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-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 :: 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.

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 :: 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 :: Calculating Power Requirements For WS-C3750X-48PF-L 

May 3, 2012

I want to chose the right UPS product for 7 x WS-C3750X-48PF-L in one stack. The Cisco data sheet says 1100W AC, however, I am only connecting 20 IP Phones, each phone will consume around 12.2 Watts.
So in this case, How many watts would I need for the whole 7 switches in the stack ?
in other words, only the first switch in the stack will be connected to 20 IP Phones, but the remaining switches in the stack will be Data Only thought the remaining switches in the stack are capable of delivering a full PoE.
the power consumption of the WS-C3750X-48PF-L with only data connected to it.

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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 :: Replacing Two 3750 (stacked) With 3750X

Jun 3, 2013

I was wondering what general steps might be taken in order to "replace two(2) 3750 (stacked) with one (1) 3750X - Server Access". General steps and what I might have to do configuration wise. I know i'm copy pasting the existing configs into the new switch, but are there any caveats?

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Cisco Switching/Routing :: 3825 / Replacing Routing Function With 3750 Switch?

Jul 27, 2012

I have the task of replicating the router config on a 3825 router on a 3750 switch. Reason is we are taking out the router and replacing it with the switch to make use of the router for other functions.
Below is main part of the router config:
ip source-route
ip cef
multilink bundle-name authenticated
license udi pid CISCO3825 sn FCZxxxxxxx
vlan internal allocation policy ascending

The 3750 switch I have runs C3750E-UNIVERSALK9-M, Version 12.2(55)SE3 on a LAN BASE license.
The first thing I have done is to order for a license upgrade to IP BASE which would give the support for OSPF routing.I do not see much of an issue with the Interface configs, however, I am not too sure about replicating the routing config on the switch.
My question is can I run the commands as shown for the OSPF routing on the switch? If not, can I get suggestions on how best to set this up on the switch?

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Cisco Switching/Routing :: 3750 / Replacing Failed Member In Stackwise?

Dec 18, 2012

The stackwise marketing info states that when a failed member is replaced with a new switch the replacement switch "gets the exact configuration of the old device".  I would figure it takes a little more than just disconnecting and connecting a new switch in the same spot on the stack. doing this with 3750 family switches?  What are the steps to prepare the stack for a new member?  what steps need to be taken on the replacement switch before insertion into the stack to make sure it gets configured like the unit it was replacing?

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Cisco Switching/Routing :: Replacing 3750 24 Port With 3750 48 Port?

May 21, 2012

We have a stack of switches that is at the max number of members allowed in the stack. Problem is we are running out of port density and need to add more ports. So instead of adding a whole new stack I would rather replace 2 of the 24-port swicthes with 48-port switches.
If the two 24-port swicthes we are removing are stack members and neither of them are the stack master, I should be able to replace the 24-port switches with the 48-port switches without bringing the master offline? If the new 48-port switches are running the same IOS version as the current 24-port swicthes, they should add themselves to the stack?Would I have to tell the new 48-port swicthes what switch numbers they are replacing in order for them to be added to the stack since we are at the max number of members?Also since the 48-port swicthes are replacing 24-port switches will the master give the 48-port switches the configuration for only the 24-ports?

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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)
WS-C3750X-12S-E (Catalyst 3750X 12 Port GE SFP IP Services)

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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 :: 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 :: 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


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


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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 :: 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 ?

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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 :: 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 :: Replacing Defective Redundant Sup-720

Oct 29, 2011

How to replace a defective redundant sup. I read on several articles that inserting new redundant sup should not be an issue as the active sup will always send its configuation to the standby. We are running SSO on the Sup720. Should I switch it to RPR before I install the redundant sup? I read a case wherein they switched it to RPR from SSO before inserting the new redundant sup. My concern is the IOS mismatch since Cisco doesn't always send the same IOS on RMAs.What I am planning is this.
1. Save/Backup configuration
2. Remove the redundant sup on slot 8 (since it is a 6513)
3. Insert the new redundant sup on slot 8.
4. Check if all the configurations were synced from slot 7 to slot 8.
5. Copy the IOS from sup-bootflash to slavesup-bootflash. (if the IOS are not the same)
6. Check show bootvar to see if the boot variables are correct.
7. If bootvar is the same, reload slot 8 to boot the new IOS.
Is this a good plan or am I missing something? I am worried with this document if the redundant sup has a different software. If i insert the card in slot8, according to Cisco, it will revert to RPR. If slot 8 boots and it has a different OS, then slot 7 will switch to RPR even if it's active. Would I still be able to access the slavesup-bootflash of slot 8? Is it going to boot 100%? I read that doing a force switchover will cause a flip and RPR would cause the line cards to reinitialize and I don't want that. Well I am not going to do a force switchover since i want slot7 to be active and retain slot 8 as hot.

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Cisco Switching/Routing :: Replacing A Backup Sup 720 On 6513

Nov 21, 2011

I am replacing a faulty sup720 on a 6513. It s the backup/hot not the active sup. It has the same IOS on it. Is it correct that all I need to do is remove the faulty and replace it with  the new sup and do a wr mem? Fromwat I have read their should be no down time all connectivity should remain stable?

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Cisco Switching/Routing :: Replacing SUP 6L-E With 7L-E On 4506 Switch

Dec 6, 2012

We have sup engine 6L(WS-X45-SUP6L-E) on two 4506 switch. both switches connected in LAN (HSRP primary and Secondary).
We are going to replace it with Sup7LE. What is the best procedure to get this done with minimal outage?Any other important thing to be noted ? Note : We have Lincence for SUP 7LE

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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 :: 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

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 :: 3750G Replacing VTP Server Switch

Apr 8, 2013

I'm due to replace a stack of 2 x 3750 switches very soon with 2 x 3750Gs.  These 2 current switches are the VTP server for a small domain.  I have put the config on the new switches switches and I made it a server and used the same VTP domain and password etc and got the VLAN info ported over.Now I did this a while back and noticed the switches are in transparent mode with a revision number of 0, I need to set this back to server and swap the switches out but the revision will be lower than the client switches (around rev 200), what do I need to do?

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Cisco Switching/Routing :: Replacing 1841 12.4 Advsec With 1941 15.2M SEC/K9

Jul 2, 2012

I decided recently to switch out our border router (1841 12.4 advsecurity) with a shiny new 1941 (15.2 SEC/K9) as the CPU upgrade was needed.The core below acts as a VPN end point to various other remote offices we have, all of which have a similar network design at each end (and all entirely managed by me). All of these are still running 1841's with 12.4 advsecurity on them as well. These are all GRE tunnels with ipsec procection on them (not crypto maps). [code]
Everything else works fine (NAT, route-maps etc), it's just these IPSEC/isakmp tunnels that are not playing ballIt's definitely not an ARP issue (all arps were cleared) and ICMP appears to work fine (ie, I can ping the remote tunnel's public IP endpoint from the core using the loopback for that tunnel as the source). I am suspecting it's something strange with the stateful firewall config, but I did try and apply ipsec and isakmp-msft to the ip inspect list, with no success.

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Cisco Switching/Routing :: Replacing 2801 With 2911 Router

May 7, 2013

I have a 2801 router that I am replacing with a 2911. I know the ports on the 2911 are Gigabits and the 2801 are Fe. I read where the IOS would not support backup and restore on each other . I am attaching a show ver on both routers. I need to know if backup and restore would work and or what other changes would need to get done.

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Cisco Switching/Routing :: Replacing C4507R-E With Nexus 5548UP?

Jul 25, 2012

We currently have an environment with a 4507 as the core switch connected to four stacks of 3750e's in the wiring closets. A pair of Nexus 5548UP's also hangs off the 4507, but at the moment more or less dedicated to a certain purpose..The 5548UP's have the L3 daughter card installed.
My question is: Can a pair of Nexus 5548UP's do a C4507's job? Would we be able to decomission the 4507 and replace with the existing 5548UP's + FEXes?

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