Cisco Switching/Routing :: 3560X - Using 10 / Duplex Half On Gigabit Port Not Working?

Sep 24, 2012

We recently upgraded the switch to which an old security device was connected.  It worked fine on the old switch's FastEthernet port, which was configured for speed 10 and duplex half, as that is what the device required. The new switch is a 3560X with all Gigabit ports, but the security device's port, also configured with speed 10 and duplex half, does not connect properly.As a temporary test, we daisychained another switch that has FastEthernet ports, and the security device works again.Is there anything else that needs to be added to the configuration, when using Gigabit ports at 10/half?

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Cisco Switching/Routing :: Force Gigabit Ethernet Port To Be 1000 Full Duplex In Catalyst Express 500 Series?

Sep 1, 2007

Can we force the Gigabit Ethernet port to be 1000 full duplex in Cisco Catalyst Express 500 series?

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Cisco Switching/Routing :: 6509 - In Auto Negotiation Mode It Comes Up In Half Duplex

Jun 11, 2012

We are facing to an annoying issue. We have a 6509 running in Catos 8.3(4) with WS-X6548-GE-TX, WS-X6348-RJ-45 and WS-X6148-RJ-45. When we configure the mode in auto negotiation, it comes up in half duplex. We need to configure the speed mode at 100Mbit/Full to make it work. But if the chassis or port restarts (not the server), the link becomes half duplex. This happens only on module in Gigabyte like WS-X6548-GE-TX.

Cable have been replaced but does not work. It is not happened on another chassis running on IOS 12.2(18)SXF17b with WS-X6548-GE-TX.

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Cisco Routers :: RV016 - Wan Port Is Showing Half Duplex?

Oct 20, 2011

On RV016 router WAN port 1 is showing Half duplex wen i check it in Port setup but when i check it on Port status its showing me as Half duplex, how can we force it to make it full duplex.

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Cisco Switching/Routing :: Cat2960 Gigabit Port Not Working?

Mar 12, 2012

Brand new 2960. When I plug a cable into the port, nothing happens. The port light doesn't begin negotiation or anything, it just stays dark. The cable works fine--I have it on another switchport with a crossover connector connecting to a little Cisco SOHO switch without problems.
 
I've done the following:
switchport
switchport mode trunk
switchport trunk allowed vlan 1
no shutdown
 
In other words, I've fiddled with it. But I don't know why it doesn't light up..

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Cisco Switching/Routing :: 4507 Switch Port Duplex Message?

May 3, 2012

what is causing " Gigabit port is restricted to full duplex" while trying to hard code speed/duplex on a 4507 switch port?

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Cisco Switching/Routing :: Duplex Mode On HSRP Routed Port On 3750

Nov 15, 2012

What should the duplex mode to be set on a routed port gi0/21 that are running HSRP ? I try setting the gi0/21 to full, but it caused the port to be down. The only way for the port to be up is setting it to half duplex.
 
Cisco 3750 Switch
==============
interface GigabitEthernet0/21
no switchport
ip address 10.200.104.34 255.255.255.248

[Code].....

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Cisco Switching/Routing :: Can't Configure To 100 Full Duplex One Port From Target WS-X6724-SFP

Nov 2, 2011

I would like to know why i can't configure to 100 full duplex one port from target follow:  WS-X6724-SFP

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Cisco Switching/Routing :: 3560X C3KX-NM-10G (SFP Link Is Not Working)?

May 12, 2012

I am trying to connect tow 3560X using a fiber cable (MM)I have C3KX-NM-10G in both switches (4 ports module)I have GLC-SX-MM in both switches (connected to G1/1)both switches are able to see & recognize the NM as well as the SFP.

Fiber Cable is tested Fiber Patch Cord also tested both ports configured as a trunks but also the switches are not able to see each other (even when I removed the trunks configuration from both of them)CDP neibour is showing nothing no links & no LED blink in any switch both switches are running c3560e-universalk9-mz.122-55.SE3 IOS?

There is no any other configuration in both switches.

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Downloading Large File Half Duplex?

Mar 6, 2012

if I have a half duplex 10 mbs connection, is the max speed to download a large file 5 mbs or would the download tend to hog the channel direction?

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Cisco WAN :: Set Ports From WS-C2940-8TF-S To Full And Half-duplex

Sep 28, 2011

Howto set ports from WS-C2940-8TF-S to full- and half-duplex 100Mbit?

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Cisco Switching/Routing :: Why Last Port Of Two Catalyst 3560X Are Connected Together

May 22, 2012

We have two catalyst 3560X 24T-S switches connected on two separate LANs (both the networks are redundant to each other). The last port of the switches are connected together?

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Cisco Switching/Routing :: 3560x / Ethernet Trunk Port - What Is Hogging Bandwidth

Aug 15, 2012

I need to find out what is killing my Ethernet wan circuit urgently, It is a Ethernet trunk port with v lans tagged across it.
 
its a 3560x switch.
 
I configured span with the replicate keyword, but I'm not seeing all the traffic I'm sure.
 
I'm using wire shark.
 
Is there anything I can do to find what is causing this?

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Cisco Switching/Routing :: Gigabit Ports Not Working On 2950?

Apr 18, 2012

I am trying to test the gigabit ports on a Cisco 2950 switch. 1000Base-SX.  I have the internet or dhcp server connected to port 24 on the first switch and my pc hooked up to the (any) port on the second switch. Both switchs are connected with a fiberoptic cable with MTRJ connectors on either side.
 
Now when I use gi0/2 on both switchs all works fine. I get a dhcp address from the router on the other end of the first switch. but when ever I include gi0/1 on either end of the fiber optic cable neither of the ports will initialize (neither of the leds above the ports light up). I have deleted all the config files before booting up the switchs so they should have a default blank configuration.
 
When looking at the Http web page for the switch I dont see any issues with the port. what can I do to make sure these ports are working or can be configured?
 
 I will not be able to post back any more information about the switch until next tuesday. Im off till then.

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Cisco Switching/Routing :: 3750 - Gigabit Ports Not Working

May 1, 2013

I have two switches, WS-3750-24PS-S connected in two cabs via fiber. Patch panels at both ends with patch leads. Used tester to confirm end to end fiber connectivity. When plugged in, one switch lights up the other does nothing.
 
Ports are as follows:
 
interface GigabitEthernet1/0/2
switchport trunk encapsulation dot1q
switchport mode trunk
 
same at both ends. Tried both GI ports same result. swapped transceivers over and the same result, (one switch lit one not - the same switch in both cases). put both transceiver in each switch, (gi0/1-0/2 in a single switch). on the one that lights up in the original scenario we get link on both ports and they come up, on the other nothing happens. shut down both ports on the malfunctioning switch and no shut them, no change.
 
Show transceivers doesn't show transceivers on the malfunctioning switch, and no attempt is made to bring the ports up if the fiber is removed and replaced.
 
it is almost as though the two gb ports are kaput. Anything else I can try?

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Dec 29, 2012

I have a Cisco 2851 router and need an additional gigabit Ethernet port. How to get the part number I need to order?

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Cisco Switching/Routing :: Reset SRW2008P 8-port Gigabit Switch

Apr 12, 2012

Is it possible to reset this switch oif yo uare unable to get into the console or web interfaces?

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Cisco Switching/Routing :: 4948E - Configure Switch Gigabit Port

Sep 11, 2012

Trying to configure the Cisco 4948e switch gigabit ethernet port with "switch port trunk encapsulation dot1q", but didn't get the option. Please find below the options got after "swith port trunk"............
 
SW(config-if)#switch port trunk ?
  allowed       Set allowed V LAN characteristics when interface is in trunking mode
  native         Set trunking native characteristics when interface is in trunking mode
  pruning       Set pruning V LAN characteristics when interface is in trunking mode
 
SW(config-if)#switch port trunk. Please find below the version of the SW............ 
 
SW#sh ver
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-LANBASE-M), Versi
on 12.2(54)SG1, RELEASE SOFTWARE (fc1)
Technical Support: {URL} 
ROM: 12.2(44r)SG11
Hobgoblin Revision 21, Fortooine Revision 1.22
[code]...
 
So, whether the command is not supporting on this Cisco switch ? But we have Cisco 4948 Cisco sw where that command is working fine.

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Cisco Switching/Routing :: 4500 24-port Gigabit Module Being Picky

Jan 7, 2013

We have recently purchased a Cisco 4506 that has several Gigabit Ethernet modules installed.One of the Ethernet Gigabit modules - a WS-X4424-GB-RJ45 - is being picky with who it talks to at Gigabit Ethernet.
 
If I plug a laptop into one of it's RJ45 ports using a Cat 6 cable, nothing happens.  No link light, no notification of link up or down on port statistics, absolutely nothing.If I plug a server into the same port it works fine at Gigabit Ethernet (even using the same Cat 6 cable).I can get the module to recognize a laptop if I fix the speed/duplex on the laptop to 100Mb/Full. I have tried this with other staff laptops from different vendors (HP / Dell / etc.) all with the same result.
 
The module directly underneath this module - a WS-X4448-GB-RJ45 - works fine for both laptops and servers.  We have tried swapping the module positions but to no avail. 

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Cisco Switching/Routing :: 3524XL Cannot Access Any Traffic From Gigabit Port Over Fiber

Nov 20, 2011

We have Cisco 3524XL switch, Motorola AXS1800 chassis. I am configuring this cisco switch so I can connect AXS1800 traffic thru cisco 3524XL, on switch port gigabit 0/1, I am using cisco Part no. WS-G5486 (1000Base-LX) connector to connect to AXS1800, both port are member of vlan 200 allowed, and configured dhcp-server 192.168.0.1, but still I can't ping any host or host can't get DHCP server.

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Cisco Switching/Routing :: 3524XL Can't Access Any Traffic From Gigabit 0/1 Port Over Fiber

Dec 26, 2011

We have Cisco 3524XL switch, Motorola AXS1800 chassis. I am configuring this Cisco switch so I can connect AXS1800 traffic thru Cisco 3524XL, on switch port gigabit 0/1, I am using Cisco Part no. WS-G5486 (1000Base-LX) connector to connect to AXS1800, both port are member of v lan 200 allowed, and configured  dhcp-server 192.168.0.1, but still I can't ping any host or host can't get DHCP server. I have attached my config file for your review.

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Cisco Switching/Routing :: C3550 - Configure Loop Back Interface On Gigabit Fiber Port

Sep 14, 2012

I am trying to configure a loop back interface like so: [URL], on the following device:

C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(50)SE, RELEASE SOFTWARE (fc1on port gig0/1 which is using a 1000Base-SX adapter. This is for troubleshooting purposes and it does not appear to be a feasible option.  Is there another way to accomplish in the IOS?

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Cisco Switching/Routing :: GLC-T In C3KX-NM-10G - Full Duplex Does Not Work

Jun 4, 2013

I have C3750X with C3KX-NM-10G, and have-T SFP in slot 3 ( means it is not in SFP+ slot ).I need to set speed&duplex hard to 100/Full, but if I do the link goes down. I have the same settings on the other side, only IOS version is different.I tried other speeds - 10 and 1000, but no one works with Full. When I change duplex to Auto it works fine.The reason why I am doing this on C3KX-NM-10G is because I need to use NetFlow and cannot use the chassis' copper port. At the moment the ports are connected through a copper patch cord, but in full production there will be a radio link in between that requires 100M/Full to be set hard.I am trying to search for any document that would describe this limitation, but cannot find any. Also port capabilities do not indicate duplex could not be set to full:

show interfaces g1/1/3 capabilities
GigabitEthernet1/1/3
  Model:                 WS-C3750X-48P
  Type:                  10/100/1000BaseTX SFP
  Speed:                 10,100,1000,10000,auto
  Duplex:                half,full,auto
  Trunk encap. type:     802.1Q,ISL

[code]....

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Cisco Switching/Routing :: 2950 Cannot Seem To Correct A Duplex Mismatch

May 14, 2012

I cannot seem to correct a duplex mismatch issue.I have a Cisco 2950 switch connected to a Cisco 2621 router.  I am running a per-interface Vlan.  I have two fastethernet ports and one NM-1E card installed on the router.  One fastethernet port is connected to my gateway router, the second fastethernet port is connected to my switch for one Vlan. The NM-1E Ethernet card is being used for the second Vlan which consists of nine IP cameras.  Though the cameras on the Vlan are working fine.Now, the NM-1E card is set to half-duplex.  I know that I should be using a fastethernet module like a 1FE 2W or a 2FE 2W card, (which I have,) but the router does not recogonize either one of these cards when they are installed, and yes, they have been confirmed as good cards.
 
Using Router-on-a-Stick configuration is out due to the bandwidth contention besides the fact that the router I am using it on will not handle this due to the flash being an older version.I have forced the switchport to half duplex, setting the speed to 10. I was getting fewer error messages at first, but they soon increased back to the frequency that they began with.I have set the switchport to duplex auto, but this failed to resolve the issue.Obviously, I cannot force the switchport into duplex full since the NM-1E interface is set to half duplex.  Can the NM-1E card be configured to full duplex?  I can't seem to find any documentation showing where it can be forced to full duplex mode.Could nine IP cameras just be too much for both the router and switch to handle?

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Cisco Switching/Routing :: Duplex Mismatch Between 2950 And 4503

Jul 8, 2012

I have a 4503 switch (in L2 mode) running 12.1 hooked into a C2950 running 12.1, using regular 4 pair Cat5e cables to connect between them. The 4503 has Gigabit port 2/1 trunking to the 2950's Fa port 0/13.
 
When I set the duplex mode to DUPLEX FULL and SPEED to SPEED 100 on both switches (for their trunk ports) the link fails, and my 4503 loses connectivity (since it gets it from the 2950).
 
Here is my config from the switches (per description):
 
The 4503:
 
interface GigabitEthernet2/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,2,100-140

[Code].....
 
Note, this is the only mode that works (which seems to work fine, but I get TERRIBLE throughput for anything that goes over the 2950.

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Cisco Switching/Routing :: 3750G-12S-S / Cannot Set Int G1/0/1 Into Speed 100 / Duplex Full

Aug 12, 2011

3750G-12S-S.Problem description:I had a WS-3750G-12S-S in production with a defective fan tray and needed to change it.I faced to trouble with inter g1/0/1 on the new switch( it worked fine on the old).
 
Here the config for old switch:

interfacigabitEthernet1/0/1
  switchport trunk encapsulation dot1q
switchport trunk allowed vlan 111-113,278,790
switchpmode trunk
speed 100

[code]....
 
even if I configure  speed nonegotiate that does not work.

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Cisco Switching/Routing :: SF 302-08 Fiber Termination Is Multi-mode LC Duplex

Jan 2, 2012

I am doing an small project, I have to connect 4 cisco switches SF 302-08 (1 GBIC each one) to a core switch SGE 2000 (4 GBICs).  Because of cable length I have go connect all 5 switches with fiber. The fiber termination is multimode LC duplex. My confusion is on the mini GBICs. There is compatibilities issues i been reading. [code]

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Cisco Switching/Routing :: 6500 - Can Native VLan Or Duplex Mismatch

May 25, 2012

1 week ago, I got a call from a client that reported a network outage, the client told me that, 3 switch has crashed he try to console but it just hang. I ask him, did you change something? he said he didn't change anything, he just pluged a nortelswitch to the cisco switch number 9, but that switch doesn't crash like the others (3,4,8). I check the uptime, and yes the switch never been powered off..
 
   the topology look like this
 
              ____ 6500  ____
             /      /    |           
           1      2    3    4       5  ...... 9
 
 
the vlan is end to end vlan, so vlan span between all those switches. transparant. this is collapsed topology, core and distribution is the 6500 itself all of the 1-9 access switch are in the same rack, with no loopguard, and bpdu guard configured. and connected to the core using etherchannel. the problem is there is no log available to start the troubleshooting/investigation.

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May 1, 2012

Nothing happens when we plug a USB Flash Drive into an SUP7L-E USB port.

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Cisco Switching/Routing :: 3550 - Hard Code Speed And Duplex Settings

Mar 31, 2013

I am trying to hard code the speed and duplex settings on interfaces gigabit 0/1 - 2 interfaces with out success.

DSW121(config)#interface range g0/1 - 02
DSW121(config-if-range)#speed ?
Nonegotiate  Do not negotiate speed
[Code]...

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Cisco Switching/Routing :: Duplex Mismatch Between 2960 (LANBase Image) And 6506

Jan 21, 2010

I have the following issue; I am getting a duplex mismatch between a Cisco 2960 TT-L Switch running IOS 12.2(35) LAN Base Image (Gig0/1) and a Cisco 6506 Switch running IOS 12.2(33)SXH Adv IP Services (Gig2/19).
 
I have tried several combinations of the duplex/speed settings on both sides but the only that works is setting duplex/speed AUTO on the Cisco 2960 which ends up autonegotiating to HALF duplex and 100Mbps.

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Cisco Switching/Routing :: Access Layer Switching With 2960 / 3560x / 3750x And 4506

Jan 17, 2013

My management has tasked me to give them a high level overview of the different switching we can choose for our new building.
 
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
 
I am working on the spreadsheet and it looks like this (Not totally filled):

2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4 
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board.  For the IDF's I was thinking of two 4010's.

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Cisco Switching/Routing :: 7060 - POE Not Working On Specific Port

Mar 18, 2013

when plugging a Cisco 7060 to the specific switch port it does not power on.  The inline power consumption is abnormally high compared to the other phones that are plugged in, maybe double the amount. 

non Poe devices work on the same port.
 
I used multiple cables and phones.

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