Extreme Networks ExtremeWare XOS Command Specifikace stáhnout pdf (Strana 435)

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configure iproute add blackhole default

ExtremeWare XOS 10.1 Command Reference Guide 435

configure iproute add blackhole default

configure iproute add blackhole default {vr <vrname>} {multicast-only |

unicast-only}

Description

Adds a default blackhole route to the routing table. All traffic destined for an unknown IP destination is

silently dropped, and no Internet Control Message Protocol (ICMP) message is generated.

Syntax Description

Default

The default VR is VR-2.

Usage Guidelines

While a default route is for forwarding traffic destined to an unknown IP destination, and a blackhole

route is for discarding traffic destined to a specified IP destination, a default blackhole route is for

discarding traffic to the unknown IP destination.

Using this command, all traffic with an unknown destination is discarded.

The default blackhole route is treated like a permanent entry in the event of a switch reset or power

off/on cycle. The default blackhole route’s origin is “b” or “blackhole” and the gateway IP address for

this route is 0.0.0.0.

Example

The following command adds a blackhole default route into the routing table:

configure iproute add blackhole

vr_name Specifies the virtual router to which the route is added.

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