Juniper ACX2000 Configuration Guide

discard
Syntax discard;
Hierarchy Level [edit logical-systems logical-system-name routing-instances routing-instance-name
routing-options (aggregate | generate) (defaults | route)],
[edit logical-systems logical-system-name routing-instances routing-instance-name
routing-options rib routing-table-name (aggregate | generate) (defaults | route)],
[edit logical-systems logical-system-name routing-options (aggregate | generate) (defaults |
route)],
[edit logical-systems logical-system-name routing-options rib routing-table-name (aggregate |
generate) (defaults | route)],
[edit routing-instances routing-instance-name routing-options (aggregate | generate)
(defaults | route)],
[edit routing-instances routing-instance-name routing-options rib routing-table-name
(aggregate | generate) (defaults | route)],
[edit routing-options (aggregate | generate) (defaults | route)],
[edit routing-options rib routing-table-name (aggregate | generate) (defaults | route)]
Release Information Statement introduced before Junos OS Release 7.4.
Statement introduced in Junos OS Release 9.0 for EX Series switches.
Statement introduced in Junos OS Release 11.3 for the QFX Series.
Statement introduced in Junos OS Release 12.3 for ACX Series routers.
Statement introduced in Junos OS Release 14.1X53-D20 for the OCX Series.
Description Do not forward packets addressed to this destination. Instead, drop the packets, do not
send ICMP unreachable messages to the packets’ originators, and install a reject route
for this destination into the routing table.
To propagate static routes into the routing protocols, include the discard statement when
you define the route, along with a routing policy.
NOTE: In other vendors’ software, a common way to propagate static routes
into routing protocols is to configure the routes so that the next-hop routing
device is the loopback address (commonly, 127.0.0.1). However, configuring
static routes in this way (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 routing
device is the loopback address.
Default When an aggregate route becomes active, it is installed in the routing table with a reject
next hop, which means that ICMP unreachable messages are sent.
Required Privilege
Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
1489Copyright © 2017, Juniper Networks, Inc.
Chapter 41: Configuration Statements

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English