Load Balancing - using Static Routes (Urgent Requirement)

Unanswered Question
Feb 28th, 2007

HI All,

Case:1

I have 2 equal cost links from my router for a single destination.

Is it possible to Load Balance using a "Static Route" for these links.

Case:2

I have 2 Unequal Cost Links from my Router for a single destination.

Is it possible to Load Balance using a "Static Route" for these Links.

Note:Kindly give me a Scenario with Cmds Syntax also if possible.

If "Static Route" is not possible means which Routing protocol will help me ! !

Thanks in Advance ! !

Thanks & Regards,

Guru Prasad R

I have this problem too.
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smothuku Wed, 02/28/2007 - 22:21

HI Guru,

BGP is the best protocol for these kind of scenario.

Case 1: It is possible to load balance if you have 2 equal cost paths to destinations using statice routes.

case2: If you want to load balance with 2 unequal cost paths to destination , better use BGP for load balancing the traffic.

check the below link

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094820.shtml

HTH,

Satish

guruprasadr Wed, 02/28/2007 - 22:38

HI Satish,

Can you please given a Example: for Static Route Load balancing Techniq (for equal cost Links to the same destination).

Eg with Syntax if Possible ! !

Awaiting for your earlier updates. Thanks in Advance ! !

Thanks & Regards,

Guru Prasad R

guruprasadr Wed, 02/28/2007 - 23:28

HI Satish,

Thanks for your Infn.

But, CEF is possible on Cisco 7200, 8000 Series & above Models. I have Cisco 2811 Series Router with 2-FastEth Interfaces.

1.I would like to use Static Route(equal cost links) inorder to Load Balance.

Advice on my 2nd Point:

2.If static Route doesn't work means can i configure the Links as "Point-to-Point" Link for Load Balancing Requirement.

Awaiting for your Answers. Thanks in Advance

Thanks & Regards,

Guru Prasad R

ahmednaas Wed, 02/28/2007 - 23:59

Where did get the idea that CEF is available only on high-end routers?

In fact, it is available on ALL Cisco routers and L3 switches.

guruprasadr Thu, 03/01/2007 - 02:09

HI Satish,

Kindly confirm me this feature:

CEF support + Per-Packet Load Balancing

CEF Support + Per-Destionation Load Balancing

is availible in Cisco2811 with IOS 12.4(3c)

Awaiting for your Answers. Thanks in Advance!

Thanks & Regards,

Guru Prasad R

smothuku Thu, 03/01/2007 - 03:24

Hi Guru,

The follwoing IOS supports CEF.

Enterprise :

c2800nm-entbase-mz.12.3-14.T7

c2800nm-entbasek9-mz.12.4-12

c2800nm-entbasek9-mz.12.4-11.T1

c2800nm-entbasek9-mz.12.4-6.XT

c2800nm-entbasek9-mz.12.4-6.XE2

c2800nm-entbasek9-mz.12.4-4.XC6

You are looking for which feature set IOS.

Can you paste sh version output of 2811 router.

HTH

satish

guruprasadr Thu, 03/01/2007 - 03:54

HI All,

My Version is:

c2800nm-advsecurityK9-mz.12.4-3C.bin

Kindly Confirm me whether this Supports:

CEF + Per Packet Load Balancing

CEF + Per Destionation Load Balancing

Note:Whether CEF & (Per-Packet & Per-Destination)Load Balancing is a Single Feature (or) two different Features.

ie.,If we have CEF Feature Enabled means can we use Per-Packet & Per-Destination Load Balancing (or) its an Unique Feature.

Awaiting for your Earlier Updates.Thanks in Advance ! !

Thanks & Regards,

Guru Prasad R

smothuku Thu, 03/01/2007 - 04:45

Hi Guru,

The following IOS supports CEF on 2811 router.

NOTE: Below mentioned IOS requires 256 Mb of DRAM and 64 Mb of flash(min.)

1.c2800nm-advsecurityk9-mz.12.4-6.XT

2.c2800nm-advsecurityk9-mz.12.4-6.XE2

3.c2800nm-advsecurityk9-mz.12.4-4.XC6

4.c2800nm-advsecurityk9-mz.12.4-2.XA

5.c2800nm-advsecurityk9-mz.12.4-11.T1

6.c2800nm-advsecurityk9-mz.12.4-12

7.c2800nm-advsecurityk9-mz.12.3-11.YZ1

8.c2800nm-advsecurityk9-mz.12.3-14.T7

The IOS which you are using doesn't support CEF.(Let me check it once)

CEF means it is for per-packet and per-destination load balancing.

HTH

satish

guruprasadr Thu, 03/01/2007 - 06:36

HI Satish,

Thanks for your Details Infn. We have planning to Upgrade our IOS Version supports CEF Feature.

Can you please provide me a Final Confirmation list of IOS Versions - for 2811 Router supports CEF Feature & Fucntionality.

Thanks & Regards,

Guru Prasad R

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