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Netgear XCM8806 Chassis Hardware Installation Guide - Page 830

con iproute add blackhole ipv4 default

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NETGEAR 8800 Chassis Switch CLI Manual Syntax Description ipNetmask ipaddress mask vrname multicast multicast-only unicast unicast-only Specifies an IP address/mask length. Specifies an IP address. Specifies a subnet mask. Specifies the virtual router to which the route is added. Adds the blackhole route to the multicast routing table. Adds the blackhole route to the multicast routing table. Adds the blackhole route to the unicast routing table. Adds the blackhole route to the unicast routing table. Default If you do not specify a virtual router, the current virtual router context is used. Usage Guidelines A blackhole entry configures packets with the specified destination IP subnet to be discarded. Blackhole entries are useful as a security measure or in special circumstances where a specific destination IP subnet must be discarded. Blackhole entries are treated like permanent entries in the event of a switch reset or power off/on cycle. Example The following command adds a blackhole address to the routing table for packets with a destination address of 100.101.145.4: configure iproute add blackhole 100.101.145.4/32 configure iproute add blackhole ipv4 default configure iproute add blackhole ipv4 default {multicast | multicast-only | unicast | unicast-only} {vr } 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 vrname multicast Specifies the virtual router to which the route is added. Adds the default blackhole route to the multicast routing table. 830 | Chapter 19. IP Unicast Commands

Section	Page
NETGEAR 8800 Chassis Switch CLI Manual	1
Contents	3
1. Command Reference Overview	6
Introduction	6
Audience	6
Structure of this Guide	7
Understanding the Command Syntax	7
Access Levels	7
Syntax Symbols	8
Syntax Helper	8
Object Names	9
Command Shortcuts	10
Port Numbering	10
Numerical Ranges	10
Line-Editing Keys	11
Command History	12
2. Commands for Accessing the Switch	13
3. Commands for Managing the Switch	57
SNMP	57
Telnet	58
TFTP	58
System Redundancy with Dual Management Modules Installed	58
Power Supply Management	58
Simple Network Time Protocol	59
4. Commands for Managing the NETGEAR 8800 Software	157
5. Commands for Configuring Slots and Ports on a Switch	190
6. Commands for Configuring LLDP	269
7. PoE Commands	300
Summary of PoE Software Features	300
8. Commands for Status Monitoring and Statistics	330
Event Management System	330
sFlow Statistics	331
RMON	331
9. VLAN Commands	425
10. FDB Commands	453
11. Commands for Virtual Routers	472
12. Policy Manager Commands	481
13. ACL Commands	487
14. QoS Commands	520
15. Security Commands	554
SSH	554
SSL	554
User Authentication	554
Denial of Service	555
16. Network Login Commands	679
17. STP Commands	737
STP	737
RSTP	737
MSTP	738
Spanning Tree Domains	738
Member VLANs	738
Carrier VLAN	738
Protected VLAN	739
STPD Modes	739
Encapsulation Modes	740
STP Rules and Restrictions	741
18. VRRP Commands	793
19. IP Unicast Commands	814
20. IPv6 Unicast Commands	904
21. RIP Commands	950
22. RIPng Commands	973
23. OSPF Commands	994
OSPF Edge Mode	995
24. OSPFv3 Commands	1036
OSPF Edge Mode	1037
25. BGP Commands	1075
26. IP Multicast Commands	1163
27. IPv6 Multicast Commands	1242
28. MSDP Commands	1261
29. vMAN (PBN) Commands	1296
A. Configuration and Image Commands	1306
B. Troubleshooting Commands	1345
Event Management System	1345