GEIP with VIP2-50 has an internal PCI bus of 400 Mbps... it will achieve 400
Mbps for large (or jumbo) sized frames.
Typical Internet traffic (50% of 64 bytes packets, 50% from 512 to 1500
bytes) will barely pass 200 Mbps.
If you have 3 VIP2-50 (8Mb SRAM required) OC-3 cards and 2 GEIPs (also with
8Mb SRAM), it may achieve line rate performance on real-world traffic (but
would not for 64 bytes packets only). For 4 x OC-3, may be 2 GEIP+ can do
the job.
Rubens Kuhl Jr.
> -----Original Message-----
> From: Hyunseog Ryu [mailto:HRyu@norlight.com]
> Sent: quinta-feira, 3 de agosto de 2000 16:26
> To: Rodney van den Oever
> Cc: cisco-nsp@puck.nether.net
> Subject: Re: [nsp] Cisco 7507 performance
>
>
>
> Hi, folks
>
> I just want to know whether there will be performance issue with 4 OC3 and
> one GE or not.
> GEIP+ (Enhanced GE) has built-in VIP4 card, and it can process up to
> 800Mbps.
> GEIP with built-in VIP2 can process up to 400Mbps.
> But that is some kind of ideal number.
> I just want to know the real experience for this environment.
> The reason for this is because we have 7507 and want to upgrade this for
> OC3 environment.
> I want to go with Juniper M20. ;>
> But there is a lot of facts with router platform decision, you know.
>
> Hyun
>
>
> On 08/01/2000 01:33:32 PM "Rodney van den Oever" wrote:
>
> >> >I'm curious about Cisco 7507 performance.
> >> >If I use 4 OC3 interfaces and one Gigabit Ethernet Interface in one
> Cisco
> >> >7507,
> >> >is there no problem?
> >> >Is there anybody who had this kind of experience?
> >> >Please let me know the performance of this combination.
> >>
> >>
> >> Do you intend to route all OC-3 traffic across the single gigabit?
> >> The gigabit int can only cope with around 300Mbps (limitation cBus)
> whereas
> >> 4xOC-3 amounts to 600Mbps.
> >>
> >> The gigabit int is only available as a single interface processor card
> >> (GEIP) right now so you can't benefit from dCEF here (switching between
> Port
> >> Adapters on the Linecard itself).
> >>
> >> Apart from that I do not have much faith in the stability in
> the GEIP at
> >> this moment, and you are now putting all your eggs in one basket.
> >> Maybe you could add another GEIP for redundancy on both sides and load
> >> balance these links or even setup a Port Channel with two GEIP's?
> >>
> >> --
> >> Rodney van den Oever / PGP Key ID 0x0A6CCE53
> >> 'OIR - On Insertion Reload'
> >>
> >>
> >>
>
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