Cisco Switching/Routing :: 3750X - Basic Configuration
Jul 19, 2012
We currently have 7 Cisco 3524-XL switches (10-12+ yrs old) which are 10/100. We purchased a handful of Cisco 3750X switches to replace them going with the whole stackwise and redundant power supplies. Our current configuration on the old 3524 switches is that they have hardset all the ports on them to 100MB/FULL since devices would auto-neg to 100/Half. Since we're going from 10/100 to 10/100/1000 switches, I want things to auto-neg as I have heard in the past and experienced that things work better when it auto-neg to gigabit. My upper management is afraid since the old switches wouldn't auto-neg correctly that we should hard set all the ports on the new switches, which would be a nightmare since some ports would be hard set to 100/FULL others to 1000/FULL, etc.. We've tested just about all of our devices at auto with the switches and they've all auto-neg to the correct speed. In short, is Auto-Negotiation the way to go with the newer switches or is it still better practice to hard set your ports?
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Jan 1, 2013
First time user of cisco hardware and we just purchased the 4900m catalyst switch. My question is very general. I am simply hoping to network 3 servers together and I do not wish to do any fancy or advanced configuration. Can I simply use the web management interface for network administration and setup? I just downloaded the Catalyst 4500 Series Switch Cisco IOS software configuration guide and they talk about Cisco View network management system, is this my answer or is this what most people use for basic configuration and administration?
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Dec 10, 2012
I have a requirement whereby a CCTV system is being installed that will need multicast RTSP configured on the switch network. How this will be achievable on 3750X IP Services switches? if this is not possible then what switch hardware will be needed?
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May 15, 2012
I would like to know if there an specific configuration in order to apply QoS configuration in Switches 3750X for Polycoms Phones.I was reviewing the information from Cisco but mostly of them apply only for cisco phones, and just some or basic for non cisco phones.
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Jan 28, 2013
when enabling multicasting on layer 3 interfaces the CPU becomes fully utilized , is there any specific configuration should be enabled to reduce this .
Config :
Inetface vlan 100
ip pim sparse-dense
ip igmp version 3
[Code]......
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Jul 6, 2012
I am trying to setup intervlan configuration and stuck on a problem. Here are the details:
1. Switches Catalyst 3750-x (as core switch) and Catalyst 2960S (as access switch)
2. Both switches have VLAN 20 and VLAN 1 on their database and both are active. BTW, after I figure out how to properly configure interVLAN routing the native VLAN 1 will not be used anymore. This is just an initial test.
3. VLAN 20 SVI interface (IP 192.168.20.200) on 3750 is up and can be pinged from catalyst 2960.
4. VLAN 1 SVI interface (IP 192.168.170.200) on 3750 is up and also can be pinged from Catalyst 2960.
5. Catalyst 3670 can ping a client computer (IP 192.168.20.10) connected to Catalyst 2960.
6. IP route enabled on 3750
7. Trunking is enabled on etherchannel connecting both 3750 and 2960
8. Client computer in VLAN 20 (connected to 2960) can ping VLAN 20 SVI interface 192.168.20.200 on switch 3560.But, the client computer in VLAN 20 can not reach any computer in VLAN 1 and vice versa. Strangely, the switches which these computers are connected to can ping each other or any connected client copmuters without any problem as described above.
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Jun 22, 2012
I have on 3750X stack with a few vlan
--------------------------------------------------
vvlansw06# sh vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/6, Gi1/0/10, Gi2/0/5
Gi2/0/6, Gi2/0/37
10 LAN_10 active Gi1/0/16, Gi1/0/17, Gi1/0/19
[code]....
where are the others vlan?
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Oct 24, 2012
I am installing a several new Cisco VM servers. The VM hosts are losing connectivity when we apply the etherchannel config in the core stack. VMware has stated that the etherchannel load balance needs to be src-dst-ip in order for the etherchannel to work.However, my current stack has 2 etherchannels configured to other switches through out the bldg in network closets. The current load balance configuration is src-mac.My question....when I make the change to src-dst-ip, will my network connectivity go down? I saw there was an older article on this that doesnt provide an answer just a work around. Here is the article. [URL].
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Mar 12, 2013
I start configuring Cisco 2821 router for multicast . First short description and attached sheme explanation. Let we say I have small network with 100 users. One router and Cisco switch 3560. Two VLAN’s, one for data another for multicast. Data from internet works fine but now I want to connect multicast servers (or source of more multicast streams) from another subnet. Router have three interfaces.I expect there should be no problems with multicast configuration, but unfortunately it is not like I expect. What I did ?
First step: enable multicast routing
Second step: on both interfaces (Fe 0/1 and Fe 0/2) - ip pim sparse-mode
Third step: configure switch that users are connected to access port in VLAN 222 (temporary to see if multicast work)
When I start VLC on computer nothing happend. If I try to connect computer on same subnet where is source of multicast streams it works fine.What I am doing wrong ? Is there anything about routing ? All subnets are directly connected. RP is not needed if I have one router or ?
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Feb 9, 2012
I am trying to configure the FE8 (WAN port) to connect to the Internet. We're swtiching ISP'ssoon so this router was set up at my office and has since been deployed at the client site. So far it is just plugged in and powered, with a console cable attached but no LAN cabling since this router will replace an existing one using the same addressing (except the WAN settings of course). So for now I am just focused on working on the WAN side since I have the ISP's cable modem attached . I had intiially used CP Express to config the wan port with an IP and mask and the various port forwarding options I intend to use. Now, connected via console cable, I tried pinging the IP of the wan port, which works. Beyond that, can't ping anyting (8.8.8.8 - a Google IP), also can't resovle any DNS names which makes sense with no apparent connectivity. Likely my config is just imcomplete. Nowhere in sh run do I see a Default Gateway, yet this ISP did specify one so I assume I need to enter it. Not sure what's the right way - I get confusing results on searches telling me either to use ip default-gateway or ip default-network. I want to think that it's as simple as entering in the IP but so far I've learned with the IOS that you never do anythign without knowing all the possible implications, which I don't. Also while I am at it, I don't know what I should have for DNS entries. This router will not be a DNS server for any internal systems that function will be managed by the two Windows 2008 R2 DNS machines. The ISP has also provided two IP's for their DNS servers. I thought it would be a simple matter of just adding two entrires via ip name-server command, which I did. So now I have four entries, first the two internal servers (inaccessible currently due to no LAN cabing to this router), and the two ISP servers. Can't ping those either, but again there's no default gateway.
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Sep 23, 2012
Cisco IOS 12.4 Basic check to see if the command "ip nat pool" is available?We have 12.2 basic and I know it is in the 12.4 Advanced and 15.1 Basic versions (too large of a jump in version for management). Our budget is very limited so I am hoping that 12.4 Basic has this command.
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Dec 13, 2011
attached diagram and following is the basic configuration on L3 and L2 switch. Is this configuration sufficient for simple routing?
L3SWITCH:
switch 1 priority 15
switch 2 priority 10
[Code].....
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Apr 13, 2010
I' ve three 4900M switches equipped with the WS-X4920-GB-RJ45 module and the WS-X4908-10GE module. Now I'm started to setup these switches in our lab environment for the first time. They behave a little bit strange in comparison with the C3750 series which I used before and which I will replace by these powerful machines.
I tried to setup these switches to be managed through the management port. I configured IP address, default route in the management vrf, set the source-interface for tftp,ssh,ftp and tacacs to use the management port. Ping using the manangement port was successful. After finishing theses steps I configured the TACACS and AAA settings accordingly the informations I found on CCO. I tested the settings with "test aaa group authentication" command- without success. On my Cisco ACS no request was received and the switch told me he could't reach the tacacs server. Other switches in the same IP subnet are working without failure, so firewall or server should not be the problem.
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Oct 21, 2011
step by step ACS 5.1's basic configuration through CLI?
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Jan 3, 2013
I am struggling to get this working after spending many hours looking at it I am now completely stuck. We are upgrading from a 857W to this 887 VA-M I have some experience of IOS and the 800 series. Our 857W works perfectly using almost the same config. Our situation is that the router will sit in front of our firewall and act essentially as a simple router passing everything through to our Firewall. Nat is done at the Firewall.
We currently have the following configuration that seems to connect the the ISP fine but I cannot connect to the vlan2 port on the switch the firewall cannot connect to he internet or route anything via the Vlan2 port no pings etc.. I am using Fast Ethernet 0 as the Vlan2 port and the rest are V LAN 1 with a local network address to allow me to connect a laptop.
We have a block of static IP addresses, the base of which is assigned to the V LAN 2 interface and used by Dialer 0 as IP Unnumbered. Config below.
4590 out of 262136 bytes
! Last configuration change at 17:42:06 UTC Thu Jan 3 2013
! NVRAM config last updated at 17:43:00 UTC Thu Jan 3 2013
! NVRAM config last updated at 17:43:00 UTC Thu Jan 3 2013
[ code].....
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Sep 30, 2011
I have an ASA running 8.2(2).I am trying to get the network on the inside interface to be able to communicate through the outside interface and on to the internet.
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Sep 4, 2012
I have just bought my first non-domestic router, a CISCO 887VA-K9 which needs basic configuration to get it working. I have a copy of the configuration guide (334 pages) and CP Express user's guide (94 pages) and have spent an hour reading but either they are missing something or my brain is too small to figure out step 1. How to get started. Perhaps from where to download a CP Express installation kit for Windows.
Is the only way via a terminal emulator connected via a serial port ? Is there a graphical interface I can use ? Are there any basic tutorials for beginners ? This is probably the only non-domestic routrer I shall work on so I don't want to invest in a full training course. I just need enough to plug in the ISP credentials and set up DHCP.
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Apr 19, 2011
I am trying to set up my Cisco 520 router with a firewall that will: Allow port 80 traffic to the vlan 20,Block all other incomming ports to vlan 20 (unless initalised from inside),Allow all outgoing ports on vlan 20,Block all access from vlan 20 to vlan 10 (unless initalised from vlan 10)
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May 8, 2011
creating a DMZ with my current configuration. Most of my configuration has been through the ASDM as I am still learning. I'm looking for a good tutorial through the ASDM to get me on my way. What I need to accomplish is this:
I have an internal GIS server which needs to have a constant database connection to an remote GIS Server which is already configured. I've got a separate VLAN setup on my 3750 switch which connects to the DMZ configured port on my ASA with a security level of 50. My GIS server has been placed in the DMZ VLAN which is accessible from my internal clients. I have a /30 Internet block which is being used for Internet and VPN. I have a separate /28 block that I'm assuming I'll need for the DMZ to work properly.
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Oct 12, 2011
I dint have any experience in Using cisco pix firewall. i got this for home lab practice.the pix can be accessed and configured by web based and CLI mode right. basic configuariton tto configure pix 515e in cli mode.
as of now im using console( hyper terminal) to access the pix. in cli based commands i need the following
1. how to assign ip address to inside ethernet and outside ethernet
2. how to enable telnet and after enabling it , can i connect my pc directly to the pix inside ethernet and do telnetting or if at all possible with (https enabled)web based config. any of these are ohk.
went at browsing to find these all i could find is web based configs. i need cli commands.
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May 21, 2012
This is my 1st time trying to configure an ASA.
I'm trying to establish a very basic connection (ping) between 2 laptops, one sat on the outside interface, and one on the inside as per the diagram below:
I can ping back and forth from the ASA to 192.168.1.4, and to 10.1.1.1. However, what I'm trying to achieve is to be able to ping from 10.1.1.1 to 192.168.1.4 and vice versa.
I have attached the configuration file with this post as well.
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Jan 3, 2013
I have an 871 and all I need to do is some basic rules. Here is the config I am having the issue with.
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Dec 13, 2012
in lab trying to run a test upgrade of an Ace30,can seem to get it right ace30 is in slot 1 of the 6500, management vlan 10
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Aug 12, 2012
I set up a basic Linksys E2500 with the following information and connected to the internet straight away without a problem: I have spent several hours simply trying to get this basic information into the Cisco 819 using CP Express without success, i.e. I get no internet. Rather than show my inputs, What is the correct setup. I am a novice so I'd rather solve this issue using CP Express just to get connected in the first instance. I have a static IP address, I connected the ethernet cable carrying the internet to the internet port of the E2500 and an ethernet cable from one of the ethernet ports of the E2500 to my PC. For the 819, I connected the internet cable to the GE WAN 0 port and the PC to one of the FE ports.
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Apr 8, 2012
I teach in a High School and we've got about a 300 node MS Windows Network. Two MS2003 File Servers act as my DNS/WINS/DHCP servers. We have been using a WATCHGUARD FIREBOX III to act as the router/gateway between the outside external address and my internal (10.0.0.1) gateway address. All p.c's inside the network are routed to one of the Servers (10.0.0.2 or 10.0.0.4) for DNS/WINS/DHCP addressing. The servers point to 10.0.0.1 for gateway.
We are trying to replace the Watchguard Firebox with a CISCO ASA 5505 (eventually we'd like to implement VPN). When I connect the CISCO ASA, I get no internet passthrough at all.
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Dec 16, 2011
I have a Cisco 2600 with IOS 12.3. I need a very basic configuration to allow traffic between two LANs. To test this I cleared the router config to the factory default state and configured my network addresses on the interfaces.
When I connected a PC to each interface I found they could ping each other, I was expecting to have to write ACLs to permit the traffic into the interfaces, thinking that the default behaviour of the router would be to deny access. default bahaviour without any ACLs or other routing configurations?
My config, such as it is, is as follows:
Current configuration : 770 bytes
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
[code]....
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Aug 5, 2012
I am trying to configure a Cisco 1841 to allow the users to access the internet. This is my first step with ppp. All the rest of the configuration is ok but I don't know how to setup the interfaces Dialer0 and ATM0/0/0.
Need very basic configuration that I can analyze and use on my device?
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Apr 22, 2012
I am replacing a cisco linksys router with a 1941w.
I have the 0/0 accepting a DHCP from the ISP then I have 0/1 going to a switch and hosting a dhcp server.
Where I have an issue is:
A) Finding a way to turn on the wireless and make it use the same DHCP as wired and setting up a user name/wep password
B) Turning on the GUI that is supposed to be embedded on this.
C) Finding a way to make the DNS point to the default gateway so that I don't have to set the address everytime we move the box.
Here is my current configuration, and with it I can get onto the wired network and get to the internet.
Current configuration : 4712 bytes
!
! No configuration change since last restart
version 15.1
[Code]...
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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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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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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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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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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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