ws-c2960-24tt-L Ethernet switch adding or removing any device from switch cause a loss of connection to all other devices on switch for about 60sec.
View 1 RepliesAfter not seeming to be able to save any configurations in 12.2(25)FX, I thought an upgrade would work since it said it didn't recognize my browser or OS but let me continue. I was able to see everything just couldn't save changes.
I updated to 15.0(1)SE3 and everything seemed to be going well. Tried to log back in HTTP (have not set n IP yet since it is still at my house... DHCP seems to be working) and I get a user/password screen that says level_15_access and it won't let me in.
Attempts to log in terminal have been unsuccessful. I can log in my dell switch which I am replacing and my APC units terminal just fine using USB to serial and Ubuntu.
I tried cisco as a password, user and password, admin, administrator no luck.
What is the best way to resolve this, is there a sure fire windows serial program or settings I should use in linux (currently 9600,8,N,1) to connect? I have looked through manuals till I am blue in the face.
I am a bit confused by the output of 'show run' and 'show run switch-profile' that pertains to a port-channel interface configured in a switch-profile. My main gaol is to find out how can I add/remove the allowed vlans the port-channel (configured as trunk) carries. The setup is like this. I have 2 N5k in vPC domain and Etherner1/11 on both switches is configured as trunk vPC that connects to a core switch. When I issue ‘show run’ for the port-channel and physical interface I get the following output. [code] From above it seems the switch-profile configuration is missing the 'switchport trunk allowed vlan' in the port-channel interface. If want I to remove vlan 30 from the allowed vlan, should I go under the switch-profile mode and remove vlan 30 from the allowed list even though the switch-profile configuration seems to be missing this.
View 2 Replies View RelatedI am trying to configure 802.1x RADIUS Authentication on cisco 2950-24TT-L Switch. I am using following set of command as given below
Switch# configure t
Switch(config)# aaa new-model
Switch(config)# aaa authentication dotx default group redius
Switch(config)# dot1x system-auth-control
Switch(config)# inter fasteth 0/1
Switch(config)#dot1x port-control atuo
I am facing problem dot1x command is not working on interface.
does the WS-C2960-24TT-L switch support power over Ethernet ?
View 2 Replies View RelatedWe have a stack of 3 cisco swithes 3750s WS-C3750G-24TS 12.2(25)SEB4 .We plan to recover a switch from the stack as it is not needed any more The switch we plan to recover is the existing Master.If we change the priority (switch 1 priority) and make another switch the master using command line will we have any loss of connectivity to the servers conecting to the stack ?
View 1 Replies View RelatedI have 2 x 3750's in a stack, switch 2 is the master. We only have 5 hosts in each switch so we decided to move all hosts into switch to and removed switch 1 as we need it elsewhere. Anyway all worked fine, but I wanted to tidy the config up as it was still provisioned so I removed the provisioning for switch 1 and the config was now showing ports 2/0/1 to 2/0/24, I then wanted to renumber switch 2 in the stack to 1 and saved the config to NVRAM and reloaded and then disaster the switch reloaded with it provisioned with 2 switches. Switch 1 was now the main switch with no config on ports 1/0/1 to 1/0/24, but the correct config was still on 2/0/1 to 2/0/24 so I just copied those ports over switch 1's ports and then removed the second switch and all was good, but I did this all wrong, what is the best way to un-provision a switch from a stack and change the master?
The more I think about it when the switch 1 member was removed should I of copied the port config from the switch 2 (master) first and overlaid it on ports 1/0/1 to 1/0/24, renumber then master form 2 to 1 then rebooted, then removed the 2 switch from the provision?
We have a live stack with 4 Cat 3750 switches of mixed varieties. Switch 1 crashed the other day and didn't come back up. A power reset brought the switch online again, and switch 2 is now running as the stack master. We are going to replace switch 1 in a staged approach to minimise client downtime. Switch 1 is a ws-c3750-48ts and we will be replacing it with a ws-c3750g-48ts. I will be pre-provisioning and installing the new switch into the stack as switch 5 and configuing the ports to be the same as switch 1. The cables will then be moved over from switch 1 to switch 5 so the changeover time should be minimal. When all cutover, I'll power down switch 1, reconfigure the stack cables and remove switch 1 from the stack.
My question is to what occurs next. If I perform a 'no switch 1 provision ws-c3750-48ts' will I be left with switch 2 through to 5 (ie no switch 1)? I can live with this moving forward. I know I can renumber switch 5 to be switch 1 if I want, but my understanding is that I have to reload the member switch which is something I'd like to avoid at this stage. In my reading, I saw the statement - "Note: You cannot use the switch current-stack-member-number renumber new-stack-member-number global configuration command on a provisioned switch. If you do, the command is rejected." I'm a bit confused by this statement, I'm assuming that it is saying that if I do as above but don't issue the 'no switch 1 provision' command, I cannot renumber switch 5 to switch 1 but as long as I use the 'no switch 1 provision' command first, I can renumber switch 5 to switch 1? Will all of my switch 5 port configuration information and any associated references (eg port-channel configuration etc) be changed from gi5/0/x to gi1/0/x if I do renumber?
I have two 2960-s switches with GLC-FE-100FX fibre modules in and I am seeing packet loss over the link that is connected to the modules. When the interface is shutdown and brought back up it always comes up in half duplex even thought it is set to full in the config. I've seen other posts where you have to use the command no duplex then full duplex to get it to come up int full duplex. This does appear to work when I do a show int it says its full duplex however I'm stil seeing 20 - 40% packet loss on the link which suggests to me there is still a speed/duplex issue. The device at the other end is a Cisco 7200 which is set to 100Full. If I plug a Cisco 2811 into the fibre link I get zero packet loss which suggests its a problem with the switch.
I have changed the modules and fibre cables which makes no difference. As I stated at the start I have two 2960's both are showing exactly the same issue. Details of the switch are below the SFP are cisco branded:
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 28 WS-C2960S-24TS-L 12.2(55)SE5 C2960S-UNIVERSALK9-M
interface GigabitEthernet1/0/25
switchport trunk allowed vlan 380,382,384,386
switchport mode trunk
duplex full(code)
How a 6509 pair handles the loss of the other vss switch, and what happens when the other comes back on ?
View 1 Replies View RelatedI have a Cisco 2960S stack and I'd like to tune the timers so that packet loss is minimal if a switch fails.To simulate a failed switch I have reloaded it while running a continuous ping to a management address on the stack's SVI: [code] As I see the same results when a ping is directed through the single switch (switched), and through the firewall (routed), I'm inclined to think that this is due to the stack failover timers on the Catalyst 2960S.Is it possible to change the stack failover timers (i.e hold down, failover etc), to speed up the failover process?
View 1 Replies View RelatedWe have a WS-C3750G-24PS switch running 12.2(50)SE , C3750-IPBASEK9-M in production & stand alone and we want to ask a new Cisco WS-C3750-24P running 12.2(55)SE3 , C3750-IPBASEK9-M into the stack with the 1st one.
Just want to know if it is possible and are there any problems with the IOS being different version.
After I added the 3rd 3750E to my stack on Sunday I can no longer save my configs with 'copy run start' or 'write mem':
#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
nv_done: unable to open "flash:/config.text.new"
nv_done: unable to open "flash:/private-config.text.new"
nv_done: unable to open "flash:/multiple-fs.new"[OK]
[code]....
my flash seems to have plenty of space:
57409536 bytes total (24203776 bytes free)
I am having problem in upgrading Cat2960 because I deleted the flash in this switch already and now I need installing an IOS image? [code]
View 1 Replies View Relatedin our network we were using three 3750-48-s switches with stacking one of the switch due to some hardware failure power problem,
now i want to add a new switch 3750-48-s in the existing Stack two switches , the old two switches ios version is = 12.2(25r)SEC the new Catalyst 3750 io verion is = 12.2(35)SE5
how to add this switch in the existing two stack switches , with documentation
I am looking to add a new 3750 Switcch to an existing stack shown below
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 26 WS-C3750-24P 12.2(35)SE5 C3750-IPBASE-M
2 26 WS-C3750-24P 12.2(35)SE5 C3750-IPBASE-M
3 26 WS-C3750-24P 12.2(35)SE5 C3750-IPBASE-M
[code]....
I have looked on notes to add a switch to an existing stack and haven’t identified answers on how the IOS will be affected on the new switch – will it downgrade to the current stack version or will the current stack upgrade to its version. At this moment in time I would prefer if the new switch IOS downgraded to the current stack IOS version.The new switch is a 3750V2 – will this affect how it joins the stack?The new switch has the image of IPBASEK9-M – again will this affect how it joins the stack?
Trying to find some documentation as to whether there are any other steps for inserting this new module in our N7K. We have 2 blades in already and 2 Sups in 5 & 6. I'm assuming its like the 6500s, where we just slide it in and the OS configures the global parms for it and the default VLAN.
View 2 Replies View RelatedI am having an issue with adding a c3750x switch to an existing switch stack Currently there is 2 x WS-C3750X-48P and I am trying to add another WS-C3750X-48P to this switch I have cabled the switch to the stack using the stack cables and added the command to provision the switch on the exisitng stack. However when I turn the switch on it just goes on its own stack.
I noticed the new switch had a later version of IOS so have downgraded this to the same version as the other switches but still no joy Here is the sh ver from the exisitng stack
uptime is 4 weeks, 4 days, 23 hours, 30 minutes
System image file is "flash:/c3750e-universalk9-mz.122-53.SE2/c3750e-universalk9-mz.122-53.SE2.bin"
License Level: ipbaseLicense Type: PermanentNext reload license Level: ipbase
cisco WS-C3750X-48P (PowerPC405) processor (revision A0) with 262144K bytes of memory.Processor board ID FDO1448Z0FJLast reset from power-on21 Virtual Ethernet interfaces1 FastEthernet interface156 Gigabit Ethernet interfaces6 Ten Gigabit Ethernet interfacesThe password-recovery mechanism is enabled.
[code]....
I am attempting to add and Catalyst 3750 - 12 port Gigabit switch to an existing stack of 3750 48 port switches (non-X fabric). I am not sure how to proceed. These are the two questions/thoughts I have. Any additional perspective I should have before proceeding.
What kind of configuration should I apply to the Gig switch before adding it to the stack?I am sure I will need to assign priority to the new switch, ideally, it will act as master.
We have a cisco stack with 5 ws-c3750-24p 12.2)55)SE3 c3750-ipbasek9-m switches. Can i add a switch to the stack that is the following model: ws-c3750g-48ts 12.2(25)see3 c3750-ipbase-m
View 3 Replies View RelatedI am not sure why the CRC and input errors are increasing in fastethernet port...This port is used as Intradomain cross connect to Data Center service provider for LAN extension between two Data Centers in different locations... The link is 100 MB. The switch port is directly connected to patch panel of DC provider and I believe they have some L3 switch or some other device that is providing LAN extension...
#sh interfaces fastEthernet 0/23
FastEthernet0/23 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0019.3050.1497 (bia 0019.3050.1497)
Description: ASA_VPN_TO
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
[code]....
I am not sure why the CRC and input errors are increasing in fastethernet port...This port is used as Intradomain cross connect to Data Center service provider for LAN extension between two Data Centers in different locations... The link is 100 MB. The switch port is directly connected to patch panel of DC provider and I believe they have some L3 switch or some other device that is providing LAN extension...
#sh interfaces fastEthernet 0/23
FastEthernet0/23 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0019.3050.1497 (bia 0019.3050.1497)
[Code].....
adding/removing/re-adding a workstation to a domain and Active Directory. We use DHCP at work for our addressing scheme. The problem I had when naming a new workstation the same as the one I am replacing on the domain was that I noticed the new pc with that same computer name as the previous pc was still trying to use the IP address that was assigned to the workstation before by dhcp, so the new workstation was not showing it assigned an IP address. I would try pinging the computer name but there was no reply because it was still showing the ip address of the computer disconnected that had the same name.
- remove the faulty workstation from the domain to workgroup, then restart
- then from Active Directory do I need to reset the Computer name
- then do a ipconfig /release on faulty workstation that has been removed from the domain to release the leased ip address in dhcp
- then disconnect the faulty PC and connect the PC I am using to replace the previous PC
- Name this workstation the same as the one I just disconnected and removed from the domain
-Add this PC to the domain and restart
We have two catalyst 6506 switches with 10 gb u plinks and around 120 edge switches cat 3750-x switches. Still the module on the core wheere servers are connected is 1000mbps port.Now if we induct a nexus switch to the datacenter what kinds of benefits we can reap In a virtulised environment as well as real environment?following are the some of the queries.Can we reduce the number of edge switches? ( by virtual environment), Inter operabaility between cat ios and nexus ios, how this will affect the environement,What will be the over all benefits ?, What are the cons of this induction ?
View 22 Replies View RelatedI currently have Cisco 3750G which is currently live and active and fully populated and only have remote access.
I have an additional same switch which I would like to stack. My initial plans were to have 2 GIbit etherchannels, but I came across the option to Stacks both switch with each other.
When I do a show switch on the live switch its set as a Member: [code]
I would like to add the new switch to the stack without losing the config for the switch which is live. I understand that the highest priority of the switches becomes the Master but as the live switch is Priority 1, would chancing this affect the switches config, or would it lose connection at all?
Also when I plug in the new switch and it reboot how do I ensure it becomes the slave without rebooting the live switch?The cables on the switch do they have to go to port1 on the live switch and port 1 on the new switch or can they be port 1 and port 2?
we have 2xNexus model 7010 (let's call them Nexus1 and Nexus2) connected via VPC to a couple of catalyst 6509 switch.Trunking has been enabled on the port-channel defined on both Nexus allowing some vlans.Below the config applied on both port-channel interfaces on both Nexus which are members of the same VPC number: [code]
supposing I'd need to remove some vlans from that trunk (e.g. vlan 100,200 and 300) using command "switchport trunk allowed vlan remove 100,200,300" and that I'll run that command on Nexus at a time (that means there'll be a condition for a short period of time where Nexus1 has removed vlan 100,200 and 300 from the trunk, while Nexus2 is still carrying those 3 vlans on its port-channel which is a VPC member) , could it cause any VPC inconsistency condition suspending VPC interfaces and therefore affecting the service for all remaining Vlans or only Vlan 100, 200 and 300 will be suspended when that condition will be detected?
I have a Cisco SG 300-20 as the core switch, layer 3. It is 192.168.4.6 on VLAN1 and 192.168.5.1 for VLAN2 (VOIP). All the ports are set in trunk mode. DHCP relay is setup on this switch.
The phones connected into a layer 2, Catalyst 2960-S switch. All ports are set in trunk mode. Default gateway on it is set to 192.168.5.1.
DHCP for both VLANs is provided by a Windows Server 2008 R2 server (the relay IP 192.168.4.15).
There is also an ASA 5510 in the mix which is 192.168.4.1. It has a route added to it for the 192.168.5.0 network to go to the SG 300 (192.168.5.1).
Just the two switches can ping each other on the 192.168.5.x network when I "add vlan 2" to the trunk port that is connected between the SG 300 and the 2960. The phones don't get DHCP on the 2960 switch. And I cannot ping 192.168.5.x from the ASA or anything else on the 192.168.4.x network.
After a bit of reading on intra-vlan routing for the SG 300 switch, I am thinking the SG 300 has to be the "center" of things so I need to make it 192.168.4.1 to be the gateway for both VLANs and change the ASA to 192.168.4.2 for VLAN1, etc. And I really can't do asymmetric routing with this switch.
I'm trying to do a Master reset on my Catalyst Express 500 (WS-CE500-24TT v01) and I'm having troubles with this. url...I do everything as it says, but when I plug the cable and I pull up the Web browser nothings appear, just the message that I don't have a Internet connection. The LED port on switch don't stop blinking as LED setup either. Is there another way to do the master reset?
View 0 Replies View RelatedDoes the Model "WS-C2960-24PC-L" Supports IP Routing or not?
View 9 Replies View RelatedI have a frustrating issue with a dynamic VPN head end running IOS 15.2 on 2900's. I have existing keyrings, and isakmp profiles (both main and agressive) running. When I add in a new peer, by adding in a keyring prechared statement and a match identity in the isakmp profile, phase 1 biulds but phase 2 only gets right to the end and the Cisco side resets the connection because it did not get back a response to it's Phase 2 proposal.I have tried a number of soft clear commands to remedy this (I do have 16 other production tunnels I do not want to take down) and no avail. This is very consistent. We had this happen last week in the same manner, and the TAC finally said I must reboot the system. So I removed the cmap from the interface, and reapplied it (using notepad to do it all at once). All the tunnels dropped, and after a few manual restarts on the far end for thos etunnels that are tempermental, all tunnels came back up, including my new add.I have a pair of 3900's running 15.1 code in the US that terminate the same tunnels, and I can add and remove PEERS all day long without resetting anything. Could there be a more polite way of resetting what ever it is that removing the CMAP does to allow my new peer to get the full treatment here?
crypto pki token default removal timeout 0
crypto keyring Site-to-Site
pre-shared-key address a.a.a.a key lkdshjfhjkdsfkjfsjkddedswdes
pre-shared-key address b.b.b.b key lkdshjfhjkdsfkjfsjkddedswdes
[Code] .....
I just negate this and re-add and new peers start working.
I'm having trouble setting up SSH on my new Switch.
no aaa new-model
aaa authentication login default local
ip domain-name king.local
[Code].....
I would like to be able to use Vlan 10 192.168.155.1 for SSH remote management.
I have a statck of 4 2960s switches, with POE powered access points on 2 of them. All of the access points appear to be functioning normally. For some reason, on 3 interfaces connected to access points, I get the following when issuing show interfaces status:
Gi3/0/9 connected: T 7 a-full a-1000 10/100/1000BaseTX
^
My question is regarding the "T" in the status field. I can't find any documentation on this.
I have CISCO 2960 switch at my LAN. How to configure its IP address from console or hyper terminal ?
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