Cisco Switching/Routing :: Moving Routing From Perimeter Router To 3750x?

Dec 9, 2012

I have an 1811 with several subnets connected to it.I recently installed a 3750x plant and want to bring my interior routing back to it.
 
All the routing is handled by the 1811 via secondary interfaces on vlan1?
 
I have 192 ports, and subnets show up on almost all of them.  None of the ports are assigned to any specific vlans.  Most ports have several subnets on them.
 
What is the best approach to getting the 3750x to handle the routing?

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Cisco Switching/Routing :: WSPE150 Moving IOS Image From One Router To Another

Jan 8, 2012

Customer has ordered the following routers, which will go in three separate locations.
 
1.  3945 W/SPE150, IP Base Image
2.  3945 Voice Bundle, includes PVDM3-64 and (1) 2-port T1 MFT
3.  2911 IP Base Image.
 
If the customer wants to move the Voice image from  the existing 3945 to the 3945/WSPE150, would he just need to contact Cisco Licensing, or would the customer have to pay for a software upgrade on the 3945/WSPE150?
 
Same scenario, except moving the Voice Image to the 2911 router.

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Cisco Switching/Routing :: SNA When Moving To New Virtual Environment

Mar 4, 2013

Today, we have a server running SNA that connects to router via the following.  Vitrual Server --> Nexus 1000v ---->Nexus 7010 ---->2800 series router.We are trying to move server to new environment  where it is  Virtual Server ----> Nexus 1000v ----- Fabric Interconnect-----Nexus 55xx-----Nexus 7010-----2800 router.

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Cisco Switching/Routing :: Moving Line Cards On 4510R-E?

Apr 2, 2013

We need to move some line cards around on our 4510.  The top slots have a 24Gbps backplane while the lower slots are limited to 6Gbps.  Poor planning on our part has left us with installing a 10Gb line card in one of the bottom slots.  I'd like to move a couple of the cards up top, to the bottom.
 
My question is simply will the switch magically preserve the configuration for those cards and change the slot number for me or will I need to reconfigure the interfaces for those cards I move?

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Cisco Switching/Routing :: Hot Moving Master In 3750 Stack

Jan 30, 2013

I would like to know if it's possible to change a master in a 3750 stack without rebooting it?I searched in Cisco documentation, in the forum, and I googled it but I didn't find anything.

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Cisco Switching/Routing :: 3560 - Moving From VTP Server / Client To VTP Transparent

May 1, 2013

We are moving a small network of 3560 and 3750X switches from VTP Server and Client to VTP Transparent. I noticed the vlan database is stored differently depending on the VTP mode.
 
Is there any chance of losing vlan database on a given switch when moving from Server or Client to Transparent?

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Cisco Switching/Routing :: 6513 Moving LACP Ports To Another Module

Mar 20, 2012

I have a Cisco 6513 switches connected to HP VC Flex 10 Module.  The (2) 10Gb ports on a Cisco Switch connected to VC Flex-10 in LACP mode.
 
I need to move those (2) 10Gb ports on Cisco Switch 10Gb Module to a different 10Gb module on a same Switch without bringing the ports down since it is a live environment.
 
What I would do is to configure a same port channel ID on a new 10Gb module and then move port one by one. unplug one port and connect to the new port on a module. While I will be unplugging the first port the other active port will keep sending traffic and as soon as I plug in on another port, both ports will be active.

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Cisco Switching/Routing :: 3750X Static Routing When Running LAN Base?

Dec 27, 2012

I have a stack of 2 x 3750X switches these are running 12.2(55)SE5. I needed to add some static IP routes and found that the ‘ip routing’ command is not supported. I came across a document that stated “On switches running the LAN base feature, static routing on VLANs is supported only with Cisco IOS Release 12.2(58)SE and later.” So I have upgraded to 12.2(58)SE2, but ‘ip routing’ is still not a valid command.
 
The release notes state:“On the Cisco Catalyst 3560-X and 3750-X Series, it adds support for 16 static IPv4 routes in the LAN Base image.”
 
I have read other posts that talk about running the ‘sdm prefer routing’ command which I have done, but I am still unable to add any routes or run the ‘ip routing’ command.

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Cisco Switching/Routing :: InterVLAN Routing On Switch 3750X?

May 22, 2013

my company pay a switch 3750 X. WS-C3750X-24T-E. It uses IP services basically but I failed to configure InterVLAN routing. why interVLAN routing doesn't work on my switch?

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Cisco Switching/Routing :: Routing Between Vlans On 3750x

Jan 24, 2013

I am setting up a vm environment for a customer in my lab off site. I have two stacked 3750-x switches, a san, and threes UCS c220 M3S servers for hosts. I am trying to separate the lan traffic, san iscsi traffic, and san management traffic using vlans. The problem is i'm unable to communicate cross vlan with my current config, which I have attached to this post. The only noteworthy things in my conifg is that the ip route 0.0.0.0 0.0.0.0 192.168.83.6 is referring to a switch stack they have on site, that I will connect this stack to using the first two trunk ports on each switch, that I do not have here in the lab. I don't want to cause any confusion in why I have things set a certain way.

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Cisco Switching/Routing :: 3750X - Application Not Working (Switch / Router IP As Gateway)

Nov 12, 2012

In change network topology, we are going to assign PC's Gateway as Switch (3750X) IP Address rather than server IP Address. Currently we have configured all Sytems's Gateway is Internet Server IP Address which we are going to replace with Switch IP as Gateway. [code]
 
Issue is while connecting specific application like team viewer in which application tried to send keep alive message to the live server and in case of switch/router IP as gateway. Connection doesn't established. However it is working fine when Internet Server IP treated as gateway.

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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 :: 3560x Or 3750x For Core Switching?

Mar 6, 2013

i cant find any difference in these two devices when i am trying to compare throughput.I need upgrade our new POP and there will be around 4900 MAC adresses in VLAN 150 and 130 MAC adresses in vlan 200.Uplink is 1 gig routed internet connection and there is 14 downlinks to separate villages.i found a few differences for eg stack interface on 3750x but i dont need it.  

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Cisco Switching/Routing :: 3750x 12s Says That It Is Not Supported In CNA

Mar 28, 2012

Why does my 3750x-12s switch say it's not supported in CNA??? I upgraded to CNA 5.7.1 and still says unsupported. This device is supported or I'm just missing something.I use CNA heavily to manage our MANY vlans.

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Cisco Switching/Routing :: 3750X Cannot Create A Vrf

Mar 4, 2013

I want to confirm this is a licensing issue. On a 3750X with ipbase, I cannot create a vrf. So I would need the universal image, and that is a seperate license, correct?Is there a link that describes the difference bewteen ipbase and univeral images?

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Cisco Switching/Routing :: 3750X Did Not Have NAT Feature

May 22, 2013

I have a query regarding attached Network Design
 
PC---2960---3750(One Routed Port and All Switched Port)------------------------ 3750(One Routed Port and All Switched Port)-----2960------Internet
 
I have many Vlans on left side of image , Right Side of Image is having internet connection via Modem, and local connectivity between VLAN works fine but Other Vlans Except Vlan1 is able to Access Internet.Note that 3750X did  not have NAT Feature ,How should I able to get Internet on Other Vlans (10,20)

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Cisco Switching/Routing :: How To Know Whether QoS Work On 3750X Or Not

Jan 5, 2013

scenario A
 
A site .
PBX  --->
Data ---> other brand router ----> 3750X  ---> wan

[Code]....

How to know whether QoS work on the 3750X or not ? Is it correct about the config in scenario A ?

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Cisco Switching/Routing :: 3750x - High CPU Log

Feb 3, 2013

I have a one question. I am using Cat3750x-48 switch. Suddenly it has occurred following high CPU log message in Cat3750x-48 switch.
 
%SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 62%/0%, Top 3 processes(Pid/Util): 162/40%, 156/10%, 74/1%
 
What is meaning of PID 162 ?

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Cisco Switching/Routing :: Stacking With 3750X?

Jan 1, 2013

There seems to be a lot of conflicting information on what can and can't stack together in the 3750X range.
 
I know that LAN Base can only stack with other LAN Base switches.
 
Can IP Base stack with IP services in 3750X? I have also heard that the 15.x.x IOS restricts mixed feature set stacks?
 
I know that Cisco recommends that all switches in a stack have the same IOS and feature set but having all IP Services in a stack can get too expensive.

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Cisco Switching/Routing :: QoS On 3750X Stack

May 7, 2013

I'm trying to review a QoS setup, and I'd like to make sure I fully understand the current setup before I change anything. I'm seeing output drops on two different queue-thresholds, but not sure how packets are making it to one of the queues.
 
Switch Version
CORE#show ver
Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 15.0(2)SE, RELEASE SOFTWARE (fc1)
System image file is "flash:/c3750e-universalk9-mz.150-2.SE/c3750e-universalk9-mz.150-2.SE.bin"
cisco WS-C3750X-24 (PowerPC405) processor (revision A0) with 262144K bytes of memory.
Switch Ports Model              SW Version(code)

I can find queue4-threshold3 in the mappings, but how are packets getting mapped to queue2-threshold1? The priority queue is disabled for this interface, so I'm not sure how this queue is dropping packets, according to the maps nothing is mapped to 02-01.

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Cisco Switching/Routing :: 3750X Power Needs For PoE

Mar 21, 2013

I am building a switch stack using 4 48 port 3750X switches that will also have the power stacked.  If I install a single 715W power supply in each switch will the stack support 802.3af accross all 48 ports on each switch?  My calculations are 48 ports x 15.4W which gives me almost 740W needed which is over hte 715W power supply.  I was reading somewhere were it mentioned that in a powerstack additional power can be drawn from the stack.  I know this will not work if you are trying to support power on all switches accross all ports but would it if say 2 of the 4 switches are needing to provide PoE accross all 48 ports?  If I say we can only use 24 ports per switch for PoE that drops the power need down to 370W which I believe should work.  Just trying to get a better understanding of PoE consumption.  Would the best solution be to just add a second power supply to each switch?

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Cisco Switching/Routing :: 3750x Rebooting Itself Randomly?

Nov 24, 2012

I have a switch which is rebooting it self, we bought it a year back,its a new switch, i did not find any error on sh ver after rebooting. I am using OP manager, i did not receive any alerts. I have done all diagnostic test, all are passed, i did not find any problem..

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Cisco Switching/Routing :: Cant Create VRFs On A 3750X?

Mar 1, 2013

I am having an odd issue on a couple of new 3750X switches.I am trying to configure VRF-lite and it is not recoginizing the command.Does that make any sense? I have goggled the syntax ans it should be right.

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Cisco Switching/Routing :: L2 Vs L3 Between 1002 And 3750X Core?

Feb 4, 2013

we are replacing network equipment at one of our sites. The network will have 12, 3750X switches(6 stacks) - one stack will be the core. A 1002 will be the WAN router to the Main campus. The 1002 will connect to the core via 2 ethernet cables. I'm debating whether to use L3 or L2 between the router and Core. I've heard that routing is more efficient if L3 is used and also I will be able to create an L3 etherchannel  between the 1002 and Core switch. See the attached doc.

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Cisco Switching/Routing :: CPU Spikes On 3750X Stack

Mar 7, 2013

This 3750X stack (3 members) has some 100% cpu spikes. Is this bad enough to start tracking down the cause(s) or is this somewhat typical and not a reason for concern? I just took this reading. How can you detemine when the 100% and 80% spikes occurred? 
 
 2222233333333332222222222444442222222223333322222222222222
7777733333333338888888888000007777777770000077777888887777
100     

[Code].....

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Cisco Switching/Routing :: 3750X And 3750 Stacking Together

Nov 1, 2012

I have two WS-C3750-48PS-S switches and I need to add two more.  The new part number I am looking at is WS-C3750X-48P-S will these all stack together ?

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Cisco Switching/Routing :: 3750X / Restricting Access To A IP

Jan 12, 2013

This is my scenario. I have my IP as 172.16.1.1 (aaaa.bbbb.cccc.dddd) which has full internet access.  Now when i am not available in the office, i noticed some one assigning my IP in to his workstation and gaining full internet access. How do i restrict such things? i.e. even if some one assigning my IP on the network, they shouldnt access LAN or WAN.I tried 'arp 172.16.1.1 aaaa.bbbb.cccc.dddd arpa' configuring on my L3 Cisco 3750X switch assuming i can acheive, but that did not work.

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Cisco Switching/Routing :: 3560X Or 3750X Support GRE?

May 23, 2013

If the 3560 or 3750 "X" series support GRE.I am pretty certain the older 3750-E does not support GRE (both in hardware and software)Was hoping the new super duper X series do. If not, it could get expensive

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Cisco Switching/Routing :: 3750X IP Base IOS Feature Set?

Oct 26, 2011

I have been looking to find out the list of features that the IP Base IOS has for the 3750X series switch.  What would be ideal is a comparable list but essentially I need to know which of the LAN Base/IP Base/IP Services has SSH functionality. 

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Cisco Switching/Routing :: Multicast In A 3750x Stack

Jan 31, 2012

I recently created a stack using (2) 3750x switches. I have three vlans on the stack (1,105,241) Vlan 105 is configured on 6509 core switches with multicasting and are connected to the stack via gigabit fiber. It is working well with clients on the Master or SW1, however clients on SW2 do not participate in multicasting Any client pc that is connected to SW2 vlan 105 does not show up in the "sh ip igmp snooping group" command. I can statically assign a client on SW2 to the mcast groups but but they fail to register on their own. I can take the cable connection from SW2 and plug it into an SW1 Vlan 105 port and it immediately becomes a member of the groups. I can then connect it back to the SW2 port and it disappears from the group membership. IGMP and PIM are configured with the defaults.

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Cisco Switching/Routing :: Upgrade IOS On 3750X-48P-L From LAN Based To IP IOS

Apr 23, 2012

The 3750-12S-S comes with IP based IOS.  I know it is possible to upgrade the IOS on a 3750X-48P-L from LAN based to IP based IOS.  However, can the IOS on the 12-S be downgraded to the LAN based IOS?

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Cisco Switching/Routing :: VLAN Flapping In 3750x

Sep 22, 2011

I recently upgraded my network to have two 3750x core, one interface on the cisco is connecting to a Netgear switch via a fiber converter. I am keep getting the vlan flapping error message in my log as below.

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Cisco Switching/Routing :: 3750x 12.2-55.SE3 IP Base Feature Set?

Sep 9, 2012

Full feature set for IP Base with the 3750x.I just wanted to verify that I could create a routed port, turn ip routing on, and create static routes as well as a default route. From what I can find, there shouldn't be a problem with this on the IP Base Feature Set, I just wanted to verify. Or any link for the Features of IP Base on the 3750x.

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