OSPF & BGP run the world... unless Cisco sales gets there first. If the
later is the case, you are destined for EIGRP (which is the case where I
work).
Phil
----- Original Message -----
From: "Howard C. Berkowitz" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, January 14, 2001 1:47 PM
Subject: Re: ************** Which is more common - OSPF or EIGRP?
*******************
> >Which is more common - OSPF or EIGRP?
>
> OSPF by far, with a niche for ISIS in large carriers, and significant
> use of RIP in small networks.
>
> >
> >Hi
> >
> >I am wondering which routing protocol is more common in the industries -
> >OSPF or EIGRP ?]
> >
> >i am trying to implement some routing protocol on my HQ with several
(20+)
> >branches (with only 1 router in each branch) using hub-and-spoke design.
>
> Give careful thought to whether or not you need a routing protocol or
> not. Static routes, possibly with backup static routes, may be much
> simpler.
>
> Routing protocols sometimes are used to provide a keepalive function
> rather than really conveying routing information. If an individual
> PVC fails in frame, ATM, etc., and your particular combination of IOS
> and carrier don't support recognition of down subinterfaces, it's not
> uncommon to use a routing protocol with hellos to detect the failure
> and trigger backup. Sometimes, you can avoid this by initiating
> backup at the remote sites only, which have only one VC.
>
> >
> >I am wondering which protocol so i use? OSPF or EIGRP ?
> >
> >Is there a limit on the number of areas that one can create with OSPF?
>
> The protocol itself doesn't have a significant limit -- an area
> identifier is 32 bits long. Large numbers of nonzero areas can, if
> you follow ABR configuration guidelines strictly, require large
> numbers of ABRs. On the other hand, if not much will happen in any
> given area, the limit of 2 nonzero areas per ABR is extremely
> conservative and can be violated.
>
> It really depends what you are trying to do. Remember that Area
> 0.0.0.0 can be no more than a collapsed backbone LAN (or pair of
> LANs), with many WAN subinterfaces on one or two ABRs, the
> subinterfaces being in nonzero areas.
>
> >
> >Any help will be appreciated. Thanks
> >
> >
> >Regards
> >
> >
> >
> >
> >
> >
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