Cisco WAN :: C3560 / Eigrp Convergence And IOS Relationship?

Jan 3, 2011

1.Cisco IOS Software, C3560 Software (C3560-IPSERVICES-M), Version 12.2(25)SEE2, RELEASE SOFTWARE (fc1)   This switch EIGRP coverge is slow.
2.Cisco IOS Software, C3560 Software (C3560-IPSERVICES-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)      This switch EIGRP coverge is fast
  
The IOS have effect of the EIGRP coverge ? From which version IOS began ?

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Cisco Switching/Routing :: WS-C3560-24PS / WS-C3560-48PS - Port With WAP Goes To Err-disable?

Oct 11, 2012

We have a Cisco switch in each office and every now and then the port that has the D-Link Wireless AP (DAP-1522) connected to it goes to err-disable state. Actually sometimes even a regular port that has a cisco phone connected may also go to err-disable state (less often). So I have to telnet into the switch and issue shut and no shut command on that interface to get it back to life, then it works for a few days or weeks until it happens again. Any suitable configuraiton for that interface, that would prevent that from happening or a workaround ?
 
Here's the info:
 
Model: cisco WS-C3560-24PS and cisco WS-C3560-48PS
Image:c3560-ipbase-mz.122-35.SE5.bin
 
This is the log from one switch:

31w5d: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/2, putting Fa0/2 in err-disable state
31w5d: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 74e2.f592.f7f2 on port FastEthernet0/2.
31w5d: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed  state to down
 
And from another, which is almost the same:

5d10h: %PM-4-ERR_DISABLE: psecure-violation error detected on Fa0/3, putting Fa0/3 in err-disable state
5d10h: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address d8a2.5e31.2cf6 on port FastEthernet0/3.
5d10h: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down
5d10h: %LINK-3-UPDOWN: Interface FastEthernet0/3, changed state to down
 
Here's the configuration of fe interfaces (they are all alike):

interface FastEthernet0/2
description Voice & Data Combo Port
switchport access vlan 11
switchport mode access
switchport voice vlan 15

[code]....

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Relationship Between Link Length And Data Rate?

Aug 5, 2011

I have something I assumed but I am not sure if this wrong or not. I assume that every say 1 meter, I can send say 1 bits, so if I have 10 meters of link length, I can send 10 bits of data on that link. Do you have any argument to strongly support this assumption, preferrably a reference.

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Trust Relationship Between Workstation And Primary Domain Failed

Aug 10, 2011

I have a computer connected to a domain trying to login and I got this error message "the trust relationship between this workstation and the primary domain failed"

Then I tried to login as local Administrator and after trying a few passswords get this error. Your account has been disabled.. please see your system administrator

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Trust Relationship Failure Windows 7 To Server 2003 Domain

Jul 30, 2012

When attempting to log in to a computer (running Windows 7 Professional) here at the office using the network administrator account, I get the error message: "The trust relationship between this workstation and the primary domain failed." I wasn't here when this laptop was set up, and so I don't know if any local user accounts were made or what their passwords would be if they were there, so I can't think of any way to log in to the machine and disconnect/reconnect to the domain which is really my only idea on how to fix it. Finding out what would cause this to suddenly start happening would also be nice, but mostly I just need to figure out how to get reconnected so I can get this back up and running.

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DELL GX280 - Relationship Between CPU Usage / USB Hard Drive And Network Card

Jun 19, 2013

I have an old computer (Dell gx280) that has a external usb 2.0 hard drive connected to it. I was trying to copy the files over a gigabit network connection to another computer and it was only transferring at approx. 2.5 megabytes a second. This was only using a small fraction of the gigabit network card in both the source and destination computer. I saw the CPU was maxed out on the source PC b/c of an application. Once I quit that application the CPU usage went back to essentially nothing. The copy job then jumped up to 14 megabytes a second and was using 30-35% of the gigabit connection.

The NIC and the USB ports are on the motherboard. How did the CPU usage slow this whole process down and was it impacting the network card, the USB port or both?

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Cisco WAN :: Slow BGP Convergence With Catalyst 6500 Quad

Nov 28, 2012

I set up Catalyst6500 Quad-SUP VSS system.I have a problem with slow BGP convergence(80sec) on VSS switchover.Each chassis has a bgp peer and "bgp graceful-restart" is disabled.I investigated BGP behavior with "debug ip bgp events" and "debug ip bgp update".I found that BGP process waited a peer to reply until timeout and after the timeout BGP table was calculated.I guess this timer makes the convergence slow.How can I adjust this timer value ?

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How To Calculate Network Convergence Time In OSPF

Feb 2, 2012

I want to measure the the ospf convergence time on the given network topology (assume 5 nodes - partial mesh topology).I am using quagga software as routing software on linux box. Quagga is runnign fine and network is converged, able to see all the routes.. Quagga software is logging all the osfp information includign packets,state machines,etc.I am going to disconnect a link between node a to node b. and i want to measure the convergence time of the network.What is the network convergence time?My answer is, The time taken to reflect the topology change (link down/up, network condition change) to all the routers on the topology.Some routers(close by routers to the topology change) will get converged fast, and some routers(far away from the topology change) will have the higher convergence time. we have to take the highest convergence time of the router on the topology and we can says thats the ospf network convergence time.

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Cisco Switching/Routing :: 7609 Slow RSTP Convergence

Nov 22, 2011

I have a 7609 with two LAG groups (Etherchannel not LACP) going to two separate devices that DO NOT participate in spanning-tree (Occam gear if you must know). I'm running 802.1w across the LAG groups but the convergence time is terrible! In essence, the 7609 is running spanning tree against itself (between the two blades). What can I do to fix my configuration?
 
If I disable the ports on the equipment connected to g1/17 & g1/18, it takes ~30 seconds for spanning tree to start forwarding on g2/17 & g2/18.When I bring the ports back up on the other side of g1/17 & g1/18 which are in a lag group, g2/17 & g2/18  immediately go into block mode while g1/17 & g1/18 start learning for another ~30 seconds!! [code]

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Cisco Switching/Routing :: Catalyst 3750X Stacking Convergence Time?

Nov 14, 2011

convergence time in case of stack master will be switched over to other switch.In my understating, when the stack master will be switched over to other switch based on election algorithm, convergence time will be less than 10 second.
 
I tried to calculate concersion time during fail over testing but convergence time was 21 second. I think it is too long...

Expected reasons

・I configured Rapid Spanning tree protocol between L3 and L3. (But RSTP's convergence time is 2~3 second..)

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Cisco Switching/Routing :: 4948 - RSTP Poor Convergence Time 30 Seconds

Dec 26, 2011

What's wrong with my config? If I shutdown a port or pull a link it takes ~30 seconds to converge.
 
I have set spanning-tree portfast default on the 4948's. Is it proper to set my uplinks on these switches (g1/1) to shared or does that disable RSTP?
 
Switch 1 & 2 are 4948's running 12.2(54)
Switch 1 & 2 are connected on port 43
 
Switch 1 port 1 is connected to the 7609 12.2(33) SRD5 on port g1/2 Switch 2 port 1 is connected to the 7609 on port g2/2
 
I have a host on Switch 1 port 42 for testing.

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Cisco Switching/Routing :: 4500 - Configure Spanning-tree And Faster Convergence On Network To Avoid Loop?

Oct 22, 2011

Recently we got a cisco catalyst 4500 and six 2960 access switches. I need assistance on configure spanning-tree and faster convergence on my network to avoid loop.
 
[code]....

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Cisco WAN :: C3560 Cannot Login Privileged Mode

Oct 2, 2011

Cisco cannot login? Currently i cannot login to the two of my cisco 3560 with the password that i usually used to login. and it is strength to me that its Configuration register is 0xF.

[BEGIN] 10/4/2011 10:22:57 AMshoTC-NGN-C3560-1>show verTC-NGN-C3560-1>show version Cisco IOS Software, C3560 Software (C3560-IPSERVICES-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)Copyright (c) 1986-2007 by Cisco Systems, Inc.Compiled Thu 19-Jul-07 18:15 by nachenImage text-base: 0x00003000, data-base: 0x01300000
ROM: Bootstrap program is C3560 boot loaderBOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(25r)SEC, RELEASE SOFTWARE (fc4)
TC-NGN-C3560-1 uptime is 50 weeks, 6 days, 9 hours, 34 minutesSystem returned to ROM by power-onSystem image file is "flash:c3560-ipservices-mz.122-35.SE5/c3560-ipservices-mz.122-35.SE5.bin"

[code]....

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Cisco WAN :: C3560 Switch Is Not Allowing Telnet Or SSH

Oct 8, 2012

I have got my ccna voice lab configured and is up and running, my switch is configured with 2 differents Vlans (Data & Voice) and the fa 0/1 is configured as trunk port connecting to the CME router.  I can telnet or ssh to all the devices on the network but only the switch in not accepting the request the only message I am getting is "request timeout".

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Cisco Switching/Routing :: WS-C3560-8PC - MGT Vlan Goes Down

Oct 24, 2012

I have a 3560-8PC in which the mgt vlan randomly (twice in one day or 2 weeks later) goes into the down state and will return w/o any interventaion 15-20 minutes later. Int G0/1 is the uplink to a 3750. I dont think its a layer1 issue at this time since i have seen it work just fine for over 2 weeks and drop again. I don't see any errors on the 3750 either.
 
WS-C3560-8PC       15.0(2)SE             C3560-IPBASEK9-M
 LOG:
----------------------------------------
.Oct 20 19:34:37.533 EDT: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changeds tate to up

[Code].....

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Cisco WAN :: C3560 Support Flexible NetFlow?

Jan 28, 2013

I was working with Opmanager software to monitor my network, and i downloaded the Netflow plugin, i tried to enable the netflow on my core switch c3560 but I was surprised that it does not support the NetFlow, after many resersh most of URL's say it does not support until i found another URL from Cisco Says that it support Flexble netflow now, but i think we should update the IOS.
 
[URL]

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Cisco WAN :: C3560 System MTU OSPF And BGP Adjacency

Feb 7, 2011

I have some c3560 with system MTU set 1546 with interface VLAN10 whose MTU size is 1546 and there is no possibility to change it to another value. and we have  some cisco 2600 where I can't set MTU bigger as 1500. I have a problem in establishing the OSPF adjacency between cisco 2600 abd 3560 , the command "ip ospf mtu-ignore" is set on both side but it doesn't work - the OSPF packets which are sent by c3560 are simply lager as 1500 bytes and are dropped by cisco2600.
 
the problem is that sometimes c7200 losses their BGP session, I would say in most cases it happens between NPE400 and NPE-G1/G2 whit error message like "session closed by a peer x.x.x.x" after some seconds BGP session goes again UP , and then after some minutes again DOWN .

it can be  MTU problem, as the traffic passes those c35660 with MTU1500. The neighbour status showes that "transport tcp  path-mtu-discovery" is enabled an all neighbours but it seems doesn't work. if I disable the path-mtu-discovery on the neighbours - the BGP session between them stays stable.

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Cisco WAN :: C3560 / C2948 - Configuration Of EtherChannel

Jan 12, 2013

On my study lab I have got 2 switches a c3560 running IOS and a c2948g-ge-tx running CatOS. Both switches has SFP ports, I would like to configure ether channel between them switches using 2 SFP ports on each switch.

My question is if such configuration is possible and how to configure ether channel so that VLANS can travel between both switches running different operating system. I have tried but it's no working,

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Cisco Switching/Routing :: C3560 SW IOS Upgrade?

Nov 23, 2012

I have C3560 switches in my work environment. I want configure ssh on that switch but the IOS what they have 'c3560e-universal-mz.122-58.SE2' not support. As per advised I was triying to upgrade 'c3560e-universalk9-mz.122-58.SE2" for all my access switches.
 
I successfully upgraded for two switches.
 
I have two problems now
 
01. I upgraded the IOS successfully one Switch but the Poe is not working. What is the reason ?
 
02. After upgrade the IOS, the out put is as follows
 
Switch   Ports  Model              SW Version              SW Image
------   -----  -----              ----------              ----------
*    1   30     WS-C3560E-24PD     12.2(35)SE5             C3560E-UNIVERSAL-M
Cisco#sh boot sys

[Code].....

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Cisco :: Command Sw Mode Trunk On C3560 Was Rejected?

Apr 16, 2012

recently i do some lab about trunking protocol using Layer 3 switch C3560 and layer 2 switch C2960, but i face a problem that i cannot configure trunk port on my C3560 using "switchport mode trunk" command, and after looking for the answer from google i found that i have to "remove" the "auto" mode of C3560 using "switchport mode dynamic desirable" and after that we can enter the "switcport mode trunk" command successfully.

and my question are, whether the "auto" trunk mode in switch layer 3 is a default mode or not? and why i should enter "sw mode dynamic desirable" command before "sw mo trunk" command ?

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Cisco Switching/Routing :: Does C3560-12PC-S Run OSPF

Nov 21, 2012

I am in a doubt if the 3560-12-PC-S supports OSPF. Datasheet says we need IP Services image. But 3560-12PC doesn’t have the option with IP Services. Then I havigate to [URL] how?
 
So, any clues whether or not this box can run OSPF?

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Cisco Infrastructure :: C3560 - Unable To Login Through Hostname

Jul 4, 2012

I am unable to login to switch c3560 through Hostname but able to login through IP address. when i am putting the command : login authentication telnetpwd
 
getting the below message:
 
AAA: Warning authentication list "telnetpwd" is not defined for LOGIN.

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Cisco WAN :: WS-C3560-48TS / Is GRE Supported On 3560 Switch And IOS

Feb 14, 2012

I have below switch and I was interested in configuring GRE on one of the interface. So I tried to create tunnel interface, the tab completes the command. Is GRE supported on this switch and IOS? 
 
Switch#show version
Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
......
cisco WS-C3560-48TS (PowerPC405) processor (revision G0) with 122880K/8184K bytes of memory.
 Switch(config)#interface tunnel 0
^% Invalid input detected at '^' marker.
 Switch(config)#
  
IP routing is also enabled.

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Cisco Infrastructure :: C3560 Port Shutdown Shut Up

Jul 13, 2011

Is it possible to reduce de recoveery time after an interface shutdown? Current interface configuration is as follows and it takes 1 second to recover from a shutdown. I need to decrease this time.(Cisco Catalyst C3560) [code]

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Cisco :: C3560 / C3750 - Prime 1.3 Configuration Archives?

Apr 7, 2013

Prime 1.3 (POC testing), for testing purposes I discovered a class C range (255.255.255.0) containing a bit of everything (AP 1240, C3560 & C3750).When looking in the config archive only the AP's have configs stored, the others failed, snmp & telnet credentials are the same for the whole range, what could I do wrong ?

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Cisco Switching/Routing :: C3560 / Unexpected Behavior With SSH?

Feb 5, 2012

I have a weird situation with some switches.
 
Switch .55 can ssh into Switch .57 but cannot ssh into Switch .56.
Switch 56 can ssh into Switch 55 and ssh into Switch 57
Switch 57 can ssh into Switch 55 and ssh into Switch 56
 
The software on .56 is:
 
C3560 Software (C3560-IPBASEK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
 
I noticed on .56, when I do a show ip ssh I get: SSH Enabled - version 1.5. It doesn't say version 1.99 like the others even when I configure version 2. Is this a bug I am running  into?

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Cisco Infrastructure :: C3560 Licenses To Upgrade From IOS 12.X To 15.0.x To Maintain Functionality

Jun 27, 2012

I am upgrading the network equipment at my place of employment. We use Cisco C3560, 2960, 4506 and I was noticing that IOS 15.0.x is available. After doing some reading it appears that Cisco is going to a pay for the licensing functionality that you want. Do I need to purchase licenses to upgrade from IOS 12.X to 15.0.x to maintain functionality?

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Cisco Switching/Routing :: C3560 / How To Configure SLA Monitoring On L3 Switches

Feb 27, 2013

how to configure SLA monitorin for Dual Path default route in Layer 3 switches, like C3560?

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Cisco Switching/Routing :: C3560 / Can't Disable Telnet For Vty Lines

Oct 24, 2012

#sh run | inc user
!
username USER0 secret 5 $1$passwordusername USER1 privilege 15 secret 5 $1$passwordusername USER2 privilege 15 secret 5 $1$password
!
#sh run | inc aaa
!
aaa new-modelaaa authentication login local_authen localaaa authentication login radius_authen group radius localaaa authorization consoleaaa authorization exec local_author localaaa authorization exec radius_author group radius localaaa session-id common
!
#sh run | begin line vty
!
line vty 0 4access-class 3 inexec-timeout 15 0authorization exec radius_authorlogging synchronouslogin authentication radius_authentransport input sshline vty 5 15!sh verCisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(55)SE6, RELEASE SOFTWARE (fc1)
 
the intent of the above is that management connections will only be accepted via SSH, and all of those will be authenticated via RADIUS, unless it's down, then it will use the local username/pw combinations, most of which are given Privledge level 15. Telnet should never work.SSH works as expected (authenticates via RADIUS), but the problem is that Telnet also works, will ONLY use the local database (never RADIUS), and, for some reason, leaves the users at Privledge level 1, instead of the configured 15.Essentially, it seems that at every point I have told it to do something that isn't the default with regards to telnet, it ignores me.Prior to a recent IOS upgrade, the switch didn't support SSH, so the previous config was Telnet with RADIUS, and that worked fine.

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Cisco Switching/Routing :: C3560 Swap Out Not Ping Across Network

Jun 17, 2012

Had a switch die over the weekend, a c3560, per our normal procedure I pulled the hardware put a very basic config on it(vlans, portchannel, uplink ports, ip of management vlan, con and vty security, snmp, enable secret, and hostname).  Then I use solarwinds orion to upload a copy of the old config to bring the switch back to the same state as the one that failed.  Its a system that has worked for us 3 or 4 times in the past.  But this time when the base config was on the box it couldnt ping across the network.I have tried clearing the arp cache and the dynamic mac tables, i verified the routing tables and even removed the 10.1.185.128/27 route and re-added it, saw the routing update go across to the other 65k, tried bouncing the edge switch(i cant bounce the 65k's), took down the po between the edge and 65k.

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Cisco :: WS-C3560-48TS Network Assistant / Unable To Add A Switch

Oct 21, 2012

I have a network running some 20 switches, two controllers and many AP's.  All the devices that should be able to connect to cisco network assistant can successfully.  However there is one switch that will show in neighbours but will give the message of “unable to connect to device” when I try and add it to the topology. 
 
As far as I can see the config is identically to all other similar switches in the network.  I can telnet from a switch (management VLAN) to the switch in question.  However when I try to ping or telnet from the PC running network assistant (different subnet) I am unsuccessful.  However I can ping/telnet to all other cisco device from this PC. The switch is a WS-C3560-48TS and I have included the config for firstly the switch in question and another switch of the same model and config that works correctly. 
 
sho run
Building configuration... 
Current configuration : 7363 bytes
!
version 12.2
no service pad
service timestamps debug datetime localtime

[code]......

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Cisco Switching/Routing :: C3560 100mb Fiber Module?

Sep 4, 2012

I have a c3560 switch that has two gig fiber modules in it.  I need to uplink fiber to one of these at 100mb.  This is because this port will be rate limited to 20mb and 10 percent is the lowest you can go with the rate limiting command.  Is there a 100mb fiber module i can insert in the 3560

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Cisco Switching/Routing :: C3560 Output Drop Without MLS QoS Enabled

Nov 24, 2012

We are seeing output drops on a C3560 switchport, this port does not have QoS enabled -- application does not need special qos treatment, as long as packets are not droppd, so I suppose all traffic will share the same queue? then how should I read the output of "show platform port-asic stats drop" which indicates that it is queue 3 weight 2 drop? I am wondering what is the best way to fix this? enable mls QoS and increase queue 3 bandwidth share on this interface or just increase the output queue depth?
 
switch#sh mls qos interface gi0/1
GigabitEthernet0/1
QoS is disabled. When QoS is enabled, following settings will be applied
trust state: not trusted

[Code]......

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