Cisco WAN :: 3750 / Licensing Upgrades For Stacked Switches?
Nov 15, 2011
I have a 4 member stack of 3750's. We would like to take advantage of wccp and we understand that we will need to upgrade our switch licensing from IPBase to IPServices. My question is do we need to pay for a license for each member in the stack or does one IPServices license upgrade cover the whole stack?
WS-C3750G-48PS
WS-C3750G-48TSWS-C3750G-48TSWS-C3750G-48TS
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Jul 16, 2012
We have two 3750-x stacked switches with IP base license. We need to upgrade them to IP services license. I read some where that it is possible to install IP serivces license to only management switch and no need to purchase/install same license to other switches on the stack. But, I could not find/recall where I read it and as far as I know it was not official cisco documentation.
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Feb 29, 2012
We have just under 500 switches in production (various models but for this discussion we'll stick with 3750's). All are currently running tar IOS (web based). We want to upgrade the IOS from c3750-ipbasek9-tar.122-55.SE1.tar to.122-55.SE5 but some of our switches do not have enough flash to upgrade successfully. We use CiscoWorks to distribute our software upgrades. I know you can lower the flash requirements on the IOS in CiscoWorks, which I have done (changed from 16Mb down to 12Mb) and the upgrade still fails.
1) How far can I lower the flash installation requirements in Ciscoworks and what are the ramifications?
2) If we decide to change from the tar IOS version to the bin IOS version because we don't even use the web based features anyway, is there an easy way to do this? (CiscoWorks will not upgrade an image from tar to bin)
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Apr 15, 2012
Im trying to stack 2 3750E-24PD-S and 2 3750X-12S-S. The 2 3750E finds eachother and stacks with one master as they should. The problem is that and the 3750X does the exact same thing instead of joining the 3750E stack.Both runs the same IOS (c3750e-ipbasek9-mz.122-58.SE2).The stackingcables are connected like following atm (I tried booting up the switches one at a time and all at once, no difference in the result).
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Dec 16, 2012
We have 3 SG500-52 switches that are stacked and configured for layer 3 that replaced a couple of SG2010 switches a month ago. Switch units 1 and 2 are for servers and unit 3 for the workstations. The switches are connected with stacking SFP+ copper cables, 1 1M and 2 7M cables. The problems are occurring between the workstations and servers resulting in slow traffic on some links and connection failures. A repeatable failure occurs doing a backup from a PC on unit 3 to a server on unit 1 and 2 (2 port LAG). Moving the workstation to a port on unit 1 results in successful backups every time.
Initially I was able to confirm packet loss between my PC (on unit 3) and the servers using ping (ping -f -c 100000 -s 1460) of about .1%. The iperf program in udp mode also showed some packet loss and in tcp mode showed slow connections. A week ago I then upgraded the switches from v1.2.0.97 to v1.2.7.76 and rebooted. After that the ping and iperf tests show no problems although there are still slow connections to samba shares and the backups still consistently fail.
I suspect there is a problem with the stacking connections and have searched for traffic statistics on the stacking ports to look for errors but have not found anything. Doing a snmpwalk didn't reveal anything that I recognized. There are interface counters for all the ports except the stacking ports.
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Feb 18, 2013
We're running two 5508 WLCs running 7.0.235.3 pushing out 7 WLANs. They are both live. Each WLC is connected to the same stack of 3750G running 12.2(44)SE6 via Etherchannels.I'm getting tons of MAC flapping errors similar to this:9373213: Feb 19 10:53:54.564 CST: %SW_MATM-4-MACFLAP_NOTIF: Host 843a.4b3c.4cec in vlan 752 is flapping between port Po12 and port Po11Each portchannel consists of ports on each of the two switches in the 3750 stack. Only VLAN 752 shows the flapping activity. LAG is enabled on the each of the WLCs. The portchannel and interface configs are identical, minus the channel-group command of course.Maybe completely unrelated....looking at CDP neighbors from the switch is incorrect:
WLC1 Gig 2/0/44 157 H AIR-CT550 Gig 0/0/1
WLC1 Gig 1/0/21 157 H AIR-CT550 Gig 0/0/2
WLC1 Gig 1/0/20 157 H AIR-CT550 Gig 0/0/3
[code].....
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Jun 3, 2013
I was wondering what general steps might be taken in order to "replace two(2) 3750 (stacked) with one (1) 3750X - Server Access". General steps and what I might have to do configuration wise. I know i'm copy pasting the existing configs into the new switch, but are there any caveats?
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Apr 13, 2013
We are planning to implement the redundant physical connection from 5508 WLC to not stacked 3750 switches. The sheme is attached.
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Jul 1, 2011
We've have a 2 SGE2010-48 port, stacked. 4 LAGS are denifed, two on primary, whitch are working, two on slave unit are NOT working. Devices connected to LAGS are de the same and same configuration (Cisco ASA 5510).
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May 10, 2012
I am about to buy 2x Series 500 switches but before that I have a design to be sure :I want to create a redondant network so it is the reason why I want to stack 2x Series 500 switches.Each server on my network (ESX and Windows 2008) are connected with two NIC (one port on the first switch , one port on the second switch), with trunk mode + etherchannel for LACP.
First question : I saw that the limitation is up to 8 etherchanel groups, can I have a mix of multiple servers on the same etherchannel group or should I create one etherchanel group for one server with only the two NIC inside?
Second question:I want to use the series 500 to do intervlan routing and want to be sure that if the the ports are in trunk mode with some vlan set on the card itself that the default gateway for the vlan will be propagated on the two switches (in stack mode) and will not cause any issues when both switchs works fine and if one switch crashes?
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Oct 29, 2012
I upgraded an image on 3750 from Lan base to IP base, it worked fine. howver im just wondering if there any licensing implications, did the upgrade a few weeks ago, would the switches still work on a temp license somehow?
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May 28, 2012
How many Switches can be stacked with WS-C2960S-48FPD-L at a max..
As per my Knowledge it is 4 and as below..
Switch 1 to Switch 2
Switch 2 to Switch 3
Switch 3 to Switch 4
Switch 4 to Switch 1
If yes then, is it mandatory to do the "Switch 4 to Switch 1" stack. why am I asking this is because this stack requires a long cable and the cable which comes with the Switch is only 0.5M.
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Apr 2, 2012
My company is beginning to have a lot of sites were we are stacking 3 to 4 C2960S-48 switche.This is making "show running-config" very very long because of the 4 x 48 interfaces.I can’t find a CLI command that show me the running-config of a ranges of interfaces. If I for example would like to see running-config for switch 3 (interfaces 3/0/1-52)The Show Running-config will show all the interfaces (for the two first swtiche = 104 interfaces), which take a time before I reach to switch 3.I miss a CLI command like: show Running-config switch 3, or module 3, or show running-config interface range x/x/x-x ?I’m well aware of the CLI command show running-config interface x/x/x, but this will only show me one interface.
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Nov 17, 2011
We have been set the task of securing a small managed office system which is currently set up with a standard switch allowing each of the offices (containing different companies) to see each other, and in some cases, access each others documents across the network.
Obviously this is a far from adequate set up and our aim is to isolate each office using VLAN's but share a common internet connection provided by the managed offices. We have two Cisco SGE2000-G5 layer 3 switches but we are new to Cisco equipment and VLAN's so we are not quite sure on how to implement this. DHCP would need to be provided by a Router, there is no Server. We are open to suggestions on the Router as we have yet to purchase one.
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Feb 25, 2013
I have two 3750x stacked switches , both with the latest firmware on them. I enter the configuration onto one switch and it obviously copies over onto the other switch. Although in the configuration I have both a console username and password and an enable password, when I try to log onto the initial switch that I entered the configuration on, I am prompted for a username and password, which works fine, but when I try to enter enable mode i get an error stating that no password has been set. However when logging onto the other switch I am not prompted for a username or password but when I try to enter enable mode I am prompted for a password and can access it with no problems.
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May 21, 2013
I am having some question around Prime Infrastructure..Does a general document exists regarding the licensing count of monitored devices ? Indeed I am wondering about the specific points. Is it true that :
- A 3750 stack unit count as one (for example a 4 units stack consumes 4 license) ?
- A WLC (except 5500) does not consume a license but only the Lightweight APs.
- An autonomous AP does not consumes a Lifecycle licence ?
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Nov 18, 2011
If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
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Nov 14, 2011
If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
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Nov 13, 2012
We have a 5525 that has not been deployed to production yet so we're using it in the lab. I want to lab some upgrades from 8.2 to 8.6 for some customers but the 5525 comes loaded with 8.6. Would there be any problem with reimaging the 5525 with 8.2? I'm just not sure if there would be an issue with this new hardware running that old software.
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Apr 1, 2013
I have WLC 2125 on version 6.0.182.0 and AP's on version 12.4(21a)JA.I also have a load more AP's (newones) 1041's with IOS version 15.2.
So i have to upgrade my WLC because the newones are not compatable with the old WLC version.What will happen to the old AP's ?I was told they will automatically update the IOS version.These AP's (oldones) are not on site, they are in a differnet LAN.
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Sep 12, 2011
I'm running a WRT54G as my main router with an old Buffalo router (125g I think) as a repeater. Both are running DD-WRT.
I'm looking at upgrading to a pair of netgear 3700's; also capable of DD-WRT. These have several times the RAM and ROM of the stuff I'm running now. The processor is also about 3.5 times faster as well.
If I do this, should I expect to see an decrease in ping (gaming) or an increase in general performance of the network? Also, there is a lot of video streaming going on, but little/no torrenting. We only run about 5-6 devices on the wireless network, but it has to span 4 floors.
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Feb 25, 2013
I have seen this on 4 ASA devices:At devices running older versions than 8.4(5) it is possible to update to 9.1.1 but after updating to 8.4(5) the devices tells me that "There are no upgrades available, your system is up to date" when I "Check for ASA/ASDM updates". I downgraded one device to 8.4.4 and tried to upgrade to 9.1.1 but the update was unsuccesfull (could not boot).
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Dec 11, 2011
I just got my DIR 825. It had 2.02NA Firmware in it. It had a few options that I wanted to use but didn't work. So I thought I would update firmware. I follow the instruction from dlink to install firmware. So I loaded 2.03 and noticed internet connection not working. So then I loaded 2.05 part1 and part2. Still could get internet connection to work but the reason to upgrade the option I wanted worked. So then I loaded 2.06 and still same result. No internet connection. So then I loaded the original firmware back in and internet connection works. Why doesn't the internet work on the other firmware updates. I got the updates from dlink website. I would like to update firmware
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Dec 1, 2012
I've just bought a dcs-2130. Any tips on setting up. Win7 and android based devices and any pointers to any firmware upgrades?
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May 12, 2013
I'm designing a hierarchical 3 layer campus network with different switch blocks .We need 10Giga Ethernet in the core to distributions and access layer , I was thinking about using a pair of catalyst 4509E in each block.after that I got interested in 4500Xs , in comparison with 4509Es they are much thinner and saves more room in rack space .I wanna use 4500X in my distribution layer .
The question is , as you know 4500Xs have 40 10Giga Ethernet ports , in some of my switch blocks I have more than 40 access switches (40 uplikns to distribution ) i wanna know how many of 4500Xs can i stack together ?
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Oct 19, 2011
I have a pair of switches stacked:
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
1 52 WS-C2960S-48FPS-L 15.0(1)SE C2960S-UNIVERSALK9-M
* 2 52 WS-C2960S-48FPS-L 15.0(1)SE C2960S-UNIVERSALK9-M
When I try to enable ip sla responder on the stack I get:
%SYS-3-HARIKARI: Process IP SLAs Responder top-level routine exited
I have been able to find a bug in the toolkit. Should ip sla responder be supported on the stack as above?
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Jun 6, 2012
I'm trying to see if I can use both ethernet ports on a 2811 to run hsrp for non-stacked dual switch fail over. Then link the the NM-32A ports to L0, so the remote access server trying to use them can use the l0 ip and failover much faster (it's programming is limited). This is on IOS 12.4(25)f, though we are moving to 15 soon.
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Jan 2, 2012
If we have 3 stacked 3750s# running Layer 3. Do we need license for every switch? or is it one license for the 3 switches? Also is the license associated with the MAC address of a specific switch? What i# am trying to know also, is if we have to install one license and it is associated# with one MAC and this switch failed.. will the Layer 3 be broken?
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Feb 27, 2013
I currently have a stack of 3750G switches with a cross stack etherchannel connected to a 3750E stack in the distribution layer.The 3750G stack is running 15.0-2SE IP Base. I began noticing the Mac flap issue when I was Re-enabling dot1x on the switchports. As first I thought dot1x maybe have contributed to this so I removed it from the stack temporarily.I am still seeing Mac flap logs usually when a machine reboots or re-connects back to the network. These are all wired desktops.I started looking at the etherchannel configuration which is using LACP. The 3750E stack looks fine with all ports in mode active. On the problematic 3750G stack I noticed 3 of the ports in the etherchannel set to mode active and 1 port set to mode passive. The port shows as bundled but I can't imagine this is ok.The only other difference on this one port is there is no mls qos commands like on the other 3 interfaces in the port channel.I mainly need to know what the Mac flapping is about. Whether it is a bug or related to the current etherchannel configuration.
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Mar 17, 2013
I have a customer who just bought a pair of N5K and wanted to replace his current HP E3800 as Core. He wants to use the 4 x stacked HP E3800 connect back to the N5K. Will I be able to utilize VPC through a bundled 2 or 4 x 10G (40G) connection (10 or 20G on 1 switch, and 10 or 20G on another switch) from the stacked HP E3800s to the N5548s? I know you can do that with Cisco 3750s.
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May 28, 2012
We have PC's that connect through the Siemens IP phones and back to the cisco 3750 which is connected to our core 6500 via L3. The phones use a voice VLAN and the PC's use another VLAN. The whole setup seems to work ok but I was just wondering if the QOS was configured correctly. Our current config on our 3750 switches are mls qos trust dscp on the port that connects to the phone and PC and mls qos trust dscp on the L3 links. The phones are configured for "QOS L2/L3"From the reading I've done so far it seems that any ports connected to a L2 device should be set to cos and not dscp?
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Oct 12, 2012
We are running CISCOWorks 4.0 (LMS).I can connect to and update the majority of my 3750's but I have about 20 that result in failure when attempting to update the image on those devices.The return error is "SWIM50001: Cannot connect to the device "IPAddress" using SSH and TELNET." When running "sho ssh" you see connection for the current ssh tectia login but nothing pointing to the ciscoworks device.When I run "sho ssh" from a different device I see both connections, 1 from my desktop ssh connection and the other showing username of ciscoworks.I ran the Discovery tool, again, but no joy.I was looking for a manual way to add that connection but again nothing. How to make the ssh connection between ciscoworks and the edge device?As I said I can ssh from my desktop and manage the box that way but ciscoworks simply won't allow it.
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Feb 13, 2013
We have 2x Cisco 3750 WS-C3750-48PS-S and 1x WS-C3750-48PS-E in stack mode. They all work well. Currently they have c3750- ipservicesk9-mz.122- 25.SEE2.bin on them which is deffered by Cisco. What would be a good alternate, stable version for my switches? Switches have 16MB flash and 128mb Ram.
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