Cisco Switching/Routing :: C3750X When Run Command CDP NEIGHBORS / 3400 Shows No Devices

Aug 6, 2012

We just installed a Cisco ME-3400EG switch at one of our sites.  A Cisco C3750X switch is connected to the 3400.  When we run the command CDP NEIGHBORS, the 3400 shows no devices.  We can access the 3750 via the 3400.  Also, when we run CDP NEIGHBORS on the 3750 we do not see the 3400 (but other devices are displayed).  How can we get CDP to display the devices on the 3400?  We have already tryed CDP RUN.

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Cisco Switching/Routing :: 3560 Command Shows Two Devices Connected Through Same Local Port?

Oct 14, 2012

show cdp neighbors command shows two devices connected through the same local port?I have a Cisco 3560 that when I issue the "show cdp neighbors" command I get the following results: [code]
 
the question is why is this showing that Gig0/3 is being used twice to  connect to two different devices.  I have verified there is no hub  connected to this port and in fact Switch3 is not connected to Switch1  at all yet it still shows up in the CDP table.
 
I have cleared the CDP table on every device at this location and still get the same results. 

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Cisco Switching/Routing :: 3400-ME No Boot System Command Available In Configuration

Feb 25, 2013

I have a Cisco switch 3400-ME, it's running IOS1.bin file. Now i want to change the running IOS to IOS0.bin.I entered 2 commands:
 
boot system flash:dir1/IOS0.bin
boot system flash:dir1/IOS1.bin
 
But when i show running config, it has no any boot system commands. when i relboot that switch?

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Cisco Switching/Routing :: Can Stack Ws-c3750x-48p-l And Ws-c3750x-48pf-s

May 16, 2013

Recently one of our stack switch got failed, Rma raised but we received some different part number.The dobut is like can we stack the below switches.
 
ws-c3750x-48p-l v02 (old switch)
 
ws-c3750x-48pf-s v04 (RMA switch)

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Cisco Switching/Routing :: Stacking WS-C3750X-12S-E And WS-C3750X-48P-E

Nov 7, 2012

Can i put in stack the ws-c3750X-12S-E and ws-c3750X-48P-E? considering the follow features:
 
WS-C3750X-48P-E (Catalyst 3750X 48 Port PoE IP Services)
S375XVK9T-12253S
CAT 3750X IOS UNIVERSAL WITH WEB BASE DEV MGR
 
WS-C3750X-12S-E (Catalyst 3750X 12 Port GE SFP IP Services)
C3KX-NM-10G
S375XVK9T-12255SE
CAT 3750X IOS UNIVERSAL WITH WEB BASE DEV MGR

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Cisco Switching/Routing :: Use WS-C3750X-12S-S And WS-C3750X-24T-S In A Stack?

Jan 8, 2012

Can we use WS-C3750X-12S-S and WS-C3750X-24T-S in a single stack?

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Cisco Switching/Routing :: C4500 - UDLD Normal / Aggressive With Multiple Neighbors

Aug 20, 2012

we're running 4 c4500 Switches at 2 sites connected to each other via Layer-2 crypto boxes and VPLS in a point-to-multipoint configuration which ist completely transparent (it's more or less like connecting them via a Hub - every switch sees the other 3 ones as neighbors). Our basic configs have udld globally enabled in aggressive mode. I wanted to disable that for the interfaces (routed ports) to the crypto boxes, because I don't want them in ErrDisabled for 5 minutes if there are connectivity problems in the VPLS-cloud (every switch also had 3 UDLD neighbors because of the P2MP configuration). In if-config mode I could do this simply with "udld port disable", but I thougt it would be better to run normal mode (not aggressive) to have the chance to use the UDLD show-commands. So I configured "udld port" for the affected interfaces.
 
interface GigabitEthernet1/2
udld port
!

[Code].....

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Cisco Switching/Routing :: ME 3400 - VTP Support

Sep 13, 2010

We purchased ME 3400 switch and trying to implement it. But its quite surprising in the ME3400 configuration guide that the switch does not support VTP. When I checked in Feature navigator under feature "VTP" i could see ME3400 supports VTP. But when i get into CLI of ME3400, i am not getting any option of configuring VTP. I could see in some sites VMPS is supported in ME3400.
 
I would like to confirm the following: 
1. Does VTP support present in ME3400 or not? If not, what would be the reason that it is not included in ME3400.
2. If not what is the alternative.
 
Network is already running VTP of around 30 switches.

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Cisco Switching/Routing :: ME 3400 - DHCP Snooping

Sep 27, 2012

I have a problem at a place where 5 ME3400 switches are connected in a straight line. I can't do much about the topology of that place, but the problem is they are all DHCP Snooping, but uni cast replies from the dhcp server further up the hierarchy gets eaten by the first switch! I can't really see why it not only inspects in and whines about it not being for itself - it then drops the message.
 
What have we done wrong (apart from the actual layout of that place, which I can't really change)?
 
Sep 28 13:49:29: DHCP_SNOOPING: received new DHCP packet from input interface (GigabitEthernet0/1)
Sep 28 13:49:29: DHCP_SNOOPING: process new DHCP packet, message type: DHCPOFFER, input interface: Gi0/1, MAC da: 7444.012d.debd, MAC sa: 0013.1a4a.65c7, IP da: XX.YY.186.7, IP sa: XX.YY.186.1, DHCP ciaddr: 0.0.0.0, DHCP yiaddr: XX.YY.186.7, DHCP siaddr: 0.0.0.0, DHCP giaddr: 0.0.0.0, DHCP chaddr: 7444.012d.debd
Sep 28 13:49:29: DHCP_SNOOPING: binary dump of option 82, length: 20 data:
[Code] ......
 
It really should just send it on, as with any uni cast not on the switch itself - it should go out Gi0/2 really. Why isn't it?
 
[core] -- [sw1] -- [sw2] -- [sw3] -- [sw4] -- [sw5]
 
All the trunks are trusted, DAI is on (I've tried shutting it off, as well), port-security is used but it's actually not dying on the switch having the client computer, but the first one in the chain with dhcp snooping. 

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Cisco Switching/Routing :: Configure CFM In ME 3400 E Series Switch?

May 13, 2012

We are using cisco ME 3400 E series switch. Which port we can use as CFM port ? We configured CFM in gig port.Is all the ports will act as CFM port or any separate CLI command is there for enable ?

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Cisco Switching/Routing :: ME 3400 Series Bandwidth Control?

Dec 19, 2012

I`m searching about bandwidth control down and upstream with vlans, i found many options but no one works good, follow some examples i have found on the internet

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Cisco Switching/Routing :: Switching Fabric And Forwarding Rate C3750x

Aug 6, 2012

It is said that the switching fabric of WS-C3750X-24T-E is 160Gbps.Could any body tell me what is switching fabric, any relevance or difference from forwarding rate?,Is there any document to know how will the switch reach the 160Gbps full switching fabric performance?

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Cisco Switching/Routing :: 3750x Stack - EIGRP Stub With Non-stub Neighbors

Sep 16, 2012

we have 5 sites connected with a combination of direct fiber and Service Provider Ethernet. The equipmet consists of 3750 stacks with IP Services. Currently each site runs full EIGRP and is a EIGRP neightbor to all the other sites. Everything is working fine right now.
 
We would like to upgrade the R5 site to a 3750x stack with IP Base (cheaper than IP Services) and configure it as EIGRP Stub. My concern is with the following statement in the IOS command reference guide. 

Note Multi-access interfaces, such as ATM, Ethernet, Frame Relay, ISDN PRI, and X.25, are supported by the EIGRP Stub Routing feature only when all routers on that interface, except the hub, are configured as stub routers.   

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Cisco Switching/Routing :: High CPU In WS-C3750X-48

Nov 7, 2011

Currently, my Cisco 3750x (2 switches stacking) is having very hight CPU. Below are some of the output :
 
3750-ANA#sh processes cpu sorted | ex 0.00
CPU utilization for five seconds: 55%/30%; one minute: 55%; five minutes: 55%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process

[Code]....

I am not sure what is using CPU to go up like this. I had tried some troubleshooting guide on Cisco web site like "Troubleshooting high CPU Utilization"

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Cisco Switching/Routing :: Does WS-C3750X-24S-S Support GLBP

Dec 28, 2011

I would like to ask you that switch WS-C3750x-24S-S can support with GLBP?i have IOS version : S375xvk9t-12258SE. 

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Cisco Switching/Routing :: WS-C3750X-48T-S - No Shutdown / Not Working

Jan 5, 2013

I'm experiencing strange issue with my WS-C3750X-48T-S.

Model number: WS-C3750X-48T-S
System image file is "flash:/c3750e-universalk9-mz.122-55.SE3/c3750e-universalk9-mz.122-55.SE3.bin"
  
This switch is situated on a remote site and on the 6th of January it was rebooted.
I still do not know the cause, but it might be power outage or smth. We are still checking. After the reboot I've noticed that one port on this cisco switch is in 'notconnect' state, while I'm pretty sure it should be 'connected'.
 
I've tried to shutdown the port adminstratevly and do the 'no shutdown' but this port remained in 'disable' state. 
 
#sh run interface Gi1/0/5
Building configuration...
!
interface GigabitEthernet1/0/5

[Code].....

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Cisco Switching/Routing :: C3750X-24S-E As Core In A L2 Network

Nov 24, 2011

I want to deploy the C3750X 24-port SFP switch as the core switch in a large Layer 2 switching domain.The switch will need to run:
 
+/- only 10 large VLANs, 6 VLANs with HSRP
+/- 500 MACs total
+/- 5 OSPF sessions default timers

standard PVST+ (no Rapid PVST+)i need around 27 SFP ports (24 + 4 on network module=28=ok, extra capacity by stacking)
 
Looking at the switching capacity of the specs (160 Gbps) this is much better than a C6500 with SUP32-GE !Will it be able to handle this or should i look for C6500+SUP32GE or C6500-SUP720 or maybe even C4500 ?

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Cisco Switching/Routing :: WS-C3750X-48PF-S CPU Utilization

Feb 12, 2012

First of all I purchased the switches with part no. WS-C3750X-48P with the following IOS c3750e-universalk9-mz.150-1.SE1 & IOS feature license to work as ipservice.
Symptoms:

1)      - When running the switches in stack mode (connecting the booth switch with full-duplex stack) I found the cpu utilization on each switch reached to 34% The Hulc LED Process reaches to 20%

3)      - After about 1 hour  with no connections to the switch I found the status not changed.

4)      - I tried to run each switch in stand-alone mode (without stack cables connected) & monitor the status of the cpu utilization. I found it the same problem exist. Actions taken:

1)      - Refereeing  to the internet I found a bug ID describing the status of the mentioned symptoms (attached)

2)      -  I made a down grade for the IOS version to be  c3750e-universalk9-mz.122-58.SE2.bin

3)      -  The mentioned IOS solved the Hulc LED Process (became 1 : 3 % ) & however cpu utilization became 18% with no links or traffic connected to the switches.

4)     - I guess that 18 % utilization is too much for a free switch (refer to the show run file) as I did not configure any advanced commands.

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Cisco Switching/Routing :: C3750x-48P-E Stack Switch Best IOS

Mar 27, 2013

Which is the best and advanced IOS for c3750x-48P-E stack switch among below listed IOS.
 
c3750e-universalk9-mz.122-58.SE2 ?
or
c3750e-universalk9-mz.122-55.SE6..??

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Cisco Switching/Routing :: Stack Compatibility With WS-C3750X-12S?

Dec 18, 2011

Can a WS-C3750X-12S coexist in an existing stack made up of a WS-C3750G-12S and a WS-C3750G-24TS?

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Cisco Switching/Routing :: 3750 - ME3600X Vs WS-C3750X-24S-S

Apr 16, 2012

I'm looking for a 24-port SFP switch. Each of the two switches in the subject meets that requirement.  If I went with the ME switch over the 3750 (at about half the cost), what features/functionality if any, would I be giving up?

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Cisco Switching/Routing :: C3750X Web Interface Missing

Jun 3, 2012

I just loaded the web interface IOS on a C3750X.  The first thing I noticed was there was basically no web interface.  I can look at things, and do default configurations on ports, but it doesn't appear I can configure VLANs or QoS or anything like that.
 
Am I missing something, or is this just how the web interface functions?

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Cisco Switching/Routing :: C3KX-PWR-1100WAC / WS-C3750X-24P-S - Compatibility

Mar 5, 2012

Is the C3KX-PWR-1100WAC= compatible with the WS-C3750X-24P-S?

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Cisco Switching/Routing :: Replacing WS-3750-48p With WS-C3750X-48PF-S?

Mar 10, 2013

In my MDF I have a 4stack of the WS-3750-48P switches. Is it possible to replace one with a C3750X48PF-S with out causing any issues? Or would it be better to just have 3 stacked and trunk this one to the core 4506. Keeping in mind I bought this one to expand the port number for one of our remote offices.. I would hate to send them the gig switch when there isn't as much usage..Besides if I can get my CFO on this switch he might authorize me to replace the rest... He is reticent to believe it makes really all that much of a difference.

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Cisco Switching/Routing :: Can Stack (ws-c3750G-12s) With (ws-c3750X-24p-poe-s) With (ws-c3750-48p-10/100 Poe)

Feb 3, 2012

can i stack cisco (ws-c3750G-12s) with (ws-c3750X-24p-poe-s) with (ws-c3750-48p-10/100 poe) i mean even a switch is 10/100 and the other switch is 10/100/1000?

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Cisco Switching/Routing :: C3750X - Power Stack Configuration

Oct 26, 2011

Any issues are reported while configuring power stack ? We did several times with 12.2.58SE1 and SE2, sometimes the power stack is created automatically, sometimes needs to be configured manually. Looks like the behavior is not the same. Maybe it depends on the number/type of switches and number/type of power supplies.

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Cisco Switching/Routing :: C3KX-PWR-440WDC On Catalyst WS-C3750X-24T-S

Oct 2, 2012

I have a Catalyst WS-C3750X-24T-S with two power supply C3KX-PWR-440WDC, each of these power supply have two input to deliver 440 W, my question is: Can I use only one Input in each power supply to power up the switch?, I know that I dont going to get the total power of 440W, but the power delivers by the supply with one input circuit is enough to power up the switch condidering that the switch are not PoE and only have 24 ports?.

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Cisco Switching/Routing :: Stacking WS-C3750X-24P With WS-C3750G-24PS?

Dec 10, 2011

I'm having trouble stacking a new WS-C3750X-24P with existing switches WS-C3750G-24PS ?I can see the license is on the  new WS-C3750X-24P:
 
 switch#sho lic
Index 1 Feature: ipservices
Period left: 8  weeks 4  days
License Type: Evaluation
License State: Active, Not in Use, EULA not accepted
License Priority: None

[code].....
 
I could put on the c3750e-ipbasek9-mz.122-55.SE1 image, but I may need to get the license sorted still, but not sure if that will work or how to add it if i got one.....

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Cisco Switching/Routing :: C3750X-24S Two Switches Never Associate With Firewall

Jan 27, 2013

We have a new backbone in our LAN with two C3750X-24S 15.0(1)SE3. Since we change the model of our equipment we can't update NTP on this two switches.We try to update NTP with two firewall Juniper SSG-140 in version 6.3.0r12.0. The two switchs never arive to associate with firewall (we try with the comme ntp server and ntp peer)
 
So we configure ntp server on our distribution servers switchs (one 4900 12.2(54)SG and one stack of 3750G and 3750E 12.2(50)SE5). They have no problem to update NTP on the firewal.So we change our configuration ntp server on the backbone and we try to update it with the distributions servers switchs. With the command ntp server it doesn't work. With the commande ntp peer it works but not everytime. The core switchs are in "synchronized" state then "unsynchronized" then "synchronized" etc...When they are in "unsynchronized" state there is "x falseticker" raison behind the IP of the ntp peer.

Is it an IOS version problem on our core switch?

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Cisco Switching/Routing :: WS-C3750X-48PF-S Connection With HP DL380 Gen8

Dec 4, 2012

I would like to connect a DL380Gen8 to a Cisco 3750X using 10G.
 
On  HP side, i have a Ethernet 10Gb 2-port 530FLR-SFP+ Adapter (without any  SFP) and a WS-C3750X-48PF-S + a C3KX-NM-10G= module (without SFP).
 
What kind of cable and/or SFP are suitable to connect everything together ?

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Cisco Switching/Routing :: WS-C3750X-48 Dscp Removed On Router Port

May 26, 2013

I have a problem with dscp preservation on a WS-C3750X-48 catalyst; in my little diagram, his name will be SW2, so I have this:SW1 <-> SW2 <-> RT1. some phone connected to SW1 mark with dscp EF (46) the voice traffic.The "mls qos" was enabled on SW1 and SWt. The interlink switch ports has the "mls qos trust dscp" option, the phone port and the router port also.And the problem is I can see the dscp marking on the SW2 when I span the voice vlan on this switch but the dscp was removed ( DSCP set to 0) on the router port ( span on the router port for look )If I made also a packet capture on the router RT1, I see the DSCP was effectively reset to zero.If I disable the "mls qos" on SW2, of course all is fine and the dscp was preserved and forwarded to the router. [code]

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Cisco Switching/Routing :: C3750X Stack Power Cables End Colors

Oct 26, 2011

Does the color strips on C3750X stack power cables mean anything, I mean the green and yellow ones. On all Cisco pictures the green one seems to be plugged in the upper ports. I asked local Cisco representative, but he seems not to be sure. We tried to try different scenarios, and it looks like it does not matter what cable end we use. We do not have any external power supply, only interconnecting C3750Xs.

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Cisco Switching/Routing :: Old WS-C3750G-48TS Works With New Replacement (WS-C3750X-48T-E)

Aug 12, 2012

Situation: Currently WS-C3750G-48TS-(S or E) switches are on stack. Now these units will soon EOL on Jan. 30, 2013 and Cisco recommends that
WS-C3750X-48T-S or WS-C3750X-48T-E will be used.
  
The question is: Will the new SKU works together in a stack with the old ones?  Will there be no changes on the type of stacking cable to be used?

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