Solved

Does it make sense to port channel two 1GB interfaces in this scenerio?

Posted on 2008-06-23
5
822 Views
Last Modified: 2008-06-25
Hi experts,

In this scenerio, I need to uplink switch A ( Cisco 4948) to switch B ( Cisco 6513). The interfaces on both switches and the fiber is only 1GB speed. Is there any benefit  to configure a port channel between two gig ports on Switch A to uplink to Switch B?  I mean, the switches can't uplink at 2GB speed anyways, correct?
Switch B is low on Gig interfaces so I'd rather not waste the extra interface to accomodate a port channel if It won't make a difference.
 
0
Comment
Question by:typertec
5 Comments
 
LVL 3

Assisted Solution

by:AugustTen
AugustTen earned 100 total points
ID: 21853824
It depends on the blades you have in the 6513. The X6148 Asic can only support 1Gbps of traffic per EtherChannel, but if you have better blades you will get twice the throughput.
0
 
LVL 50

Assisted Solution

by:Don Johnston
Don Johnston earned 150 total points
ID: 21854488
If you have traffic between the switches from multiple devices, then yes, there will be a benefit since some of the traffic (hopefully, about 50%) will be crossing one physical link and the remaining traffic on the other.
0
 

Author Comment

by:typertec
ID: 21858499
AUGUSTTEN, what if we have the WS-X6516-GE-TX line cards? Are they rate limited at 1gb?
0
 
LVL 3

Expert Comment

by:AugustTen
ID: 21863511
I don't think 6516 have the same problem.

You should see a warning message on the console when you enable the port-channel if they have this restriction.
0
 
LVL 32

Accepted Solution

by:
harbor235 earned 250 total points
ID: 21865220
Etherchannel gives you several benfits, first high availability, two links in a bundle will continue
to operate if one link fails. So etherchannel reduces your failure domain helping you achieve better availibity numbers. Second, perfromance, channeling allows the device to load balance the traffic over multiple links increasing available bandwidth, there is some overhead so its not a 2X situation but its not far off.

harbor235 ;}
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
ethernet cat5e lenght 80m 9 62
Cisco RSTP portfast 3 69
Varsity Logistics Speedwigh and AS/400 issues 18 49
network error 8 49
If you’re like me and you like peace and quiet, saving money, and pretty lights, then this article is for you. For financial reasons, I buy all the Cisco equipment for my home lab second-hand. The first thing to wear out is usually one of the coo…
#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

773 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