Cisco Switching/Routing :: 3750x Stacked Switches With Latest Firmware
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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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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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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Dec 28, 2011
what is the latest firmware for cisco 1841 ? is firmware and router IOS image are same ?
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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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Dec 12, 2011
We have Sg-300-28 serious switches(SRW-2024 k9-EU) and i want to upgrade switch with latest firmware, any info for latest firmware is used for the same ?
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Mar 24, 2013
I have a SF300-24P switch running version 1.1.2.0 firmware. I want to get to the latest release (1.2.9.44) - can I upgrade directly to the latest code or do I need to step through all the versions in between?
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Apr 2, 2012
I had a strange problem here after upgrading Cisco 3750X.The upgrading was going smoothly, I copied a newer IOS to the flash from another Cisco 3750X through TFTP, changed the boot image.It took a while do to the microcode upgrading, finally, it started to boot up. But when it completes the boot up, I can't see the normal login prompt, but only some strange codes. From what I can see, it seems some decoding problem, as if I plug or unplug a cable from the switch, the strange code pops up again, like in normal situation, the console tells you that the interface is going up and down.
The original image of the switch: c3750e-universalk9-mz.122-53.SE2.bin
Upgrade to image: c3750e-universalk9-mz.122-55.SE3.bin
However, I don't have any problem to telnet to this switch, as it has correct IP address and login configured before the upgrading. I have reboot the switch for couple of times, reconnect to the serial port still doesn't show me anything.I am wonering has any one has met this situation before? detailed message shown after the boot up. cisco WS-C3750X-48 (PowerPC405) processor (revision A0) with 262144K bytes of memory.
Processor board ID FDO1449Z04L
Last reset from power-on
1 Virtual Ethernet interface
1 FastEthernet interface
52 Gigabit Ethernet interfaces
[Code] .....
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Jul 3, 2012
I've got a mixed stack as follows:
Switch 1 - 3750X-24P
Switch 2 - 3750G-24TS
Switch 3 - 3750G-24T
Running 12.2(53)SE2, IP base. Now I tried upgrading the firmware on the entire stack to 12.2(55)SE4 and ran into this error:(Command: archive download-sw /imageonly /overwrite /allow-feature-upgrade tftp://10.20.20.13/c3750e-universalk9-tar.122-55.SE4.tar)
Error: The image in the archive which would to used to upgade system number 2 does not support that system type.I haven't as yet removed the "3750G-24TS" switch from the stack and re-tried as yet, however, is the expectation that without the 24TS, the upgrade should work?
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Aug 19, 2012
Can I implement MACsec betwen two Cisoc 3750X using the C3KX-NM-1G? 3750x (C3KX-NM-1G) -------------------MMF------------------(C3KX-NM-1G) 3750x.
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Jan 25, 2012
How to get vlans working properly between sub-interfaces on a ASA and a trunk port on a switch.There seems to be issue with the VLAN's being assigned to the correct VLAN and this information being properly sent to the ASA over the trunk.
We seem to be unable to ping most of the interfaces except for one on the switch. Sometimes if we are lucky we are able to ping a host on a different vlan that is on the switch. This seems sparadic at best.
Logs on the ASA show traffic does not seem to be assigned properly to the correct sub interface. We have access rules on the ASA disallowing traffic not part of the same vlan. For example you will see networkA blocked on networkB when it really should be directed through networkA's sub interface.
Any example commands for the ASA and Switch for at least the basic requirements to enable all the VLAN's to communicate properly with the ASA?
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Dec 27, 2012
I'm trying to get some clarity on power stacking 3750X switches. I have a new stack of 6 switches. I know I can only have 4 in a power stack and all 6 in the data stack with a max of 8. I'm trying to find the proper way to connect the power stack cables for the 4 switch power stack.
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Sep 4, 2012
I need to know if is possible to do a LACP using 2 x 10GB between 3750X and 2960S (WS-C2960S-48LPD-L) switches.
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Apr 9, 2013
What is the difference between IP Base and Universal for 3750X switches?
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Aug 16, 2012
I'm building a wired closet to aggregate user's connections, Im planning to have 5x 3750X stacked switches and there is a need to run EIGRP, I'm thinking to order one switch with IP service image while the rest will run IP base image, is it workable scenario and what are the drawbacks of such combination of images ?
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Dec 11, 2012
We purchased a number of 3750X 48 and 24 port switches for the College Campus. Am finally getting around to getting them inserted on the network. Working with a WS-3750X-48PF-S and a WS-3750X-24P-L. Have them stacked with the 10Gb uplink on the 48 port switch. Have not been having fun.In the boot sequence, the switches recognize they are stacked, but as soon as they finish boot, I get the message on the 48 port switch: “Stack Port 1 Switch 1 has changed to state down.” Then “Stack Port 2 Switch1 has changed to state down.” Am noticing that I have a message preceding that: “Major version mismatch with stack neighbor.”The 48 port is running c3750e-universalk9-mz.150-1.SE3, HBOOT 12.2(53r)SE2.The 24 port is running c3750e-unversalk9-mz.122-55.SE3, HBOOT 12.2(53r)SE2Most of our 3750X and older switches are running 122-55 or 122.58 code. IP base or Universal. There is speculation that the problem is the 24 Port is Lan base, as the part number might indicate. (WS-C3750X-24-P-L.... I think that is the part number) and the 48 is IP base. Both switches are Universal, and my understanding is that they don't care about LAN or IP Base until you enable a function that falls in the IP Base domain. Then I have to call Cisco Licensing.For these switches, LAN Base is fine, based on the boot message, I feel the real problem is 122-55 versus 150-1 in the stack. So.. the question is: Do I downgrade the 48 port to match what we have in our environment, and what is on the 24 port switch. Or... Upgrade the 24 port switch to match the 48 port switch and have an installation that is not consistent with our environment? I do have two more edge closets to install with this purchase of 3750X 48 port switches.
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Mar 28, 2012
In my office we bought 7 cisco 3750X - 48PS switches. We configured Data Stacking between those switches. We also want to configure Power Stacking between those 7 devices.
I found in the Data Sheet that we can only configure 4 devices in power stacking at a time. If it is like that how to configure the rest of 3 devices. Need configuring power stacking between those devices in a better way..
power stack cable part no we have is
CAB-SPWR-30CM
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May 29, 2013
I have a stack of 8 3750x switches connected via Stackwise. In addition, I have these switches configured as two Powerstacks. When I look at the Powerstacks, they are showing as being in power-sharing mode. When I look at the individual switches, they show as standalone. Right now, I have 1 switch in each powerstack that has two power supplies, and then the other three have a single power supply. Below is the output for "Show stack-power detail" as well as the Powerstack configurations.
Power Stack Stack Stack Total Rsvd Alloc Unused Num NumName Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS-------------------- ------ ------- ------ ------ ------ ------ --- ---Powerstack_1 SP-PS Ring 2145 45 570 1530 3 3Powerstack_2 SP-PS Ring 2860 60 760 2040 4 4Powerstack_1-1 SP-PS Stndaln 1430 520 190 720 1 2
Power stack name: Powerstack_1 Stack mode: Power sharing Stack topology: Ring Switch 4: Power budget: 700 Power allocated: 190 Low port priority value: 20 High port
[code].....
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May 9, 2013
We have a remote site that is using 3750X switches as layer 2 switches back to our home site. The uplink port is showing dropped packets but the utilization on the link is never about 10%. We have a 100Mb circuit to this site. Our speed tests and iperf tests are not showing any issues that we can see. However the port is still droping packets. It is not dropping at a high rate but they are dropping.
switch#sh platform port-asic stats drop gi1/1/4
Interface Gi1/1/4 TxQueue Drop Statistics Queue 0 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 1 Weight 0 Frames 52876 Weight 1 Frames 2 Weight 2 Frames 0 Queue 2 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 3 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 1330874 Queue 4 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 5 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 6 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 7 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0switch#
Is there a way to capture these dropped packets to see what they are? We do have VOIP phones at the site and are using Qos.
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Jul 30, 2011
I'm building a wired closet to aggregate user's connections, Im planning to have 5x 3750X stacked switches and there is a need to run EIGRP, I'm thinking to order one switch with IP service image while the rest will run IP base image, is it workable scenario and what are the drawbacks of such combination of images ?
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Jun 7, 2012
I have a bunch of 3750x switches that each have a 10 gig routed link back to a central 4507 (loopback = 172.30.255.255).We carved up a /24 (of course, the /24 doesn't really exist except in our address tracking spreadsheet) into a bunch of /30's for routed WAN links and /32's for loopback addresses.We started on the low end for /30 subnets (ie 172.30.255.0/30, 172.30.255.4/30, etc.).We started at the high end for the /32 loopbacks (ie 172.30.255.255/32, 172.30.255.254/32, etc.)
Well, when I try pinging 172.30.255.255 from the access layer 3750x switches, the 3750x seems to be treating it as a broadcast ping where it lists each member that responds instead of the regular !!!!! response (this makes think something is odd with the 3750x). Of course, only one member responds (the core). But even the core seems to respond with the other end of the /30 instead of the actual /32 loopback (which makes me think something is odd in the core). I could have sworn that I've setup similar topologies without problems (ie, using 10.0.0.0/32, 10.255.255.255/32, etc as loopbacks) and as long as the mask is a /32, it should work.Also, I can ping/ssh to that loopback if my laptop is on a directly connected subnet. But I can't do it from any of the 3750x switches (which are also directly connected).I've double checked for overlapping subnets, but nope. I don't see any. Routing looks fine. The actual /32 is being propagated everywhere properly.
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Sep 8, 2012
What are the options avilable to add a cat3560 g switch to a stack of 3750x switches.?is there a connector avilable ?or is it possible to trunk via fiber ? cat 3560 has 4 sfps and 224 10/100/1000 ports with poe. cat 3750 stack has a 10 gb up link . What are the possible options?
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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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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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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 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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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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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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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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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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Dec 23, 2011
I bought the DIR-615 router from Futureshop awhile ago because my Linksys WRT54G router keeps dropping connection every couple of hours. I have to unplug the router and re-plug it in order for it work again. On the DIR-615 admin page, it states Firmware Version: 5.10. Is this the latest firmware?
I'm trying to upgrade the firmware because I still experience connection drops from time to time (but not as much as I did with WRT54G)... it usually occurs when multiple devices are pulling signal from the router (for ex. PC#1 + PC#2 + laptop). I've just disabled "Short GI" as mentioned in another forum post here.
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