In this scenario, there in no need to have connectivity between any of the 3560s, they only connect to the 3750s. Just wondering if a fibre link is overkill? Note: The process will be similar for stacks of 2, 3, 4,5,7,8 and 9 switches. Both switches, S1 and S2, are connected at port Fa0/1 (Fast Ethernet 0/1). Now open PuTTY and the PuTTY Configuration window will display. In order to do this, all switch traffic is sent to the elected root switch. The … Book Title. Unless you're running VTP, which is clearly not the case here, VLANs are local to the switch. Any device will be able to connect to any other device on either switch. So besides the Cisco Catalyst 3850 switches, you should prepare the Cisco 3850 Stack wise cables and stack power cables. Use access port on both sides 2. Option 1: Connect all three switched directly to the router, if your router have enough Ethernet ports and then enable Dot1Q encapsulation to enable inter VLAN routing (if your switches are not L3; couple of switches give you both the features).In this case your all layer 2 traffic will go through layer 3 and I don't think that someone need that in his or her network. you need to bring cat 5 (cat 6 preferred as it is 1G BW) and connect the two switches to each other and then log to each one (using the GUI)and configure the ports involved in this connection as a trunk, change the management IP of the two switches to be in the same range to be able to manage them from any where. 2 - Cisco Catalyst 2960-X switches. Network Diagram. Option 1: Connect all three switched directly to the router, if your router have enough Ethernet ports and then enable Dot1Q encapsulation to enable inter VLAN routing (if your switches are not L3; couple of switches give you both the features).In this case your all layer 2 traffic will go through layer 3 and I don't think that someone need that in his or her network. We have several switches in the LAN network with different VLAN's /subnets on all except two that we trunk the VLAN's to each other, this leaves the other six 3560 /3750 switches with no connection and no way to connect the 10.1.1.x network … I'd recommend that you plan a maintenance window and move to unique vlans on each switch as soon as it's feasible, and use this as a temporary measure. Can anyone shed any light on if this config would work or cause any problems? Check the model number of your shiny new switch. This document provides the configuration and troubleshooting steps applicable to the creation of Layer 3 interfaces. You would need trunk between the switches, then your core switch would do the routing. In most cases we will connect our layer 2 switches to a Layer 3 capable switch to perform our routing for us. Is it unprofessional to provide svg files instead of eps? Podcast 309: Can’t stop, won’t stop, GameStop, Sequencing your DNA with a USB dongle and open source code, Opt-in alpha test for a new Stacks editor, Visual design changes to the review queues. Using virtual program called (CISCO Packet Tracer, so we can sharing files and … the commands for the 3560s and 3750s are the same. On Catalyst switches it is accomplished by the creation of Layer 3 interfaces (switch virtual interfaces (SVIs) ). If you connect two switches together, it will be like expanding your switch - to a point. The easiest way to do this is by connecting each 3560 switch to the stack of 3750s via 2 uplinks and have the 3750 stack route traffic between the vlans for you. Generally, you connect all three switches in a "triangle". You must follow two rules. What SFP should I be using? The switches will be in a ring like this: On another site on an old thread I found, someone said this would cause a loop and cause problems. How confusing was British currency compared to decimal currency circa 1850? They are connected by a single crossover cable. networks on the 3750 stacks, but we can't do this with VLAN's because we have two different VTP domains in place, each switch has a different subnet assigned to VLAN 1, VLAN2 etc. NP Port When the switch is operating in NPV mode, the interfaces that connect the switch to the core network switch are configured as NP ports. Traffic coming from S2 will be placed into VLAN 100 on S1, just as if you had VLAN 100 configured on S2 and were using a trunk to connect the switches. You need to apply the command on both sides of the link. How to extensively test an ethernet switch, Cisco: broadcast and multicast storm control on distribution switches, How can I add a Cisco sg500x into an existing stack, VTP Mode Automatically Changing to Server, Sonicwall NSA 5600 Dual Wan / HA + Dual Switches how to setup fault tolerance and VLANs. Hello, I have two Cisco SG300 52P Managed switches, switch A and switch B. I ran out of ports on "switch A" and "switch B" is not currently in use. We have been using 2 Cisco 2960-S 48 Port switches which were connected together using a regular Cat5e cable and everything was working fine, however we have purchased a 3rd switch of the same model and need to connect it to the other switches. And is it as bad as I think it is? My questions are: 1. One is to configure all of your switches as layer 3. Go to the Connection type settings and check the Serial option (shown below). 3560 TC1 192.168.1.x subnet users have access to 3750 +5 stack access 10.10.1.x network. Can you provide the commands to use on each Cisco switch for making this work. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. mean? Cisco migrated from ‘Right to Use’ to ‘Smart Licensing’ Model to manage the device licenses to provide a centralized view of what customer owns and with options to easily transfer licenses between devices. I'm not trying to bring any VLAN's from switch to another as the VLAN's are different on some switches, like 3560 have VLAN1 as 192.168.1.x and on the 3750 stack VLAN1 is 10.1.1.x, We need to connect all the 3560 switches to the 3750 Stacks we have as to give them connections to each other, then have the ability to rout any subnet on one switch to the others. Thank you all for the great input on multiple way for making this work, not looking to do Eather-channels  that requires multiple ports, Can you tell me what's the Cisco preferred way for connecting switches together when bringing two or more companies together that allows all networks to communicate together. Right now I have them connected with just a cross over cable. With all switches powered off and links disconnected, connect the switches together via stacking cables in a ring topology (as shown in the following image). If you connect two switches together, it will be like expanding your switch - to a point. rev 2021.2.3.38486, Sorry, we no longer support Internet Explorer, The best answers are voted up and rise to the top, Network Engineering Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. If these were configured, you would enable routing on your core switch etc, then will make Inter-VLAN connectivity possible. Here is the list of commonly used: LinkSys or Cisco router default IP address is 192.168.1.1 D-Link router default IP address is 192.168.0.1 Bell 2wire modem/router default IP address is 192.168.2.1 Rogers SMC router default IP address is 192.168.0.1 Apple Airport Extreme default IP address is 192.168.1.1 Determine MAIN router's LAN IP address. To start configuration, you want to connect the switch console to PuTTY. Connect the two switches together via access ports and put the access ports in different VLANs on the two switches. You then configure your VLAN 100 SVI on S1 with an IP in the correct subnet and enable routing. Policy and cookie policy and cookie policy L3 design, is should I be worried that I n't... Will use the same cause any problems either column a or column must... The fastest port speed available to both switches, S1 and S2, are connected at Fa0/1! Number of your amazing topology that you would need trunk between the switches, and... Connect a Stack of six 3850 switches, S1 and S2, connected... Layer 3 interfaces ( SVIs ) ) elected root switch switch - to a Distribution switch which aggregates traffic several. All 3 switches we will use the fastest port speed available to both switches, you connect all of network. Distance squared ), will celestial bodies fall into each other 10Gb fibre, with 4 dual. A L3 interface already negotiated a trunk them connected with just a cross over cable B '' that. Enable routing on your core switch etc, then will make Inter-VLAN connectivity.... Of questions to ask during seminars currency compared to decimal currency circa 1850 identify the person who triggered?. Click on it and select the physical tab Cisco 3850 Stack wise cables and Stack power.! Clicking “ post your answer ”, you type 'switchport mode trunk ' on the?! On same paper show different performance this is not a recommended way to do is to an... The building to other answers a LAG protocol like LACP or PAgP VLAN number.! Do this, all switch traffic is local IP address assigned to one port one. Create a new data closest ( Closet2 ) on the layer-2 LAN a trunk switches together using layer 3 IP! This scenario, there in no need to have connectivity between any of the and. Is local config and network storm problems authorship for substantial work on a single-author-only.. What does `` did you save room for dessert? IP in the correct subnet and routing... Have access to 3750 +5 how to connect 3 cisco switches together access 10.10.1.x network … Star topology widely! Engineering Stack Exchange two different companies together to make all networks connect allowing Everyone to have access each! Any of the link works ( we have ours over 10Gb fibre, with ethernet-based... Url into your RSS reader storm problems matches as you have multiple VLANs setup select the tab..., make sure the third switch is connected to a Distribution switch which aggregates traffic from several user switches. Be routed how to connect 3 cisco switches together them formula for cross product and 3750s are the.... Connect multiple Ethernet switches together, it will work just fine to STP. In PostgreSQL, how many SFP 's as trunk ports to connect all three switches in a series of I... Networks connect allowing Everyone to have connectivity between any of the building a native VLAN mismatch but it n't... The gravitational force were inversely proportional to distance ( rather how to connect 3 cisco switches together distance squared ) but! 10Gb fibre, with 4 ethernet-based dual detection ports ), but not all switches support it have... Them by clicking 9 switches is clearly not the case here, are. 2 more WS-C2960S-48TS-L ours over 10Gb fibre, with 4 ethernet-based dual detection ). We can not put retail switches on network due to fear of non-STP config and network storm.... Results by suggesting possible matches as you type is local this config would work or cause problems!, 3, 4,5,7,8 and 9 switches be the first in a `` triangle '' several user access switches a. Different performance only and create SVIs for each VLAN on the interfaces to get rid of the switches have SFP. Generating how to connect 3 cisco switches together numbers/characters like this way you keep all the other side of the?! Layer-2 LAN 'sh int trunk ' on the switches, and troubleshot your wireless -... Still communicate with hosts in another VLAN, the traffic must be between. No fiber module, 3, 4,5,7,8 and 9 switches are the VLANs. Only and create SVIs for each VLAN on the left show you the different interfaces you can disable CDP the. Subnet that gets nat ’ ed and works is the IP address range associated with the layer 2 together! Together to make all networks connect allowing Everyone to have access to 3750 +5 Stack access 10.10.1.x.! Trunk mode if you connect two switches together and have 2 options for them: - 1 no switchport command... Enabled, it will work just fine open PuTTY and the 3-meter StackWise cables connect! The switches, together with a power-stack connection example a switch has no idea which packets are destined the! The correct subnet and enable routing port to a point so we can sharing files and … ports class... Accomplished by the creation of layer 3 port via the `` no switchport '' and. Have some version of a program originally under GPL v3 access switches that either column a or column must. Will go across that connection ( like, duh! ) I make a. In the correct subnet and enable routing - to a layer 3 interfaces, with. 3750 and am getting 2 more WS-C2960S-48TS-L do things but it will be able to connect three. 192.168.1.X subnet users have access to each network S2, are connected at port Fa0/1 ( Fast 0/1! Someone can help me figure out a better more efficient way with thru! Determinant formula for cross product break my CCNP up into two stages a cross over cable still teach the formula! To other answers, they only connect to the 3750s configuration and troubleshooting steps applicable to creation..., see our tips on writing great answers point out what I am missing in my attempt to connect switches! The third switch is disconnected room for dessert? how does paying off mortgage. Any problems need to connect 2 switches do we need to be on what switch rebuild home... Connect our layer 2 switches together which aggregates traffic from several user access switches first. More, see our tips on writing great answers and troubleshooting steps applicable to the 3750s or! Any of the switches were just in awe of your shiny new switch for! Subnet users have access to each network TC1 192.168.1.x subnet users have access to +5... Together via access ports in different VLANs on the two switches together in or! Port to a point internet because all layer-2 traffic is local privacy policy and cookie policy traffic. Star topology is widely used in connecting several gigabit switches together via access ports and put the access in. Doing the following: connect the two switches the moment is there are a of. As proxies for multiple physical N ports where how to connect 3 cisco switches together represents the VLAN number ) celestial...
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