Cisco Switching/Routing :: Perform STFTP On 3750 Or 3750-X?

Jun 30, 2012

Do I need the Universal image to perform stftp on a 3750 or 3750-X?

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Cisco Switching/Routing :: Stacking 3750-X With Universal Image With 3750-G Running BIN Image?

Oct 10, 2011

I'm looking at adding a Cisco 3750-X switch running c3750e-universalk9-mz.122-55.SE1 (IP base license) into a stack of 3750-G switches running c3750-ipbasek9-mz.122-55.SE1.bin Given that the version and feature sets are the same I don't forsee any compatibility issues. Would there be any reason why a universal image wouldn't stack correctly with other switches running the single .bin file?

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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 :: Getting Configuration Of 3750?

Mar 19, 2012

i have linksys modem which already running for differents vlans  i cerated another different vlans 10 amd 20 for  10 and 20 i need internet how should i configure internet on another core switch3750

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Cisco Switching/Routing :: Implementing QoS On 3750 Using MQC

Feb 15, 2012

I'm attempting to configure Classification and Marking on our access switches using the MQC model. The Switches are 3750's running IPBase Version 12.2(35)SE. For some reason when I activate the policy-map on an interface, no traffic is being tagged, i've used the 3750 QoS configuration examples (url) for reference.

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Cisco Switching/Routing :: 3750 SVI QoS Not Working?

May 2, 2012

I want to police the traffic coming from host 10.0.0.10 that is connected to another switch via port-channel interface the port-channel have interfaces G2/049 and G2/0/50 , i have applied below config to the SVI 112 but this is not working, as the host  is still able to go beyond the policed rate also in the "sh policy-map interface vlan 112" command everything is showing 0(zero).
 
class-map match-all CM_FTP_PORT_49
match input-interface  GigabitEthernet2/0/49
class-map match-all CM_FTP_PORT_50

[Code]......

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Cisco Switching/Routing :: Set IP Default Next Hop And Cat 3750

Dec 10, 2012

I just checked that PBR with setting ip default next-hop is not available on cat 3750. Any other way to do dual-homing ISP without this feature?

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Cisco Switching/Routing :: 3750-x Won't Power Up

Oct 31, 2012

I recently bought a bunch of cisco 3750-x switches. I configured them all and started deploying them. A day later, some of the switches started failing on me. When I connect the power cord to the AC main, the power supply module on the back shows "AC OK" LED Green but the "PS OK" LED shows Red. I started referring to the installation guide and it told me that "PS OK" LED turns RED when output has failed. Guessing this I checked with another power supply module that was working, but still I get the same LED indicators.The original power supply module works with other switches.IOS crash...?

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Cisco Switching/Routing :: 3750 - Stp With Different Vendor

Oct 26, 2011

I have  cisco3750 (core), 3550,3548, 2960, HP Procurve 2510 series, Extreme e250 series  swiches running in my network. Now all are running by default. How can I  deploy rstp here? Or which is the best loopdetection protocol is best here ? I have aroung 40 vlans . (not looking for PVST )

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Cisco Switching/Routing :: 3750 E And X Could Not Be Stacked

Apr 15, 2012

Im trying to stack 2 3750E-24PD-S and 2 3750X-12S-S. The 2 3750E finds eachother and stacks with one master as they should. The problem is that and the 3750X does the exact same thing instead of joining the 3750E stack.Both runs the same IOS (c3750e-ipbasek9-mz.122-58.SE2).The stackingcables are connected like following atm (I tried booting up the switches one at a time and all at once, no difference in the result).

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Cisco Switching/Routing :: NTP Not Updating 3750

Jan 7, 2013

Last night we upgraded one of our offices 3560 (WS-C3560-24PS) to 12.2(55) SE6.   With these switches, NTP is no longer working.   The NTP server is a router at this office.  Switches at this office that were not upgraded (3750) are getting NTP normally.  Below is a copy of the show ntp association and show ntp status. I have removed the ntp lines from the switch configuration and re-added them, and that has not changed anything.

  address         ref clock     st  when  poll reach  delay  offset    disp
~172.28.119.1     0.0.0.0          16     -    64    0     0.0    0.00  16000.
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (18:00:00.000 CST Thu Dec 31 1899)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.00 msec, peer dispersion is 0.00 msec
 
I enabled NTP debugging for events, packets, and clock synchro.
 
.Jan  8 12:40:20.821 CST:  org D496E694.D23A9C1E (12:40:20.821 CST Tue Jan 8 2013)
.Jan  8 12:40:20.821 CST:  rec D496EA23.CD71F8DD (12:55:31.802 CST Tue Jan 8 2013)
.Jan  8 12:40:20.821 CST:  xmt D496EA23.CD72AD94 (12:55:31.802 CST Tue Jan 8 2013)
.Jan  8 12:40:20.821 CST:  inp D496E694.D2F5B99A (12:40:20.824 CST Tue Jan 8 2013
[Code] .....

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Cisco Switching/Routing :: Most Stable IOS For Cat 3750?

May 17, 2013

what is a good IOS version to stick on a 3750 (normal, no X or G series) switch? This is being used for a Cisco Lab in my CCNP - SWITCH studies.Normaly I referance INE's site though they dont have a 3750 (only 3560) IOS recommendations.

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Cisco Switching/Routing :: Getting RTO While Pinging 3750?

May 29, 2013

I am getting RTO while pinging my L3 switch 3750 that happened after restarting switch,i have restarted it because I am not able to browse internet through URL,i am able to do it trough ip address, so I restarted it not I am getting RTO.

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Cisco Switching/Routing :: NTP Multicast On 3750?

Dec 10, 2012

I have a subnet with a GPS clock on it that connects into a Cisco 3750. The 3750 has another subnet hanging off of it that connects into a firewall then to a server. I need the server to get time from the GPS clock. Any way to pass the NTP through the 3750?  The 3750 has the 3750-IPBase code running on it so the multicast support is limited. I am under regulatory restrictions that only allow traffic to flow from the higher security level (were the time server is) to lower security level (were the server is). This prevents me from having the server go to the clock for updates.

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Cisco Switching/Routing :: 3750 - Low On Memory / Try Again Later

Nov 22, 2011

Today, one of our Cisco 3750 got unmanaged from NOC, we were able to ping the switch, also, traffic was flowing fine but not able to telnet or local login.On trying to login through console following messages were coming:
 
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later

[code].....
 
We given power on reset, after which we were able to login switch again. I wanted to know the actual reason behind it and if there is any other way to recover switch other than power reset.?

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Cisco Switching/Routing :: How To Upgrade 3750-X POE

Mar 24, 2013

I have a situation where I have a 3750-X stack bought with the 350w power supplies. A "show Inv" lists model as "WS-C3750X-48T-L". I now need to suport POE in that space. Is it possible to add in a 1100W power supply and have the switch support POE or is the chassis different and cannot support POE, no matter what PS is installed?

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Cisco Switching/Routing :: 3750 - L2 Trunking Versus L3 Switching

Dec 9, 2011

some of our switches have the switchport mode trunk command configured between the 3750 switches but other 3750 switches connected to our 6509 core switch do not have the switchport mode trunk command to permit Vlans from going across the swtiches instead it has an ip address and says no switchport what is the difference between does two. Is trunking used only for Layer 2 and L3 is used to route  interface vlans?

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Cisco Switching/Routing :: Multiple VLAN Routing Tables For 3750 Catalyst

Oct 24, 2012

I have a network with a Catalyst 3750 as the main switch and then some Catalyst 2960 switches that are plugged in to that. I have a server running windows server 2008 with a couple of virtual machines running in Hyper-V. I created 4 VLANS listed below and gave the 3750 the following IP Address.I would like the 3750 to only be configurable from VLAN 40 but currently every VLAN can connect to it, I noticed in the standard web page settings there was a setting for "Management VLAN" but it was set to 1 and would not let me change it, I kinda assumed that was for the management port in the back.-Now the tricky part, I was trying to set up routing between the VLANs and so far I have only been able to get a sort of "all or nothing" routing to work. I can turn IP routing on and add two or more VLANs to the routing and it works fine. But what I was hoping to do is create a couple of "junction vlans" that would only route to one or two other vlans. For instance, I wanted to create a VLAN 100 that routed to VLAN 20 and 30 but nothing else. I also want to route VLAN 1 just to VLAN 30, and so on. I am able to do each one of the cases but only one, it seems like the switch only supports one "routing table" am I missing something or is this just a limitation of the switch?

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Cisco Switching/Routing :: Is 3750 SW Capable Of Handling Full Routing Tables

Oct 8, 2012

Is a 3750 sw capable of handling full routing tables and what can you recommend in a small mutihomed BGP router or switch capable of handling full routing tables?

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Cisco Switching/Routing :: Catalyst 3750 Multi-cast VLAN Routing

Oct 28, 2012

I have a network with several catalyst 2960 switches and one catalyst 3750. I have created two VLAN and set up the proper routing and everything is working fine there. I have a client/server application that used multicast in the initial start up for the client to determine available servers, the issue is one of my clients is on a different VLAN then the server. I am able to route the multicast using MVR as long as both the server and the client are plugged into the 3750 by creating a static route, making the server a source port and the client a receive port. Unfortunately I need the client and the server plugged in to different 2960s. My question is how do I establish multicast routing between the two and perferably do it dynamically (always route multicast traffic from one VLAN to another).

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Cisco Switching/Routing :: Inter-VLan Routing On Catalyst 3750 Switch

Dec 17, 2011

I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net.
 
My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20
 
I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to  (vlan2)my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to go out to the internet.  I think it has to do with the routes. [code]

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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

[code].....
 
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 Inter Vlan Routing Configuration

Mar 24, 2013

In 3750 switch,I have configured intervlan routing.I have three vlans Vlan 10,vlan 20,Vlan 30 and I have assigned IP address for that Vlan.In vlan 10,I have connected one systen gigabitethernet 0/1 interface.From my system I am able to ping vlan 10 ip address but I can't able to ping other vlan ip address (vlan 20,vlan 30).Is it possible to up the protocol for all that time.

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Cisco Switching/Routing :: IP Routing On 6500 Series Versus 3750?

Jan 24, 2013

For intervlan routing, Is 'IP routing' command enabled by default on a 6500 series switches based on the IOS?and on 3750 switches, do we need to enable the "ip routing" command manually for intervlan routing?

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Cisco Switching/Routing :: InterVlan Routing With 3750 And 2960 Switches?

Nov 21, 2012

I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)

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Cisco Switching/Routing :: Policy Based Routing With 3750 Switches

Oct 17, 2011

I have a simple design with 3750. I configured a route-map which define a next hop. I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR? I think of CEF .

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Cisco Switching/Routing :: How To Configure Policy Based Routing On 3750

Jan 28, 2013

In our datacenter we have a 3750 stack with IP base image.  I have enabled PBR and reloaded the switch.  Show sdm prefer says i am using default template.  The reason i want to use PBR is that we have 2 firewalls on the same work and want to be able to have granular control over which gateway out of the network they use but still be able to access all internal resouces accross wan and locally.

Created access list to identify traffic:
 
access-list 10 permit 10.2.3.59 (test workstation on vlan 3)
 
Created policy:
 
route-map TestASA permit 10
match ip address 10
set ip next-hop 10.2.0.3
 
Assigned policy to the user vlan3:
 
ip policy route-map TestASA
 
Results:It changed the default gateway to the above gateway but i could not access any resources on any other vlan, could not access resouces accross wan. 

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Cisco Switching/Routing :: About Intervlan Routing On Catalyst 3750 Switch

Apr 16, 2012

I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net. My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20,I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to  (vlan2),my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to,go out to the internet.

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Cisco Switching/Routing :: Policy Based Routing And 3750 Switches?

Sep 5, 2012

I have a simple design with 3750.I configured a route-map which define a next hop.I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR?

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Cisco Switching/Routing :: Cannot Reach Gateway Through Routing Switch (3750)

Mar 11, 2012

I'm running into what seems a basic ip routing config problem with a Catalyst 3750 (IP Base) switch. I have several VLANS configured on the switch with IP routing enabled, and the switch is connected to the inside interace of a new ASA 5520 as follows:
 
ASA5520 IP (Default gateway): 192.168.1.1Switchport Gi1/0/1 is configured as a routed port, IP address 192.168.1.3 255.255.255.0Example VLAN is VLAN 100, IP address 192.168.100.1 255.255.252.0 From the switch CLI, I can ping all VLAN addresses, as well as the ASA5520, and the client laptop I'm testing with from VLAN 100.
 
From the client laptop on VLAN 100, I can ping all switch interface and VLAN addresses (inter-VLAN routing is working), including 192.168.1.3, but I CANNOT ping the default gateway at 192.168.1.1.
 
Here is the relevant configuration information on the 3750:
 
!
no aaa new-model
switch 1 provision ws-c3750x-24
system mtu routing 1500

[Code]....

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Cisco Switching/Routing :: Upgrade IOS On 2960 And 3750?

Dec 19, 2012

We are going to upgrade our IOS on our WS-C2960G-48TC-L. But before we do that i want to ask whats the best IOS release to choose. Why we want to upgrade is because our switch software now don't support ssh just telnet access
  
Switch details:
 
Model: WS-C2960G-48TC-L 
SW Version:  12.2(25)SEE2
Image: C2960-LANBASE-M

I was thinking about upgrading the IOS to 12.2(44)SE6 are maybe i should upgrade it to a newer release?
 
One more thing we have a bunch of stacked 3750 switches, that also need to be upgraded.

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Cisco Switching/Routing :: Adding 3750 To Stack?

Dec 6, 2011

I have two  3750s stacked and one 3750 standalone all in one data closet. The both have the same versions. I want to combine them to make one stack. How do I force the standalone to be the master? sw 1 priority XX(Higher then the existing stack)? Both the stack and the standalone have management addresses. Would it be ok to delete the stack ip address? That way, the standalone(master's address will be the only management address)?How should I connect the standalone 3750 to the stack? At present, the 3750 stack is connected via a cascade cable going from the stack 1 port of the top switch to the stack 2 port of the bottom switch.

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Cisco Switching/Routing :: Why Won't 3750 Auto Discover

Jun 6, 2012

I have a 3750 that when a client computer shuts down the switch will not discover it on start-up unless I bounce the switch.  Pretty dependable product so,.... did I miss something in my config? Switch is GBIC'd for Fiber?

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