[j-nsp] source address selection for RE generated traffic addresses to direct neighbors

[Andy Koch]

On 1/22/19 11:18 AM, Martin T wrote:
> Hi,
>
> how does Junos choose the source address for RE generated traffic
> addresses to direct neighbors if the application(for example ping
> utility) does not bind to specific address? Does it choose the first
> address configured on the egress interface which falls in the same
> network as the destination address?


Hi Martin,

If you are looking to be deterministic on your address selection, you 
will want to check out primary and preferred addresses:

https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/interfaces-configuring-default-primary-and-preferred-addresses-and-interfaces.html


Hope that helps,
Andy

Andy Koch
Hoyos Consulting LLC
ofc: +1 608 616 9950
andyk at hoyosconsulting.com
http://www.hoyosconsulting.com