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Monitoring latency to a destination from differents links

‎01-06-2018 09:05 AM

Hello dears,

I have a MX router wich is connected to 3uptreamers and I receive the full routing table from each upstreamer.

I'd like to know the latency to a destination (ex 8.8.8.8) from each link.

Can someone help through... I'm thinking about IP SLA does someone has any idea.

regards.

2 REPLIES 2
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Re: Monitoring latency to a destination from differents links

‎01-06-2018 10:19 AM

Hi Folks,

When you mention 3 upstream, I assume you have your own Public IP range pool.

The tricky part is you have to control both way traffic toward 8.8.8.8 and the reverse traffic direction to your IP Pool from 8.8.8.8 perspective to gauge the real latency figures.

With IP SLA you can monitor traffic to 8.8.8.8 in one direction at a time; but you need to automate this traffic to change via other service provider to get the figures for the other service provider.

 

 

-Python JNCIE 3X [SP|DC|ENT] JNCIP-SEC JNCDS 3X [ WAN | DC|SEC] JNCIS-Cloud JNCIS-DevOps CCIP ITIL
#Please mark my solution as accepted if it helped, Kudos are appreciated as well.
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Re: Monitoring latency to a destination from differents links

‎01-07-2018 03:03 AM

the general equivilent of IP SLA is the RPM on Junos.

 

https://www.juniper.net/documentation/en_US/junos/topics/concept/security-rpm-overview.html

 

But I don't think this is designed to hit the same address via multiple upstreams.  But to test the BGP links themselves.

 

I've used a 3rd party product for this from Noction called IRP.  They probe the same addresses on all peers by having Filter based Forwarding setup for source address.  The server tests each carrier via a different source and FBF insures the traffic leaves via the right carrier.  They also keep a copy of the routing table by peering BGP internally to know what current choices are.  This does also have the ability to inject routes to change both outbound and advertised routes.  

 

you could use FBF with any other tool that does probing in a similar way.

 

Filter Based Forwarding

https://www.juniper.net/documentation/en_US/junos/topics/example/firewall-filter-option-filter-based...

 

IRP free version

https://www.noction.com/irp-lite

 

Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
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