Re: Load balancing

As Pavel correctly pointed out, there are many ways on this particular topic
:)

On Tue, Jul 7, 2009 at 6:20 PM, Pavel Bykov <slidersv_at_gmail.com> wrote:

> No... I never said that. There are many ways to load balance.
> On CPU, on L3, on routing protocol level, on L4, on L7... No time to look
> for all the links right now.
> etherchannel, mac address distribution (like GLBP), hardware cef, software
> cef, ace...
>
> On Tue, Jul 7, 2009 at 6:14 PM, jack daniels <jckdaniels12_at_gmail.com>
> wrote:
>
> > Hi,
> >
> > So that means the only way to load share traffic is CEF ?
> > Request you to fwd some links on how this load balancing happens and what
> > all techiniques are available for load balancing.
> >
> > Reagrds
> > J.Daniels
> >
> >
> > On Tue, Jul 7, 2009 at 9:29 PM, Pavel Bykov <slidersv_at_gmail.com> wrote:
> >
> >> Pretty much.
> >>
> >> Control Plane:
> >> 1. Routing protocol decides that routes are equal cost (including
> static)
> >> and offers them to the routing table (up to preset limit. Default: 4,
> max:6)
> >> 2. Routing table installs all offered routes up to preset limit
> >>
> >> Data Plane:
> >> 1. CEF FIB is programmed from the routing table, resolves all
> adjacencies
> >> (GLEAN entries for ARP) etc.
> >> 2. Redundant entries are installed with sharing in mind
> >>
> >> Data plane forwards the packets, and it's CEFs task to load balance.
> >> CEF cannot use flow mask in most cases, only source/destination pair
> and
> >> optionally ID (sort of seed).
> >>
> >>
> http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_command_reference_chapter09186a0080417d88.html#wp1010171
> >>
> >>
> >>
> >>
> >> On Tue, Jul 7, 2009 at 4:48 PM, jack daniels <jckdaniels12_at_gmail.com
> >wrote:
> >>
> >>> Hi,
> >>>
> >>> Please suggest -
> >>> so routing protocol bring the two routes in routing table for processor
> >>> to read and to load balance TRAFFIC we need CEF .... Cef will load
> balance
> >>> traffic per flow and per destination.
> >>>
> >>>
> >>> Regards
> >>>
> >>>
> >>>
> >>> On Tue, Jul 7, 2009 at 1:55 PM, Zaid Alwasity <
> zaidalwasity_at_hotmail.com>wrote:
> >>>
> >>>> Hi all,
> >>>>
> >>>> I think that load sharing means dividing the load manually between
> >>>> multiple
> >>>> device for example ,network 1-5 are served through router A ,and
> network
> >>>> 6-10 are served through router B like HSRP though multiple stand-by
> >>>> group,
> >>>> and for load balancing both devices are actively serving the networks
> >>>> 1-10
> >>>> like GLBP.
> >>>>
> >>>> Regards,
> >>>> Zaid
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
> Of
> >>>> Pavel Bykov
> >>>> Sent: 07 July 2009 10:59
> >>>> To: jack daniels
> >>>> Cc: Cisco certification
> >>>> Subject: Re: Load balancing
> >>>>
> >>>> for routining, equal cost routes are simultaneously installed in CEF.
> >>>> CEF then load balances to what is predefined. Normally, it's SRC/DST
> >>>> pair
> >>>> what makes the hash.
> >>>> ip cef load-sharing
> >>>> command changes the method of balancing.
> >>>>
> >>>> Software platforms (800/1800/2800/3800/7200) also enable you to load
> >>>> balance
> >>>> per packet in routnd robin fasion.
> >>>> Then it's per interface command "ip load-sharing per-packet"
> >>>>
> >>>> Load sharing/balancing are similar terms which are not divided
> regarding
> >>>> particular feature.
> >>>> So you can refer to balancing as sharing and sharing to balancing.
> >>>>
> >>>>
> >>>> On Tue, Jul 7, 2009 at 9:47 AM, jack daniels <jckdaniels12_at_gmail.com>
> >>>> wrote:
> >>>>
> >>>> > Dear All,
> >>>> >
> >>>> > I'm very confused on the diffrent ways for load balancing the
> traffic
> >>>> if I
> >>>> > have more than one route in my routing table.
> >>>> >
> >>>> > Also please suggest diffrence between load sharing and load
> balancing
> >>>> >
> >>>> >
> >>>> > Regards
> >>>> > J.Daniels
> >>>> >
> >>>> >
> >>>> > Blogs and organic groups at http://www.ccie.net
> >>>> >
> >>>> >
> >>>>
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> >>>> >
> >>>> >
> >>>> >
> >>>> >
> >>>>
> >>>>
> >>>> --
> >>>> Pavel Bykov
> >>>> ----------------
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> >>>
> >>
> >>
> >> --
> >> Pavel Bykov
> >> ----------------
> >> Don't forget to help stopping the braindumps, use of which reduces value
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> >
> >
>
>
> --
> Pavel Bykov
> ----------------
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-- 
<ruhann>
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