselves), and also what percentage of that bandwidth is being used? I don't see anyway to get to those interfaces from the main page, and I wasn't able to find a way to do any sort of percentage thing even on a regular interface.
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Oct 20, 2009
I have a 3845 enabled for CDP connected to a stack of 3750 switches. From the router, i dont see any CDP neighbors. From the switch, i can see the router as neighbor. Why isn't the switch showing as a neighbor from the router side? [code]
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Jul 11, 2012
I have two 3750 layer3 switches and I need to connect them via stack cable.so if I connect them with the stack they will be act as an one switch, but for the configuration if I create a VLANs on the master switch (applied all the configuration on the master one) this configuration will be transfered to the slave one or I have to repeat the configuration that I did on the master.
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Aug 6, 2012
Looking for feedback from other organizations that have large 3750 stacks. I've got one stack of (8) 3750's composed of (6) 3750G's and (2) plain 3750's. This particular stack is usually unresponsive to SNMP queries and often fails to write config when we make changes. After a couple tries it will finally go. Part of my probably here is likely the plain 3750's that always boot faster and come up as the master. I should manually set the master to one of the G's. What I'm wondering is who else has 7-9 3750's stacked and are they performing well for SNMP, telnet, etc? I've got another newer stack of 7 3750E's that I need to add one more switch to. Need to decide if I want extended downtime to break the stack up or just add the 3750X to make member 8 and hope it performs well. I have 50+ 3750 stacks working great on our campus.
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Nov 13, 2012
I am trying to do ios upgrade on 5 stacked 3750 switches. All the switches have different model number, so i am wondering which image file i should download. As far as i understand all the stacked switches should have the same IOS, i may be wrong. The switches have the following model numbers and SW images;
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
1 28 WS-C3750G-24PS 12.2(35)SE5 C3750-IPSERVICESK9-M
* 2 28 WS-C3750G-24PS 12.2(35)SE5 C3750-IPSERVICESK9-M
3 52 WS-C3750G-48PS 12.2(35)SE5 C3750-IPSERVICESK9-M
4 30 WS-C3750E-24PD 12.2(35)SE5 C3750E-UNIVERSAL-M
5 30 WS-C3750E-24PD 12.2(35)SE5 C3750E-UNIVERSAL-M
which image file i should use as they all have different model numbers and Cisco provides different image files for each model.
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Jan 27, 2013
We have several stacks of 3750 switches where this problem is occurring. All of the switches are running IOS version 12.2(50)SE3. (Yes, I know it's old.)
We're seeing inconsistency in how the stack reports members when issuing the following commands:
sow switch
show version
show inventory
Not all members are showing up in the output of the "show version" and "show inventory" commands. For example:
HUNTI-WV-WDAC03#sh switch
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
1 Member 108c.cff2.ea00 15 0 Ready
2 Member 8cb6.4f0a.a600 1 0 Ready
*3 Master 8cb6.4f0a.9c00 1 0 Ready
(all three switches in stack are displayed)(code)
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Nov 11, 2012
I have several SGE2010P switches connected in a stack. They are working fine as a stack.
Question is - what traffic, besides stack control, is carried over the stacking links?
All unused ports are VLAN 1U. Ports in use belong to VLANs 100, 101, and 105.Since I cannot configure or see the stacking ports, I am unclear if any non-default VLAN traffic passes over those links between switches?
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Jun 10, 2013
we have two ASA 5510 connected in failover, and a pair of cisco 2960s switch connected in stack. Currently one interface of primary ASA is terminated on switch1 and a interface from standby is connected to switch2 as Inside, and switch1 and switch2 are in stack. for redundancy purpose i want to use multiple interfaces of ASA for inside , so first i thought to use etherchannel , but it has a limitation that , it cannot be terminated on stack switch(as per cisco document [URL]
So my question is :
1. can we use redundant interface feature where 2 physical interfaces combined to a redundant interface (eg interface redundant 1) for inside redundancy purpose.
2. Can these ports from primary/standby ASA terminated on stack switches (2960s), will this work (if the switch with active port goes down, will the other port take over in the redundant interface with the other switch).
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Mar 26, 2012
I am wanting to etherchannel from a 3750 stack to core Layer 3 switches (also 3750) with a cable going to each core switch, I have put both core switches and the stack under a 28bit subnet mask, but I dont seem to be load balancing across both links.
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Sep 22, 2012
I have 3 3750 staking switch with the following configuration:
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
1 Member 442b.0350.9400 1 1 Ready
2 Member 442b.0357.8780 2 1 Ready
3 Master 442b.036f.a800 3 1 Ready
The new switch is installed to be wired to the master switch. the swtich 3 (* 3 Master Ready 442b.036f.a800)my question is: if you disconnect the wiring from the master stack to connect to the new switch, it is possible that the new switch change the current configuration of stacking.
-Can I just add the new switch with clean configuration without changing the current configuration ?
-How is assigned the stack number? i need the new switch be with the GI4 / x?. I can I manually by assigning ports?
-If I want to the new 3750 member witch lower prioridad, can I change priority before adding to stack?
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Mar 7, 2013
Can LMS 4.1 give a report for port capacity in stack switches? We are starting to have issues where our techs are going out and plugging devices into switches and the switches are getting full. We would like to be able to see how many ports are left in each switch.
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Nov 25, 2012
before I open a TAC case: How does Cisco Prime NCS handle the device licenses for stack of 3750 switches? Just one device license for the stack or a license for every physical switch in the stack? I can't find a answer on the Cisco website, but maybe one of you knows it from a deployment you have done..
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Jan 17, 2013
Is it possible to configure a cross stack etherchannel between 2 SG500 (in stack) and 1 SG200/SG300?
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Oct 11, 2012
I would like to use flexstack to stack two Cisco 2960S 48 Port switches (2960S-48TD-L) for redundancy. Each switch will have a single 10G uplink into our Nexus 7K. One switch in the stack will terminate to linecard 6 (N7K-F248XP-25) and the other switch will terminate to linecard 7 (N7K-F248XP-25). My question is how many flexstack cables are needed? Do I need only one cable or do I need two to connect the two 2960s ?
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