Cisco Switching/Routing :: 3750x 12.2(58)SE2 IPBASE 10gb Uplink Ports Not Being Displayed

May 28, 2012

we have just purchased a few 3750x's that we intend to add to our 3750g stacks.  We've purchased the 10gb uplink modules, C3kx-nm-10gt, but when they are installed they are not appearing in the switches web gui nor can you configure them correctly.  If we upgrade a 3750x to 15.0.1 they seem to work fine.  All of our current 3750g's are running 12.2(58)SE2 IPBASE so we don't really want to have to upgrade them all to 15.0.1
Are we missing something or do the 10gb modules only work properly with ios 15.0.1?

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Cisco Switching/Routing :: WS-C2960S-24PD-L PoE+ 10Gb Switch Using 1Gb Uplink

Jan 24, 2013

I have configured about 20 of these switches now, and notice in the port listings a TE1/1//1 TE1/1/2 and GI1/1/1 GI1/1/2 uplink port. There are only two uplink SFP+ ports. I now have a reason to install with a 1Gb uplink to the Core. I am using a GLC-LH module at each end. I did configure the TE1/1/1 port for the uplink. Does not work though..Do I need to configure the two GI1/1/1 and 1/1/2 ports for uplink, remove the TE configuration for the uplink to work? Using the UNIVERSAL code with a LANBase license.

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Cisco Switching/Routing :: 3750X - IPBase And GhostCast Server

Jul 23, 2012

I imagine this question has been posted a million times before but here goes.  I am trying to image a number of machines via Ghost Cast server across a 3750X stack running multiple V LAN's.  I am running the IP BASE image so am aware that multicast functionality is limited.

 I am running 12.2(55)SE3. I have tried adding both V LAN's into an IGMP group using the "ip igmp join-group" command which shows both V LANs as part of the group but to no real effect.  To be honest though I am clutching at straws!  I'm just starting to read through the documentation so hopefully that will work.

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Cisco WAN :: X2-10GB-LR Having 10GB Uplink Between Two Buildings

Oct 20, 2011

My manager ordered some Cisco X2-10GB-LR in hopes of having a 10GB uplink between two buildings. We put those modules on the switch and we are getting link flap errors, then the ports goes into err-disabled state.
I was later told there is a couple of "hops" between the buildings, it could be a patch panel or a fiber switch, I do not know at this point. My guess is, we are getting link flap because the "hops" are only running at 1GB. Would this be a typical sympton of the link flap error message? and is there any way to test if there is switches inbetween our routers?

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Cisco Switching/Routing :: Possible To Do LACP Using 2 X 10GB Between 3750X / 2960S Switches

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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Cisco Switching/Routing :: EtherChannel On 3750G-16TD-S And 3750x-48T-S With 10GB

Nov 20, 2011

Any experience with bundling a 10GB interface on a 3750G-16TD-S with a WS-C3750X-48T-S with a 10GB interface. I have worked with 5 different TAC engineers and so far I have not gotten an answer on why the switch will not let me bundle the 10GB with another 10GB interface.
Same switch Stack – not a cross stack.
Tried every configuration possible with no luck.   I originally thought it might be the stack-ring speed – I corrected that today and it is running at 32GB –
The only thing I can think of now is it might be a hardware limitation on the 3750G-16TD-S ?
Q. What performance of the 10 Gigabit Ethernet port on the Cisco Catalyst WS-C3750G-16TD switches?

A. The Ten Gigabit Ethernet uplink on the Cisco Catalyst WS-C3750G-16TD switches is 1.25:1 oversubscribed and provides maximum throughput of 8Gb/s.   –

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Cisco Switching/Routing :: Catalyst 3750x 24 PS POE With C3KX-NM-10G Uplink Modules?

Sep 5, 2012

our network is spread over  15 floors and each floor we have 5-6 switches. we are planning to purchase cat3750-x 24 ps poe with C3KX-NM-10G  network modules. Each floor has two up links  to the core  switch  with  single mode fiber and other being the multimode.Suppose if we are purchasing 75 switches  do we have to  purchase 75 C3KX-NM-10 G  modules.? or  can we limit our purchase with 15 C3KX-NM-10G   sothat two uplinks from each floor can be made?  since network modules are optional cost factor is invovled. Or any issue with stacking ? the SFPs will be LR  and LRM MODULES.looking for an answer ? whether the new usb type console cable comes bundled with  cat350x or shall we have to order separately?

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Cisco Switching/Routing :: 3750X Switches Dropping Packets On Uplink Interface?

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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Cisco Switching/Routing :: Why Nexus 2k Has 8 Uplink Ports

Dec 9, 2012

Why the nexus 2k has 8 uplink ports ?
the nexus 7k or 5k can be devided into 4 virtual devices  ( using vdc)and making 8 uplink ports in the 2k will allow us to use the extender for all the 4 vdc's with 2 uplinks ( for redundancy ) from each vdc   

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Cisco Switching/Routing :: CRC Errors On Uplink Ports To Nexus 7000

Oct 31, 2011

we have several uplink ports on a verity of cisco switches connecting to the nexus 7000, recording CRC errors.most are trunked ports with the following configuration. [code]

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Cisco Switching/Routing :: 4500 - Redundant Supervisor 7-E - Use All Uplink Ports At Same Time

Dec 15, 2011

I know in the past on earlier models of the supervisors that you couldn't use all eight uplink ports(4 on each supervisor) simultaneously when you have two supervisors on the chassis.  Is this the same case for the 10Gb uplinks on the supervisor 7-E on the 4500 chassis?  I tried doing my research but couldn't find an answer.

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Cisco Switching/Routing :: 3750X 1GB Ports Not Coming Up

Jan 22, 2013

I have hardcoded 1GB ports on 3750X to 1000 and full duplex for all servers connected. THe ports are not coming up with this speed and duplex settings. If I configure them to 100, I am able to see the port is up. Whereas if i connect the same servers to 2950 switches, i can see the ports working fine with 1000 speed ..we have tried with the latest universal IOS as well

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Cisco Switching/Routing :: 3750x Ports Become Unusable

Jul 15, 2012

We are having an odd occurance happening to our 3750x stacks. For no apperent reason ports will become unusable. Doing a shut/no shut on the ports has no effect. The weird thing is that the indicator lights will stay solid green even if there is nothing plugged into them. We had this happen a couple months ago and a reboot fixed the issue. But as it has happened again makes me think that is was not a fluke. As of right now it only effects a few ports.
current code we are running is Version 12.2(53r)SE2

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Cisco Switching/Routing :: Catalyst 3750X-48P Switch Ports Dead

Jan 31, 2012

I work at a hospital and we have 3750X-48P switches in stacks in various locations throughout the hospital.  We have noticed that when an EKG machine is plugged into one of the ports on some of these switches and the EKG machines are set manually to 100/Full, the ports are no longer usable until the switch is restarted.  The switch is configured for auto.  If the EKG machine is set to auto, it will work and not cause problems.  The link on the interface will show up/up and there will be output packets increasing.  However, there will be no inputs on the link and the port is unusable.  Unfortunately, even when the device is removed, the port becomes unusable for any device.  Is there any way to fix this problem without rebooting the switch?

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Cisco Switching/Routing :: 3750x - MAC Address Not Captured On Switch Ports

Feb 29, 2012

In my environment we have 3750x switches running ios 15.0 (1) SE2.  We have port security mac address sticky configured on all our switch ports.  I noticed that we have several interfaces (on different switches) that are up but have not captured the MAC address from the workstation.  Here is one example:
interface GigabitEthernet2/0/11
switchport mode access
switchport port-security


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Cisco Switching/Routing :: 3750x Switch That Handle Its 24 / 48 Ports At 10 Gbps With Copper

Dec 19, 2011

Is there a switch that handle its 24/48 ports at 10 Gbps with copper?. I have checked  3750 X but just handle 2 SFP with 10 Gbps.The requirement is to use this switch as CORE and connect 12 switches (access) using  its uplinks at 10 Gbps  with copper ( in this case 3750 X can be used).using copper at 10 Gbps the distance is still 100 m?

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Cisco Switching/Routing :: 3750X - Adding Ports To Existing Port-channel

Jan 29, 2013

I need to tear down an existing port-channel on a 3750X running c3750e-universalk9-mz.150-1.SE3.bin. This port channel is currently down down. It has three ports in it that will be added one each to three existing port-channels, I am assuming as long as the "channel-group" command is exactly the same as it is on the three existing port-channels I should be ok just adding the new port. One point to note is that the three existing port-channels all have three ports so this will be adding the fourth port to each port-channel. I know after reading that it is a best practice for load balancing to use either 2, 4, or 8 ports for a port-channel. Also what is the command to see all ports that are in a port channel?

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Cisco Switching/Routing :: IPservices Vs IPbase On 6509-E

Jan 14, 2013

Upgrading two 6509-E routers containing sup32's to two new 6509-E routers containing sup2T's. We run a large OSPF network but our core mainly is a switched network and only has about 5 Vlans. Now this could change in the future and there maybe more Vlans on it.
Just after realising our new sup32's shiped with ipbase instead of ipservices. Version is s2t54-IPBASEK9_NPE-M. My question is is this version ok for routing?
Our old current 6509's are version s32p3-ipbasek9-mz.122-18.ZYA3.bin and they do some routing about the same amount these new routers will do. Here is a summary of the routing table:
IP routing table name is Default-IP-Routing-Table(0)
Route Source    Networks    Subnets     Overhead    Memory (bytes)
connected       1           3           424         640
static          0           0           0           0
ospf 1          26          348         27520       59840
  Intra-area: 366 Inter-area: 0 External-1: 0 External-2: 8
  NSSA External-1: 0 NSSA External-2: 0
internal        12                                  14160
Total           39          351         27944       74640
Removing Queue Size 0
 Will I need to upgrade the new sup2T's to ipservices or will this version work ok?

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Cisco Switching/Routing :: Upgrading 4900m IOS From IPBase To Enterprise?

Feb 10, 2013

My current version IOS is cat4500e-ipbase-mz.122-53.SG5.bin.  I just got a new version cat4500e-entservicesk9-mz.122-53.SG5.bin.I put the new version in bootflash: directory and tried various methods of starting the IOS up to run the new version but it always started in the original ipbase version.  My start-config shows:

boot system flash bootflash:cat4500e-entservices9l-mz.122-53.SG5.bin
and I even deleted the ipbase version in the bootflash: directoy so then my switch would not even boot up at all and hung in rommon. In rommon I tried

boot bootflash:cat4500e-entservicesk9-mz.122-53.SG5.bin
and the result I got back was
File has bad file magic number: 0x0
So I had to point the switch to my tftp server and boot back into a back up copy of ipbase.  how I can get my new IOS version to work?  I understand I might have to download it again but I just got it so I am skeptical it is a bad file. [URL] as a procedure guide and I do notice some of those commands/steps do not work on my 4900m switch.

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Cisco Switching/Routing :: Catalyst 4503 - SSH Missing Cat4503 15.0 IPbase

May 18, 2013

After deleting configuration with „write erase“ and reloading, our Cisco Catalyst 4503 with version cat4500e-universal.SPA.03.02.00.XO.150-2.XO.bin, and licence ipbase, doesn't recognize any command regarding SSH. We tried configuring SSH key with „crypto key generate“, but that command is not recognized either.

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Cisco Switching/Routing :: C3750X Stack / Difference Between LanBase And IPBase For ISCSI?

Dec 26, 2011

Cisco let us try a CISCO C3750X- 24T-S  Stack (2 switches)  ->> IpBase Sofware licence We've 2 Hyper-v 2008 R2 and one SAN Netapp FAS2040 connected via Iscsi.All was working well with this stacks.Hyper-V see Nas Iscsi interface without problem. Even with basic stack config (no Vlan, ect...).Then, after this test period, we bought a C3750X-24T-L stack (2 switches) to replace the stack lent by Cisco.This one is LanBase Software.
With this stack, hyper-v work very bad ! We've got a lot of Iscsi error in the eventvwr.I can't access luns.So, is there a difference between LanBase and IpBase for a iscsi use ?I put the 24T-S config on the 24T-L switch without pb. So config is the same on both stacks...Also i've got a "TestPortAsicLoopback" = "Failed" on the new stack...I've tried with other stack cables. Not better.

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Using SFP+ Uplink Ports On A Switch?

Mar 19, 2013

I have a question regarding uplink ports on a switch. Specifically the SFP+ variety. Could these uplink ports be used to connect directly to a fileserver? To be more specific, would the uplink port on the HP 3800 Switches connect directly to a file server that has the SFP+ card installed?

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Cisco :: Supervisor 2T Uplink Ports?

Dec 31, 2012

So the 2T comes with 2 10GE and 3 GE uplink ports. Can you use all 5, one or the other, a mix, or what? How does that work? It's not really clear from reviewing the products webpage or data sheet.

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Cisco Switching/Routing :: X2-10GB-SR Compatible With GLC-SX-MM?

Apr 9, 2013

one side Catalyst 6500 module with X2-10GB-SR= otherside WS-C2960S-48FPD-L.
is both end compatible with each other.

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Cisco Switching/Routing :: X2-10GB-SR Compatible With 3750-E?

Jan 31, 2012

i will be buying 2 x 3750-E and will connect our server with 10G to the x2 port of 3750.  is X2-10gb-SR compatible with this? do i need any converter module?

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Routers / Switches :: Uplink Ports Used For ISCSI?

Nov 15, 2012

We have a single HP 2810 switch being used for an iSCSI SAN.We want to replace it with dual higher end switches.But we've got another SAN to also setup now - Dell Equallogic PS6010E - that has 10gb iSCSI SFP+ ports.Can the 4 x SFP+ uplink ports on the Dell PowerConnect PCT5548 or the HP 3800-48G-4SFP+ switch be used for just the 10gb iSCSI, while the other 48 handle the 1gb iSCSI?We were told the uplink ports don't have buffering, making them bad ports for iSCSI traffic and only useful as uplinks to another switch.We only need 8 x 10gb ports (4 for 2 servers, and 4 for the Equallogic SAN), so if the above would work, it would probably save us $10,000 from having to buy a separate 24 port dedicated 10gb switch to handle it.

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Cisco Switches :: SG500x How Many 10GE Ports Can Be Used For Uplink

Apr 25, 2013

i was checking the datasheet of 500X series and got confused regarding the 10GE uplinks. how many 10GE ports can be used for uplink and which transceiver should be used for 10GE copper uplink? for example, SG500x-24 switch has 24GE ports and 4x10GE uplinks. can i use the 4x10GE ports for uplinks or only 2 ports are for uplink and the rest for stacking?

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Cisco Switching/Routing :: 4500 Can Connect 10Gb SFP+ To Standard 1Gb SFP

Nov 15, 2011

I'm looking at provisioning a Catalyst 4500 with a WS-X4712-SFP+E module to allow for future 10Gb connectivity via 10Gb SFP+ interfaces.  These cards are backwards compatible with standard 1Gb SFP interfaces but I'm wondering about the other way around; ie. can you populate these blades with 10Gb SFP+ interfaces when they connect to Catalysts with only 1Gb SFP interfaces at the other end? 
The data sheets don't really explain this.  It seems pointless getting 10Gb SFP+ interfaces for the 4500 when it's only 1Gb at the access layer end, but these access switches will be replaced in the near future (~12 months) and if the 10Gb SFP+ interfaces support connections at 1Gb speeds upfront, it would mean I could retain these interfaces when the access switches upgrade to 10Gb connectivity capabilities down the track. Does the 10Gb SFP+ interfaces are compatible with 1Gb SFP's or only other 10Gb SFP+ interfaces?

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Cisco Switching/Routing :: 6509-E VSS 10gb Port Count?

Jan 15, 2012

Created two 6509s as VSS with just one 10gb connection?I know it is recommended to use both the 10gb connections on the sup-720 from below configuration guide
Information about VSL Topology  
A VSS contains two chassis that communicate using the VSL, which is a  special port group. Configure both of the 10-Gigabit Ethernet ports on  the supervisor engines as VSL ports.
But will the VSS come up if I use just the one?

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Cisco Switching/Routing :: 4900M Connecting 10GB Interface To 1GB

May 12, 2012

I have 4900M with X2-10G-LX4I need to have a link from it to 3560X GLC-SX-MM using MM Fiber Patch Cord.any configuration required in 4900M to change the speed of X2-10GB-LX4 to 1GB ?

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Cisco Switching/Routing :: X2-10GB-T Transceiver Supported On WS-X45-SUP6L

Feb 7, 2012

Does the X2-10GB-T copper transceiver is supported on the WS-X45-SUP6L supervisor?

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Cisco Switching/Routing :: 3750 Stack - 10GB And 1GB Connections

May 22, 2012

I have two 3750 stacks that are currently connected using two1GB fiber connections in an etherchannel. I now added new switches to each stack with 10GB modules in them. We would like to bring up the 10GB connection, but still have one of the 1GB lines as a backup, or even the whole etherchannel. Is there a way for us to make the 10GB the main and the 1GB the standby?

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Cisco Switching/Routing :: 5596 - Extending 10Gb/s LAN Between Sites

Dec 14, 2011

For a simple 4x sites design for backup consolidation (3x sites connected to one central site), does the design in the attached JPEG make sense and is the configuration achievable using the specified parts?
Brief Explanation:
- Each site is to have servers with 2x 10Gb/s Ethernet (both teamed/bonded/etc) and one NIC on each of the 2x switches in the site (if possible). Each site will also have 2x Cisco Nexus 5596UP Switch (though the P version may be used instead of the UP).
- Two of the sites are within 10KM of the central site
- The last site is about 35KM from the central site
- It is required to have a minimum bandwidth of 10Gb/s between any site and the central site
- I have specified 10Gb/s LW SFP+ and 10Gb/s LW SFP+ (for the 2x 10KM and 1x 35KM sites)
- are there any special licenses needed?
- as asked before, can such a "simple" design work as-is?
- what sort of single-mode fiber would fit the bill (especially for the 40KM link) - 9nm?

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