Re: Routing Protocol Load-Sharing
Hi Evan, Ospf is like 6 equal cost paths and EIGRP is like 4 equal or unequal cost paths. EIGRP is more flexible to have unequal load balancing. Cu Geert Hampe CCNP+Voice+ATM CCDP Evan You [EMAIL PROTECTED] wrote in message 001001bff708$38afaf20$[EMAIL PROTECTED]">news:001001bff708$38afaf20$[EMAIL PROTECTED]... What is the maximum number of equal-path equal-cost load sharing / balancing will OSPF or EIGRP do? Basically, I have 12 T1 circuits that I am thinking of load-sharing between two Data Centers. I am either thinking of using a Larscom Orion 4000 IMUX to bundle the T1 into two groups and out into HSSI interfaces of the 7000 routers, or just simply hook-up all 12 T1 directly to the routers and have them load-share the links via routing protocols. But I am not certain if the second option will work. I know that the routers will be taxed more and the network overall will have several more routes to handle, but the advantage is that each link is completely redundant from each other. But more than anything, I am not sure if any routing protocols will handle 12 equal-path/equal-cost load-sharing and balancing. Thanks, Evan You - CCNA ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Routing Protocol Load-Sharing
On Wed, 26 Jul 2000, Evan You wrote: What is the maximum number of equal-path equal-cost load sharing / balancing will OSPF or EIGRP do? 6 i believe, and I believe 4 is the default. Brian Basically, I have 12 T1 circuits that I am thinking of load-sharing between two Data Centers. I am either thinking of using a Larscom Orion 4000 IMUX to bundle the T1 into two groups and out into HSSI interfaces of the 7000 routers, or just simply hook-up all 12 T1 directly to the routers and have them load-share the links via routing protocols. But I am not certain if the second option will work. I know that the routers will be taxed more and the network overall will have several more routes to handle, but the advantage is that each link is completely redundant from each other. But more than anything, I am not sure if any routing protocols will handle 12 equal-path/equal-cost load-sharing and balancing. Thanks, Evan You - CCNA ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] -- - Brian Feeny, CCNA [EMAIL PROTECTED] 318-222-2638 x 109 http://www.shreve.net/~signal Network Administrator ShreveNet Inc. (ASN 11881) ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Routing Protocol Load-Sharing
Chuck, Thanks for the input. I agree with your logic. But part of the problem is that these are International circuits going from one country to another. And believe it or not, most of the time it's much cheaper to bundle several E1s or T1s together instead of getting a fractional T3 or E3 internationally (I know, I work for WorldCom). - Evan -Original Message- From: Chuck Larrieu [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 26, 2000 11:02 AM To: Cisco Mail List; Evan You Subject:RE: Routing Protocol Load-Sharing Evan, at some point you might want to look beyond single circuits. An alternative might be to aggregate your bandwidth by having your carrier terminate it as ATM, and populate your routers with IMA cards to give you bandwidth. Fractional DS3 should be a lot less expensive and gives you a lot more room to grow. As you have now discovered, adding T-1s to solve bandwidth problems has its limits. The fact that you have 12 point to points between two sites tells me 1) that it's past time to look at this with fresh eyes, 2) your company must have too much money, and 3) your telco really loves you :- OSPF is 4 equal cost paths. EIRP is 6, and the paths can be of unequal cost. Where are you located? Contact me off line. Chuck ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Routing Protocol Load-Sharing
I believe the no# is 6 Duck - Original Message - From: Evan You [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, July 26, 2000 6:48 AM Subject: Routing Protocol Load-Sharing What is the maximum number of equal-path equal-cost load sharing / balancing will OSPF or EIGRP do? Basically, I have 12 T1 circuits that I am thinking of load-sharing between two Data Centers. I am either thinking of using a Larscom Orion 4000 IMUX to bundle the T1 into two groups and out into HSSI interfaces of the 7000 routers, or just simply hook-up all 12 T1 directly to the routers and have them load-share the links via routing protocols. But I am not certain if the second option will work. I know that the routers will be taxed more and the network overall will have several more routes to handle, but the advantage is that each link is completely redundant from each other. But more than anything, I am not sure if any routing protocols will handle 12 equal-path/equal-cost load-sharing and balancing. Thanks, Evan You - CCNA ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
