2960-X stacking, 5 switches with interwoven 0.5 M cables

I am trying to understand how to connect 5 switches using 0.5 M cables only. I have read this "best practices" document, but it leaves some unanswered questions.
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-2960-x-series-switches/white_paper_c11-728327.pdf
I would normally just daisy chain the switches and bring a connection from the bottom switch back up to the top to create a "ring" topology. But the documentation also states that switches can be connected with "interweaved cables". It makes no statement as to what if any performance considerations should be taken into account when designing stack interconnections, or whether this interwoven topology creates any operational complications. The only requirements that I have seen is that each switch must have 2 operational FlexStack links in order to be fully redundant and to fully utilize all available bandwidth. Does anyone have any guidance in this area?
Assuming no negative consequences by using the "interwoven" topology, does this make sense?
Thanks,
-Jeff

Well it probably wouldn't be confusing if I could find a clear set of ground rules. The documentation mentions "FlexStack protocol", but the discussions seem to indicate that this is a control plane protocol. Do the stacking modules operate as ethernet bridges when making forwarding decisions like any other switch port? If the answer is yes then at least I understand the principal of operation. But now if you throw multi-chassis etherchannel uplinks into the mix divining general layer 2 paths becomes a little murky.
Although now that I look at it, using this cabling has an advantage over a straight ring topology. Once a frame hits the stack it is never more than 2 hops away from it's destination. With daisy-chained switches it could be up to 4 hops. This is of course assuming standard 802.1d-like forwarding. This may be an invalid assumption. I don't see any way to get spanning tree info for the stack ports.
(EDIT: standard ring topology would also have a maximum of 2 hops to any switch, not 4)

Similar Messages

Can I Stack Switches with differents Part Numbers? Is it possible??

Hi,
I have a doubt, I need to buy 4 Switches Cisco 3750-X, but 2 with UTP/RJ-45 Ports, and 2 with STP capability.
My question is, for example, Can I stack 2 WS-C3750X-48T-E and 2 WS-C3750X-24S-E??

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
The only limitation of stacking different 3750X models is the feature set of the installed IOS.
I.e.: "The Cisco Catalyst 3750-X Series Switches with LAN Base feature set can only stack with other Cisco Catalyst 3750‑X Series LAN Base switches. A mixed stack of LAN Base switch with IP Base or IP Services features set is not supported."

Using Catalyst 3550 Switch with Linksys Home Router and Cable Internet

I've about pulled what little hair I have out of my head on this one, and need some configuration help.
I have a Cisco Catalyst 3550 switch with five Windows 7 desktops, an Avaya PBX and five Avaya IP phones attached. All of these devices are on a 192.168.0.0/24 subnet, and are communicating properly. I will refer to this as network # 1. I also have SEPARATE network, we'll call network # 2, using AT&T ADSL service and a Netgear 4-port/wireless router/ADSL modem combo device, which is functioning properly with a couple of other Windows 7 desktops over its own wired Ethernet network, using DHCP, and also on a 192.168.0.0/24 subnet. I thought it would be a simple integration, just plugging one of the 3550's ports to one of the DSL router's ports, in order to give the five Windows 7 desktop computers on network # 1 internet access via the DSL modem. Guess I was wrong. When I connect the two switches together, although I get a good connectivity (green lights on both ports) and am able to ping the DSL router's gateway address (192.168.0.252) from network # 1's computers, the computers on network # 1 cannot access the internet. Also, the working computers on network # 2 lose their internet access as long as the two switches are connected together. I am not a Cisco guru, but there's got to be a way to make this scenario work. Can someone provide me with a 3550 configuration that will allow me to extend my internet service from network # 2 on the DSL router to my 3550 switch and their computers? Here's what I am looking for:
INTERNET ---> ADSL MODEM ---> NETGEAR ROUTER ---> CISCO 3550 SWITCH ---> NETWORK DEVICES WITH INTERNET ACCESS

The Netgear router is probably what's doing the natting. Is the 3550 configured for routing or is it straight L2? If you have the 3550 configured as L3, then it's going to be easy to do what you want. Just add a static route on the Netgear to point the subnet that it doesn't know about to the 3550. For example, if the Netgear is addressed at 192.168.1.1 and the Cisco 3550 is addressed at 192.168.1.2, but it also knows about the 192.168.0.0/24 (separate vlan), then you would put a static route on your Netgear for 192.168.0.0/24 to go to 192.168.1.2.
The way that I would do it is to create a separate vlan on the 3550 and assign an address to it. Once you do that, make the port that the other switch connects to an access port of that vlan. (It would need to be on the same subnet as the existing equipment.) All of your devices would use it as a default gateway and then you would do the rest as above. You could also use RIP between the Netgear and Cisco if you can't do static routing.
HTH,
John

LMS and stacking switches

Hi everyone!
I was having a conversation with a friend and he assured that the LMS is stacking switches with up to 09 switches.
Anyone know if this is true? For all I know this is only done through the special interface stack (as in 3750 and 2960S).

LMS (and Cisco Network Assistant) manages Cisco switch stacks. And, yes, a stack is up to 9 switches.
I'm not sure what you're asking, though. Stacks are built by virtue of physically connecting the StackWise cables and that is independent of what, if anything, is used for network management.

ASA Redundant interfaces with stack switches

Hi All,
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 http://www.cisco.com/en/US/docs/security/asa/asa91/configuration/general/interface_start.html ).
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).
I have attached the nw diagram,
Regards,
Ashraf

Hello Ashraf,
1. can we use redundant interface feature where 2 physical interfaces combined to a redundant interface (eg interface redundant 1) for inside redundancy purpose.
Sure, you can. That's the whole purpose of the feature.
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).
It would make sense if that happens, as the status of the interface will be on a different state than up/up so failover to the other interface will be triggered,
Regards,
Julio

Power up cisco 2960 switch with 12V DC Power

hi all ,
I have some issue with supply power to cisco 2960-24TT-L switch. In my server farm rack is having DC current of -48V. But however cisco switch require 12V DC current.
Cisco Spec.
Cisco Catalyst 2960-24TT-L
12V at 5 A
5 A
How can I power on the switch using DC current ? Is there any power converter which I can purchase ? your responses are very much.
Thanks

You may also go here:
https://supportforums.cisco.com/community/netpro/small-business
The Search Function is your friend.... and Google too.
How to Secure your Network
How to Upgrade Routers Firmware
Setting-Up a Router with DSL Internet Service
Setting-Up a Router with Cable Internet Service
How to Hard Reset or 30/30/30 your Router

Stacking a non-Cisco Switch with a Catalyst Express 500 switch

We are using a Cisco Catalyst Express 500 Ethernet switch and need to add another switch to get a few more ports. Is is possible to stack a Catalyst Express 500 Ethernet switch with a non-Cisco Ethernet switch. If so, is there any Cisco documentation telling how to do this?

If by stack, you mean connect the two switches via Ethernet ports, yes you should be able to do that. Depending on the port capabilities of the switches, and whether they have any special uplink ports, you might need to use a different Ethernet connecting cable (cross-over vs. straight thru).

Cisco 2960S FPS-L PoE switch with Avaya 9811g VOIP setup

Hello,
I am connecting a setup for data/voice connecting Catalyst 2960S-FPS-L PoE switch with Avaya 9811g series VOIP phone. As per my knowledge cisco switch works well with Cisco phone as it has got some builtin "Macros" and Intelligent PoE recognition when we connect device getting the details of another device through CDP. I understand I have to create data and voice vlan with QOS then enable trunking on the interface to other switch that is also 2960. Little confuse if is there any compatibility issues with Switch and Avaya phone regarding protocol/data/voice...?
Do I have to do PoE config for each port on the each interface?
any help or detail config will help.
Thanks in advance.

Hi I am back after good research. created two vlan data and voice with trunk on interface1/0/48 given below config..
connection b/w 2960s FPS Switch and Avaya 9611g IP Phone.
lldp/cdp is enable on switch
So I created this config if some one can take a look .
expert advise if something wrong?..
I am only concern with Voice and PoE as voice is my priority. do i have to map something for voice quality?
also if i create another Trunk port one allow voice other allow data both cable will go to switch will that be issue?
interface....
switchport access vlan x
switchport mode access
switchport nonegotiate
switchport voice vlan xx
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface ........
switchport trunk allowed vlan x,x
switchport mode trunk
switchport nonegotiate
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust

3850 switch stack upgrade with minimum downtime

I was wondering if it is possible to do an upgrade of the individual stack members one at a time?
Is it possible to go from one major release to another doing this?
Is it possible to do this going from one minor release to another?
Is it possible to upgrade one stack member at a time within the maintenance release?
Thanks

I was wondering if it is possible to do an upgrade of the individual stack members one at a time?
Ans: Yes you can, but the switch will leave the stack
Is it possible to go from one major release to another doing this?
Is it possible to do this going from one minor release to another?
Is it possible to upgrade one stack member at a time within the maintenance release?
Ans for all above 3: For Stack configuration to work properly, switches must have the exactly same ISO
Recommendation: If they're many switches in stack,
1. upload the IOS file in all the switches
2. change the boot order in running config by:
boot system flash: <new ios fiile name>
boot system flash: <old ios fiile name>
3. take the reload one by one & copy the running config
4. in this case, basically you would be making the new parallel switch stack by adding the reloaded switch with same config but with new IOS image

Half Duplex/100M problem on 2960 switch with GLC-GE-100FX

We have a 2960-24TC switch with GLC-GE-100FX SFP interface converter. We connected the switch to another switch through fiber, one end was GLC-GE-100FX and the other end was a 100/FULL ATI media converter. Both switches could talk to each other. The problem was the GLC-GE-100FX interface running at 100M/half duplex status and we couldn't change the port configuration. Is there a way to fix this problem? Your help would be much appreciated.

Using show interface command. It shows half duplex. It's a new design on Cisco 2960-24TC switches, the Giga uplink ports are dual purposed. When I plugged GLC-GE-100FX SFP interface converter and connected it to a media converter, it showed half duplex. There's no way I could change the speed and duplex under that configuration.

Catalyst 2960-S Stack Interface Packet Drop

Hi all!
I have a 2960-S stack with the following behavior:
SWITCH#sh int g1/0/26
     Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 12275
When I issue the show mls qos interface g1/0/26 statistics:
SWITCH#show mls qos interface g1/0/26 statistics
GigabitEthernet1/0/26 (All statistics are in packets)
dscp: incoming
0 - 4 :    35356866        0            0            0            0
5 - 9 :            0            0            0            2            0
10 - 14 :           0            0            0            0            0
15 - 19 :           0            0            0            0            0
20 - 24 :           0            0            0            0            0
25 - 29 :           0            0            0            0            0
30 - 34 :           0            0            0            0            0
35 - 39 :           0            0            0            0            0
40 - 44 :      634354        0            0            0            0
45 - 49 :           0     49446819      0            0            0
50 - 54 :           0            0            0            0            0
55 - 59 :           0            0            0            0            0
60 - 64 :           0            0            0            0
dscp: outgoing
0 - 4 :     6835883         0            0            0            0
5 - 9 :            0             0            0     43973612      0
10 - 14 :           0            0            0            0            0
15 - 19 :           0            1            0            0            0
20 - 24 :           0            0            0            0       204586
25 - 29 :           0            0            0            0            0
30 - 34 :           0            0            0            0            0
35 - 39 :           0            0            0            0            0
40 - 44 :           2            0            0            0            0
45 - 49 :           0      2215325       0           55            0
50 - 54 :           0            0            0            0            0
55 - 59 :           0        29668         0            0            0
60 - 64 :           0            0            0            0
cos: incoming
0 - 4 :    35374153            2            0            0            0
5 - 7 :    50121685            0            0
cos: outgoing
0 - 4 :    12975602     43973617        85081       204622          122
5 - 7 :    47659950          105     34377016
output queues enqueued:
queue:    threshold1   threshold2   threshold3
queue 0:           0           0    47659935
queue 1:       92482     1222278    34432039
queue 2:           0           0    13178400
queue 3:           0           0    43982889
output queues dropped:
queue:    threshold1   threshold2   threshold3
queue 0:           0           0          71
queue 1:           0        1738           0
queue 2:           0           0          20
queue 3:           0           0      375553
Policer: Inprofile:            0 OutofProfile:            0
I need some help to read this output but it seems that packets are dropped at all queues, isn't it?
Any help please?
Thanks in advance!

Please post the output to the following commands:
1. sh interface G1/0/26; and
2. sh controll e G1/0/26
What kind of client is connected to port Gi1/0/26?

Adding 2960-X to 2960-S Stack

i purchased a new 2960-X switch
i would like to add it to an existing 2 switch 2960-s stack
i understand i need to downgrade the stack speed on the 2960-x with :
switch stack port-speed 10
do the IOS version need to be identical on all switches?
i have:
2960-s = 12.2(55)SE3
2960-x = 15.0(2)EX3
if they do need to be identical, whats the best way to do this?
thanks

Yes, use this command with a .tar file to upgrade all switches in the stack.
Here is an example of using the `archive download-sw` command to upgrade a stack of Cisco Catalyst 2960-S switches. Notice that the number of members in the stack is not relevant to this command. By default all members are upgraded unless the network admin uses the options to do otherwise. The TFTP IP address is 192.168.1.1, and the tar file name is c2960s-universalk9-tar.122.53.SE.tar
Switch# archive download-sw tftp://192.168.1.1/c2960s-universalk9-tar.122.53.SE.tar
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/white_paper_c11-578928.html
HTH

2960-X Stack and LMS

What are the steps to upgrade the IOS on a 2960-X stack using LMS 4.2? Can I use the .bin file or do I need the.tar file? Also, will this upgrade all the stack members or just the stack master?

By my count, you have ~100 devices in that building. I would expect many of the IP phones will have a PC attached. Why is your port count so high? 192 ports or 240 ports per the quotes seems like too many.
Also, you might want to check the 3650 switches. They are basically replacements for the 3750x with newer technology and the same price point.
It doesn't look like 3750 + 2960 makes sense. Why add another bottleneck and layer of troubleshooting if not necessary? Why not just stack the number of switches you need instead of adding a semi-distribution layer? Stacking provides much more throughput than copper uplinks. If you need more throughput to the cores, use 4 X 10G uplink interfaces.

Magic number mismatch: bad mzip file in 3750 stack switch

Hi All can anybody help me in this error msg
"magic number mismatch: bad mzip file"
I am trying to upgrade the switch with"c3750e-ipbasek9-tar.122-55.SE5.tar" in 3750 stack switch it is showing this error msg while booting
thanks in advance

Hi,
The reason you are getting this error message on the switch is a corrupt or wrong IOS image "c3750e-ipbasek9-tar.122-55.SE5.tar".
If the switch is in rommon mode, and you have any other image in the switch, boot it using that image. Once the switch is up, download and copy the correct IOS image once again on the switch and try to upgrade.
If you need help in finding the correct IOS image, give me the exact switch model number, i will help you with that.
But forsure the image is wrong or corrupt and that is why you are getting this error.
Thanks
Ankur
"Please rate the post if found useful"

Using 37xx stack switch can I send snmp messages as syslog ?

In my environment, we are having cisco 37xx stack switches, I want to know is it possible to use the switch config to send snmp traps as syslog messages to the Syslog-server.
In our case, we are using siem which has the ability to process syslog messages from different networking switches. What specific event I'm after is related to bandwidth utilization of the interface. It would have been great if there was existing syslog-event for exceeded bandwidth or increase in bandwidth beyond certain bps rate. The only place such information can be obtained is from snmp, but the siem station doesn't understand snmp, So I hope there are some setting which allows the conversion of snmp traps to syslog msg to be forwarded to destination.
Thanks.

The iPad cannot use your Android phone number at all so it will not in any way be associated with the device or your Apple ID. You will be using your Apple ID email address as your connect address to use Messages. If you want to look at it this way, your iPad/iMessages will be associated with your Apple account/Apple ID, not with the Android phone number.
Where some users get into problems is if they go from an iPhone number to an Android phone number. That is not what you are doing.

2960-X stacking, 5 switches with interwoven 0.5 M cables

Similar Messages

Maybe you are looking for