To expand just a bit as well...
discard - will drop packets to the route and not send ICMP unreachable
messages
reject - will drop packets to the route and DOES send ICMP unreachable
messages to the source
receive - this will allow the local system to to receive packets for this
destination
milo
-----Original Message-----
From: Guy Davies [mailto:Guy.Davies@telindus.co.uk]
Sent: Monday, February 04, 2002 7:52 AM
To: 'hawling'; juniper-nsp@puck.nether.net
Subject: RE: Propagate Static Routes into Routing Protocols
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Hi,
Discard doesn't mean ignore this route, it means silently discard any
packets arriving for this prefix for which there are no longer
matches in the forwarding table. The two are entirely different.
It's similar to the cisco config
ip route n.n.n.n m.m.m.m null0
You're just creating a static route in your forwarding table so that
you can redistribute that route into another routing protocol. The
next hop, when you redistribute the route, will be your own IP
address.
Regards,
Guy
> -----Original Message-----
> From: hawling [mailto:ojhomy@singnet.com.sg]
> Sent: Monday, February 04, 2002 12:12 PM
> To: juniper-nsp@puck.nether.net
> Subject: Propagate Static Routes into Routing Protocols
>
>
> Can someone please shed some light on why "discard" is used
> to inject a
> static route? I thought it meant: "ignore this static route".
>
> Thanks.
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~
>
> Propagate Static Routes into Routing Protocols
>
> A common way to propagate static routes into the various routing
> protocols is to configure the routes so that the next-hop
> router is the
> loopback address (commonly, 127.0.0.1). Doing this with the JUNOS
> software (by including a statement such as route
> address/mask-length next-hop 127.0.0.1 ) does not propagate the
> static routes,
> because the
> forwarding table ignores static routes whose next-hop router is the
> loopback address. To propagate static routes into the routing
> protocols,
> configure them as follows:
>
> [edit]
> user@host# set routing-options static route destination-prefix
> discard [edit]
> user@host# show routing-options {
> static {
> route destination-prefix {
> discard;
> }
> }
> }
>
>
>
>
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.
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