Solved

connecting multiple Cisco Switches together

Posted on 2014-07-23
5
1,802 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
ID: 40215190
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
ID: 40216082
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
ID: 40216579
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
ID: 40216611
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
ID: 40216618
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

New My Cloud Pro Series - organize everything!

With space to keep virtually everything, the My Cloud Pro Series offers your team the network storage to edit, save and share production files from anywhere with an internet connection. Compatible with both Mac and PC, you're able to protect your content regardless of OS.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Broadband over Power Lines Broadband over Power Lines is the technology of transmitting computer data through power lines. This method of connectivity allows the user to have access to the internet without having to rely on additional cables, suc…
I eventually solved a perplexing problem setting up telnet for a new switch.  I installed a new Cisco WS-03560X-24P switch connected to an existing Cisco 4506 running a WS-X4013-10GE Sup II-Plus. After configuring vlans and trunking,  I could no…
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

910 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

18 Experts available now in Live!

Get 1:1 Help Now