Maximum number of switches in a LAN

Hello
I have one question about the maximum number of switches (layer 2 only) that we could connect together in a LAN.
I think is 7.
In the case that we want to install more that 7 what are the STP parameters what we must change ?
thank you for your answers.

Hi Mauricio,
The figure that you are talking baout is the diameter of STP i.e 7. Thhis is the number of hops to which STP spans properly and does the STP calculations as expected. After 7 hops you might see unexpected results and it depends. There is no limit of the switches that you can put in you N/W it all dpends upon the N/W, Number of nodes i.e users and requrement. So in case if you are trunking switches to your Core/Distribution switches make sure that you should not cross the 7 hops STP diameter.
HTH,
-amit singh

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Maximum number of switches in a stack?

What is the maximum number of WS-C3750X-48P-S switches I can have in a stack? IOS is 12.2 (55) SE3

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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
As Glen aready noted, the limit is nine for data stacking (StackWise). 3750-X power stacking (Stack Power), between stack members, is limited to 4.
Also note, large 3750 stacks can sometimes be very sluggish doing some CLI commands.
And also note, although StackWise Plus supports "spacial reuse" for unicast traffic, large stacks might congest the ring sooner.
Lastly, for very large stacks, a chassis might be a better and/or less expensive solution.

What is the maximum number of physical link we can bind to a ether-channel and port-channel

Hi,
I was studying about port-channel & ether-channel and found that, it can be bind up-to 8 ports. So maximum number, we can have of 8 ports or more ?
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Thanks

Hi Kathik,
I have gone through one document. It's saying the below mentioned things :
Jun 7, 2012 9:36 PM (in response to Sarabjit)
Re: What is the maximum number of etherchannels we can have?
The maximum number of Etherchannels varies from platform to platform. The maximum number of ports in an etherchannel is either 8 ro 16 depending on the platform. The minimum number of ports in an etherchannel bundle is 1.
Jun 8, 2012 1:27 AM (in response to Sarabjit)
Re: What is the maximum number of etherchannels we can have?
Etherchannels is a Cisco term. Other vendors call them 802.3ad trunks. It's common to see something like this in datasheets:
48 ports 10/100/1000 Mbit/s
802.3ad:
Maximum of 32 groups
Maximum of 8 ports per group
The document url is https://learningnetwork.cisco.com/thread/43680
The another document says the below mentioned things :
Matrix of Load Balancing Methods
This matrix consolidates the load balancing methods that this document describes:
Platform
Address Used in XOR
Source-Based?
Destination-Based?
Source-Destination-Based?
Load Balancing Method—Configurable/Fixed?
6500/6000
Layer 2, Layer 3 addresses, Layer 4 information, or MPLS information2
Yes
Yes
Yes
Configurable
5500/5000
Layer 2 address only
Yes
Cannot change the method
4500/4000
Layer 2, Layer 3 addresses, or Layer 4 information
Yes
Yes
Yes
Configurable
2900XL/3500XL
Layer 2 address only
Yes
Yes
Configurable
3750/3560
Layer 2 or Layer 3 address only
Yes
Yes
Yes
Configurable
2950/2955/3550
Layer 2 address only1
Yes
Yes
—1
Configurable
1900/2820
These platforms use a special method of load balancing. See theCatalyst 1900/2820 section for details.
8500
Layer 3 address only
Yes
Cannot change the method
1 For the 3550 series switch, when source-MAC address forwarding is used, load distribution based on the source and destination IP address is also enabled for routed IP traffic. All routed IP traffic chooses a port based on the source and destination IP address.
2 For the 6500 series switches that run Cisco IOS, MPLS layer 2 information can also be used for load balancing MPLS packets.
The document url is http://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/12023-4.html
Another document says the below mentioned things for load-balancing :
inally, here is full list of valid load-distribution methods:
•dst-ip—Load distribution on the destination IP address
•dst-mac—Load distribution on the destination MAC address
•dst-port—Load distribution on the destination TCP/UDP port
•src-dst-ip—Load distribution on the source XOR destination IP address
•src-dst-mac—Load distribution on the source XOR destination MAC address
•src-dst-port—Load distribution on the source XOR destination TCP/UDP port
•src-ip—Load distribution on the source IP address
•src-mac—Load distribution on the source MAC address
•src-port—Load distribution on the source port
The document url is https://learningnetwork.cisco.com/thread/63064
Please suggest.

Maximum number of columns in a table or view is 1000

Post Author: TinaReifer
CA Forum: Formula
I am trying to create a direct link from Tririga / Oracle database into Crystal XI. The data I am attempting to pull is from the RETransaction (Escalations). The error I keep receiving is shown below. Has anyone run across this problem and found a solution that can be shared?
Very Appreciative for any feedback.
Tina Reifer
"Failed to retrieve data from the database.
Details: HY000:[Oracle][ODBC][Ora]ORA-01792: maximum number of columns in a table or view is 1000
[Database Vendor Code: 1792]"

Post Author: synapsevampire
CA Forum: Formula
Try posting your software, its version, and the type of connectivity you're using for oracle.
Older versions of Crystal used a proprietary Oracle ODBC driver that came with Crystal, but you should SWITCH away from using ODBC anyway, not sure why you elected to use it, it's slower and more problematic.
You'll see Oracle Server listed as a data source, that is generally the best connectivity to use.
Also, what version of Oracle is it, and what Oracle client are you using?
You might need your Oracle dbas assistance here.
Anyway, the error is not a Crystal error, it's being raised by the ODBC driver, and Oracle used to have a maximum of 1024 colums I think it was...been a while...
-k

Java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded?

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java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded
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Question:
- What is the cause of this error message? How to avoid?
- I intended to deploy my application to 9IAS server. Will the same problem occurs too?
Thanks for your reply!

Hi Pig,
When i run my web-application with the embedded OC4J server, the following error message is prompted:
java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded
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     void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
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     void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
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Question:
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From the Oracle error message documentation:
ORA-00020 maximum number of processes (string) exceeded
Cause: All process state objects are in use.
Action: Increase the value of the PROCESSES initialization parameter.
Another alternative approach may be to configure your Connection pool and/or your ApplicationModule pool to optimize the use of
database connections and/or restrict the number of database connections used by the application. For example, if your application
has declared many root ApplicationModules (i.e. more than one ApplicationModule pool is in use) then it may help to enable the
jbo.doconnectionpooling switch so that each ApplicationModule instance in the pools does not maintain a dedicated database
connection while not in use. Another alternative if you are using the BC4J connection pool (not a JDBC datasource) may be to
restrict the number of connections the pool can create to < 150 with the jbo.maxpoolsize switch. However, please note that this
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- I intended to deploy my application to 9IAS server. Will the same problem occurs too?.
This is a database issue. So, yes.
Hope this helps.
JR

Nokia N8-00 'maximum number of connections in use'

Hi,
I have creted another APN in the Destinations-Internet settings. Put this APN on priority 1. Then I se internet an it is ok. But when I open Nokia Maps or another App. Sometimes it tries to connect to the old APN then says 'maximum number of connections in use'. Asking me for confirmation to close one connection.
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Any help is appreciated.

So the on off method I posted earlier did not work. The first APN is still tring to be accessed by some apps after the phone is switched off and on again. The other things I tried..
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The only thing I could do is configure the first APN name with the actual Access Point of the second APN. This worked All apps are accessing the first APN whaich was reconfigured to look like the new Second APN.
This is not a solution again it is a workaround. Does anyone-else have this problem. Or am I the only one who is configuring multiple APNs. Since my provider has multiple APNs.
I would have thought that this phone supports Multiple PDP contexts, or Secondary PDP context. It was defined in the initial 3GPP specs way back in 2003ish. Nokia can you confirm???
Cheers Peps!

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Hi,
would appreciate if anyone can advise what is the maximum number of vlans as well as HSRP can be created? Is it the same for all layer 2 and 3 switches?
Thanks
Christina

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Maximum Number of Simultaneous Accounts?

Is there a maximum number of accounts I can have running at the same time? I have fast user switching turned on and would like to run up to 10 accounts at a time.

Daniel,
I don't see why not, but then I also don't see what possible reason you would have for doing this. Keep in mind that your MBP may become very sluggish with this many accounts active at one time, especially if you do not have your RAM maxed out.
Scott

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What is the maximum number of Cat 3560 switches that can be connected together. Using all Fiber ports the max number would be 5, does this series of switch have a design limitation on how many can be connected together?

you could theoretically connect a switch to every port of the 3560.
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do you mean how many max daisy-chained one after the other??

Maximum number of interfaces in Port Channel on Nexus 5596

Let me preface this by saying I am not a network expert....
I noticed that our customer had configured a port channel on their Nexus 5596 comprised of 16 interfaces. I thought the maximum number of interfaces in a port channel was 8 interfaces? I see in the Nexus 7000 documentation that if you configure 16 interfaces, the remaining 8 will be in "hot standby." Is this the same behavior on the Nexus 5000 series?
Thank you.

Same behavior on the 5500 series and other Cisco switches like 3750, 3850 , etc..
HTH

Maximum number of buttons (HELP)

i have a project where i need 24 buttons. i have a project with 24 subtitles and on the main menu, i want to put all the languages so a viewer can select their language and then watch their subtitled version. the maximum number of buttons allowed on a 16:9 project is 18. does anyone have any solutions??

LOL!
I was a teacher once... and not been called smart since I threw away my suit to go to work in...
It's as Eric said - you are creating an illusion using two menus that are identical. Menu 1 has 18 buttons that work, but has a background image that appears to show 24 buttons. The 18th button is invisible and auto-activates to menu 2, where you land on a button that is labelled as button 18. This menu has a background image that has the graphics for buttons 1-17 but no actual buttons in those positions.
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BoV uses an image set into a track and an overlay file, but then you create buttons using the subtitle stream. In essence you create a track, add the graphic for the background. You make sure the start marker is set to be a button highlight marker and then add a subtitle. With the subtitle active you can add button rectangles just as if you were in a menu and if you add the overlay file you can add all kinds of highlight shapes. Navigation and colours work the same as for menus, but remember a subtitle can only really have four colours - you'll perhaps need to compromise somewhere along the way in terms of how this all looks.
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SG300 Cannot enable IPv6 on the interface - the maximum number of interfaces 3 has already been used.

The Sg300 is currently in L3 mode
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No where in the device specifications or in the documentation did I ever see this limitation when I purchased the switch!

That message it means that you will not be able to create another iCloud account on your device as the maximum number have already been created. Your only options are to either re-use one of the accounts previously created, or create your new account using on a different iOS device or Mac, if you have one.

Maximum number of fabric logins

Hi there
I need to provide documented references for a large SAN, and have a few queries.
I have the show tech-supports for an edge-core-edge SAN consisting of 2 redundant fabrics.
There are 4 host edges, 1 core, 4 storage edges per fabric. All are MDS 9500 series directors, running SAN-OS 3.2.2a.
In the Large SAN Design Best Practices whitepaper
(http://www.cisco.com/en/US/prod/collateral/ps4159/ps6409/ps5990/white_paper_C11-515630.pdf)
there is a reference to the maximum number of fabric logins.
"The Cisco MDS Family supports up to 10,000 fabric logins in a physical fabric, regardless of the number of VSANs in the network."
1) Is this specifically refering to the number of f_ports?
2) If not, what is the 10,000 referring to?
In the Cisco MDS NX-OS Release 5.0 Configuration Limits
(http://www.cisco.com/en/US/docs/switches/datacenter/mds9000/sw/5_0/configuration/guides/limits/limits_50.html)
there is a mention of 10000 FCNS entries per fabric.
This is the only reference I can find that correlates the two limits.
The Configuration Limits for Cisco MDS SAN-OS Release 3.x
(http://www.cisco.com/en/US/products/ps5989/prod_troubleshooting_guide_chapter09186a0080679fd4.html)
makes no mention of FCNS or fabric login limits.
3) Is the reference to 10000 FCNS entries (in the NX-OS 5 limits) also the number of fabric logins?
In the show tech-support, there is a command
`show tech-support fcns`
`show fcns database vsan 1-4093`
VSAN 431:
FCID        TYPE PWWN                    (VENDOR)        FC4-TYPE:FEATURE
0x050002    N     50:06:04:8c:52:a6:c0:69 (EMC)           scsi-fcp 253
0x050003    N     50:06:04:84:52:a6:c0:49 (EMC)           scsi-fcp:both 253
0x050004    N     50:06:04:8c:52:a6:c0:49 (EMC)           scsi-fcp 25
<.. output abbreviated for brevity>>
Total number of entries = 1066
4) Does this mean that there are 1066 fabric logins?
When I look further in to it, and see the command
`show fcns database detail vsan 1-4093`
VSAN:431   FCID:0x0500b1
port-wwn (vendor)           :10:00:00:00:c9:72:4d:9c (Emulex)
                             [nus157_hba0_0]
node-wwn                    :20:00:00:00:c9:72:4d:9c
class                       :3
node-ip-addr                :0.0.0.0
ipa                         :ff ff ff ff ff ff ff ff
fc4-types:fc4_features      :ipfc scsi-fcp
symbolic-port-name          :
symbolic-node-name          :Emulex LPe11002-S FV2.82a4 DV2.50o
port-type                   :N
port-ip-addr                :0.0.0.0
fabric-port-wwn             :21:07:00:0d:ec:3a:44:c0
hard-addr                   :0x000000
permanent-port-wwn (vendor) :10:00:00:00:c9:72:4d:9c (Emulex)
It shows that most of the entries have the port-type: N.
5) Does this mean they are N_ports, not F_ports?
I would really appreaciate answers to these questions.

John,
Cisco NXOS Configuration Limits (reference/background link)
1) Is this specifically refering to the number of f_ports?
   Answer: Yes, the 10k logins in the Design Guide Whitepaper refer to the number of Fabric logins, not the number of physical ports. This is because you could have a single F_Port that has multiple logins as part of it. For example, an Nexus 5000 in NPV mode could connect to a MDS 9513 via one F_port (NP_Port on the Nexus 5k), but have many Fabric Logins (technically, one FLOGI and multiple FDISC).
2) If not, what is the 10,000 referring to?
     Answer: Number of devices logged into the Fabric not the number of ports in the fabric.
3) Is the reference to 10000 FCNS entries (in the NX-OS 5 limits) also the number of fabric logins?
     Answer: Yes, since every device out there that FLOGIs into the fabric registers with the nameserver.
4) In the below output does this mean that there are 1066 fabric logins?
In the show tech-support, there is a command
`show tech-support fcns`
`show fcns database vsan 1-4093`
VSAN 431:
FCID        TYPE PWWN                    (VENDOR)        FC4-TYPE:FEATURE
0x050002    N     50:06:04:8c:52:a6:c0:69 (EMC)           scsi-fcp 253
0x050003    N     50:06:04:84:52:a6:c0:49 (EMC)           scsi-fcp:both 253
0x050004    N     50:06:04:8c:52:a6:c0:49 (EMC)           scsi-fcp 25
<.. output abbreviated for brevity>>
Total number of entries = 1066
Answer: Yes.
5) Does this mean they are N_ports, not F_ports?
When I look further in to it, and see the command
`show fcns database detail vsan 1-4093`
VSAN:431   FCID:0x0500b1
port-wwn (vendor)           :10:00:00:00:c9:72:4d:9c (Emulex)
                             [nus157_hba0_0]
node-wwn                    :20:00:00:00:c9:72:4d:9c
class                       :3
node-ip-addr                :0.0.0.0
ipa                         :ff ff ff ff ff ff ff ff
fc4-types:fc4_features      :ipfc scsi-fcp
symbolic-port-name          :
symbolic-node-name          :Emulex LPe11002-S FV2.82a4 DV2.50o
port-type                   :N
port-ip-addr                :0.0.0.0
fabric-port-wwn             :21:07:00:0d:ec:3a:44:c0
hard-addr                   :0x000000
permanent-port-wwn (vendor) :10:00:00:00:c9:72:4d:9c (Emulex)
It shows that most of the entries have the port-type: N.
Answer: An N_Port is an end device like a storage port or an HBA, which connects to an F_Port (Fabric Port) which is the corresponding port on the switch. This is why you see it as an port-type of N, rather than NL (Node Loop) F, E, or FL (Fabric Loop), as only N or NL can represent the end device itself and not the port on the switch.
Hope this helps,
Seth

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can be much higher than the 'General Wisdom' at Adobe.
Oh yeah, I almost forgot. I've seen the new setting for
simultaneous requests take effect with out having to restart CFMX.
Cheers,

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Hi,
after implementation SP SAPKH60409 we have problem with ALV reports FBL1N (3,5).
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Maximum number of columns 90 exceeded ( Message no. 0K114). It is not true because the layout has less columns.
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regards

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Maximum number of switches in a LAN

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