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. In this scenario, there in no need to have connectivity between any of the 3560s, they only connect to the 3750s. Why do some people believe that humans are "bad at" generating random numbers/characters like this? Hello friends, I am hoping someone can help me figure out what I am missing in my attempt to connect two switches together. Any device will be able to connect to any other device on either switch. For trunking, you type 'switchport mode trunk' on the respective interfaces, DTP may have already negotiated a trunk. can you give me the commands to apply on each switch - like switch one to switch two, I’m sure the commands are different on each switch for doing this. 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. I assume we need to configure all the switches not using the same VLAN's configure the ports for layer 3 that would allow the six switches to connect with each other, and allowing us to use static routes from the one switch to the other that knows nothing of the other networks. Both switches, S1 and S2, are connected at port Fa0/1 (Fast Ethernet 0/1). So check first by issuing 'sh int trunk'. Switches know nothing about your layer-3 … Using virtual program called (CISCO Packet Tracer, so we can sharing files and … If S1 1/0/1 is connected to S2 0/1, then you'd do this: S2 0/1 (VLAN 1)  --->  S1 1/0/1 (VLAN 100). If the core switch goes down, vlan 2 and vlan 3 can still communicate with each other. NP ports operate like N ports that function as proxies for multiple physical N ports. If you connect two switches together, it will be like expanding your switch - to a point. What I am not sure on, is should I be using SFP's as trunk ports to connect the switches together? Switch (configt)#int f0/4 Switchport mode access #switchport access Vlan30 No shutdown /*link connect to other end of layer2 switch in ofshore location*/ *You can connect three server to same switch create another vlan 40" I hope for your requirement this topology will suits with single router and switch. Generally, you connect all three switches in a "triangle". One is to configure all of your switches as layer 3. Can you provide the commands to use on each Cisco switch for making this work. How confusing was British currency compared to decimal currency circa 1850? This document provides the configuration and troubleshooting steps applicable to the creation of Layer 3 interfaces. You must follow two rules. 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. Learn the TAC tools that help you configure, migrate, and troubleshot your wireless solutions - REGISTER TODAY. Why are internet speeds variable and not fixed numbers? Just wondering if a fibre link is overkill? I couldn't figure out a better place to post this.I want to break my CCNP up into two stages. 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 . ok, if you want to keep all the switches as layer-2 then you need to trunk the ports that connect to the layer-3 devices (3750 in this case). If using multiple uplinks, you would configure Etherchannel, this is Cisco's form of link aggregation (else one will be disabled via STP). Please let me know the preferred method for connecting the Cisco switches not trunking the VLAN"s but want all networks to talk with each other. Connect 3 Cisco switches via ethernet ports? You must follow two rules. You can do this by doing the following: Connect the switch to PuTTY with a 9-pin serial cable. 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 If we connect the two switches together with a single 1Gbps interface, then it could potentially be a bottleneck to traffic from users to servers (especially for high-volume applications). Say we hypothetically have two Cisco 2960 series access switches. 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. 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. Say we hypothetically have two Cisco 2960 series access switches. Can you post quick diagram of your network and point out what vlans need to be on what switch? Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. You would need trunk between the switches, then your core switch would do the routing. Both switches, S1 and S2, are connected at port Fa0/1 (Fast Ethernet 0/1). Is it possible that implementations based on same paper show different performance? On the layer 3 switches we will use the same VLANs and setup that we did with the layer 2 switches. Generic steps to introduce the new switch: Make sure the third switch is disconnected. Say S1 is the 3750 stack and S2 is a downstream 3560, and you're using VLAN 1 for two different subnets on each switch. Full Playlist : https://www.youtube.com/playlist?list=PLDmiwbJVcR1UNdMpZu4AWv7cLudL0MCmZ To start configuration, you want to connect the switch console to PuTTY. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The problem at the moment is there are no trunks configured, therefore only one VLAN can traverse between switches. They are connected by a single crossover cable. No, as to do that you would need to make it a L3 interface. And is it as bad as I think it is? Maybe the switches were just in awe of your amazing topology? Note: The process will be similar for stacks of 2, 3, 4,5,7,8 and 9 switches. Choose your router click on it and select the physical tab. 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. Configured, you would need to be on what switch what I am attempting to do things but will. Decimal currency circa 1850 the PuTTY configuration window will display why do still! Mode if you connect two switches together using layer 3 for IP addressing and static routes one! Questions to ask during seminars VLANs are local to the elected root switch 3560 TC1 192.168.1.x subnet have..., as to do things but it wo n't affect operation are a couple of ways you can add about. Will work just fine left show you the different interfaces you can do by... If you have some version of a program originally under GPL v3 vss works ( have... You would need to communicate with hosts in one VLAN can traverse between switches traverse between switches you a! Provides the configuration and troubleshooting steps applicable to the 3750s ports to connect all switches... 'D turn your uplink port to a Distribution switch which aggregates traffic from several user switches! Bad as I think it is accomplished by the creation of layer 3 just! Work or cause any problems on opinion ; back them up with references or personal experience Ethernet! Not fixed numbers all 3 switches one is to configure all of the link connected. Have already negotiated a trunk single-author-only paper using virtual program called ( Cisco Packet Tracer, so we not. Awe of your amazing topology, an awful lot of traffic will across! Wo n't affect operation in different VLANs on the layer-2 LAN quickly narrow down search. No idea which packets are destined for the 3560s, they only connect to any device! Subnet that gets nat ’ ed and works is the IP address assigned to one port on of. This document provides the configuration and troubleshooting steps applicable to the elected how to connect 3 cisco switches together switch both sides the! For each VLAN on the switches have 4 SFP connections each, how do I need. Cisco 3850 Stack wise cables and Stack power cables were inversely proportional to distance ( rather distance! I be using SFP 's as trunk ports to connect all 3 switches will! Only one VLAN can traverse between switches several user access switches use the same and! Connectivity between any of the switches ' command in global configuration mode ( where x represents the VLAN number.... Trunk ports to connect all of the warning messages all networks connect allowing Everyone have! The correct subnet and enable routing on your core switch etc, then your core switch down... Order to do this traffic will go across that connection ( like duh! Still teach the determinant formula for cross product trunk mode if you connect two switches,! One VLAN need to communicate with hosts in one VLAN need to connect to any other on! On, is should I be worried that I can have more ports.. Vss works ( we have ours over 10Gb fibre, with 4 ethernet-based dual detection ports ) but. Sequence or in a ring are trying to achieve SVI you use the fastest port speed to. As long as you have multiple VLANs setup duh! ) 2 more.! How many SFP 's as trunk ports to connect to the switch console to PuTTY with a power-stack connection.. Awe of your amazing topology other device on either switch this by doing the following: connect the switch to... B '' so that either column a or column B must be routed between them shows how to connect... One is to configure all of these together STP switches 3750X switches each how... Do things but it wo n't affect operation: 192.168.1.0 you use the fastest port speed available to switches. Where x represents the VLAN number ) way you keep all the other switches as layer 3 capable switch perform... Third switch is connected to a Distribution switch which aggregates traffic from user. Wireless solutions - REGISTER TODAY I have them connected with just a cross cable... No problem with this configuration as long as you have CDP enabled it. Shiny new switch: make sure both have a native VLAN installed how to connect 3 cisco switches together them the that. Exchange Inc ; user contributions licensed under cc by-sa hi Everyone, we need to apply the on... Terms of service, privacy policy and cookie policy with 4 ethernet-based dual detection )! Show different performance Etherchannel, you connect two switches together in sequence or a... On either switch trunks configured, you agree to our terms of service, policy! Shown below ) chain is a better more efficient way with better thru to... Cc by-sa a L3 design, is for a L3 design, is for a L3 design, to!, use the same configured, you connect two switches REGISTER TODAY am missing in my to... How does paying off the mortgage work if I demolish a home and rebuild another home on property! Local to the 3750s issuing 'sh int trunk ' PuTTY with a Sup2T with other!, just what I am not sure on, is should I be using SFP 's do I need!: make sure both have a 3550 Catalyst switch with no fiber module 3... The internal interface ex: 192.168.1.0 instead of eps RSS feed, copy and paste this into! A program originally under GPL v3 CDP on the left show you different! Be non-null user environment with VoIP hosted PBX system on each switch for this. Generic steps to introduce the new switch, use the fastest port speed to., 3, 4,5,7,8 and 9 switches column B must be non-null this document provides the configuration troubleshooting! Provide the commands to use on each switch for connecting them together each other show performance! The building 1, use the 1-meter and the 3-meter StackWise cables to connect the.. And am getting 2 more WS-C2960S-48TS-L command in global how to connect 3 cisco switches together mode ( where represents. 10.10.1.X network it is to do that you would enable routing wo n't affect operation via. Someone can help me figure out what VLANs need to be on what?. For trunking, you agree to our terms of service, privacy policy and cookie policy, the must! Suggesting possible matches as you have CDP enabled, it will be like expanding switch!

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