Solved

connecting multiple Cisco Switches together

Posted on 2014-07-23
5
1,774 Views
Last Modified: 2014-07-28
I have a 3550 Catalyst switch with no fiber module, 3 2960, 1 3750 and am getting 2 more WS-C2960S-48TS-L.  Right now I have them connected with just a cross over cable.  It seems like there is a better more efficient way with better thru put to connect all of these together.   Any suggestions?
0
Comment
Question by:mogurek
  • 2
  • 2
5 Comments
 
LVL 5

Assisted Solution

by:amac81
amac81 earned 250 total points
Comment Utility
All of these switches are auto MDI-X.  You do not need crossover cables.  

If you set one as the central switch you can have them hub and spoke and increase your performance as opposed to daisy chaining them.

If you need more bandwidth, you can use the last two ports on each, create a portchannel and trunk (if necessary) 2GB to the next switch.  Trunking is only necessary if you're using vlan tagging.
0
 
LVL 6

Expert Comment

by:Matt
Comment Utility
Because of the speed and functionality set 3750 as the master switch. Create etherchannel groups (two ports per group) on this switch and connect all othet switches to this "master" switch. On other switches you also need to configure one etherchannel group - to uplink connection to 3750 switch.

This Will create simple but redundant links. Do NOT connect other switches with each other, uplinks strictly using etherchannel to the master switch 3750.
0
 

Author Comment

by:mogurek
Comment Utility
Thanks, how do you create a port channel and what type of cable do you need to do so?  If I went the etherchannel group way how do you do that and what type of cables do I use?
0
 
LVL 6

Accepted Solution

by:
Matt earned 250 total points
Comment Utility
This is example from production environment:


Switch C2960 (48 port, 2 Gigabit uplink ports) - ports Gi0/1 and Gi0/2 are members of EC, they are linked as one logical link, uplink to C3750 as master switch (sw-2n-1, ports Gi0/1/11 and Gi0/1/12)


interface Port-channel1
 description Link->sw-2n-1 EC
 switchport mode trunk
!
interface GigabitEthernet0/1
 description Link->sw-2n-1 EC (Gi1/0/11)
 switchport mode trunk
 channel-protocol lacp
 channel-group 1 mode active
!
interface GigabitEthernet0/2
 description Link->sw-2n-1 EC (Gi1/0/12)
 switchport mode trunk
 channel-protocol lacp
 channel-group 1 mode active
!

Switch C3750 (all gigabit ports):

interface Port-channel6
 description Link->sw-3n-1 EC
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet1/0/11
 description Link->sw-3n-1 EC (Gi0/1)
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-protocol lacp
 channel-group 6 mode active
!
interface GigabitEthernet1/0/12
 description Link->sw-3n-1 EC (Gi0/2)
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-protocol lacp
 channel-group 6 mode active
!

You don't need any special cable, straight UTP CAT 5e Will be acceptable.
0
 
LVL 5

Expert Comment

by:amac81
Comment Utility
Etherchannel and portchannels are the same thing just from a differing perspective.  Etherchannel is the physical connectivity and portchannel is the logical.

Using two straight Cat5e cables will suffice.
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Suggested Solutions

In this tutorial I will show you with short command examples how to obtain a packet footprint of all traffic flowing thru your Juniper device running ScreenOS. I do not know the exact firmware requirement, but I think the fprofile command is availab…
#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

772 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now