Routing Protocol behavior

[Tauer Drumond]

Hi all....

I have two CISCO 2811 routers connected. I have two Metro-Ethernet links between them.

I've configured OSPF and when one link goes down, OSPF send all traffic through another link. That's working fine.

But my problem is, when one link is poor, not down, but loosing packtes, OSPF still continuos send traffic through this one, what

make my applications working bad.

I would like some Routing Protocol, if its possible, to observe the link condition. If its loosing packet anyway, the protocol

doesn't send traffic through it.

Is it possible?

Is there another way to do that?

Thanks

Tauer

[Tauer Drumond]

Hi Edison,

exactly, o a Metro-E, the router interface will not flap.

So... I'll look at PfR. Right?

[Edison Ortiz]

So... I'll look at PfR. Right?

Yes and you should feel lucky that is supported in your router.

__

Edison.

[Tauer Drumond]

Great point...

what IOS version support this?

thanks

[Edison Ortiz]

Tauer,

Read the link I posted earlier, it has all the information under Q&A.

Personally, I know the concept on PfR but I'm not well versed on it. The technology is very new.

__

Edison.

[Tauer Drumond]

Ok Edison,

I have been fighting with this long time.

I thank you all by help.

Regards

Tauer

[Mohamed Sobair]

Hi,

I would highly recommend (PFR) Performance routing as suggested by other colleages.

Performance routing consist of the following:

1- 2 or more boarder routers.

2- 2 or more egress interfaces.

3- Master Controller.

Performance routing takes into account the following to determine the best path in a Network.

1- Loadsharing.

2- Link

a) packet loss.

b) delay

c) delay variation (jitter)

d) utilization.

3- Cost minimization.

Unlike normal IGPs where they normally determine best paths based on Cost calculation, Performance routing takes all the above when calculation the Cost of the Path.

Performance routing is supported on some series of routers, 2800 is one of the supported Modular ISR for (PFR).

HTH

Mohamed