Dell S3100 Command Line Reference Guide for the Series 9.110.0 - Page 1067
IPv6 Router Advertisement (RA) Guard, debug ipv6 nd ra–guard
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Command History This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.8(2.0) 9.8(1.0) 9.8(0.0P5) 9.8(0.0P2) 9.2(1.0) 9.0.0.0 8.3.19.0 8.3.11.1 8.3.7.1 Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the Z9100-ON. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the Z9500. Introduced on the Z9000. Introduced on the S4820T. Introduced on the Z9000. Introduced on the S4810. Example Dell# show ipv6 neighbors IPv6 Address Expires(min) Hardware Address State Interface VLAN CPU 100::1 0.03 00:00:00:00:00:22 DELAY Gi 1/12 - CP fe80::200:ff:fe00:22 232 00:00:00:00:00:22 STALE Gi 1/12 - CP 500::1 0.60 00:01:e8:17:5c:af REACH Gi 1/13 - CP fe80::200:ff:fe00:17 232 00:00:00:00:00:29 REACH Gi 1/14 - CP 900::1 0.60 00:01:e8:17:5c:b1 STALE Po 23 - CP 400::1 0.60 00:01:e8:17:5c:ae REACH Gi 1/2 Vl 100 CP Dell# IPv6 Router Advertisement (RA) Guard The IPv6 RA guard provides support to perform conditional forwarding or blocking of the router advertisement messages that are received at the network device platform. This functionality analyzes and filters the RAs sent by the devices and compares the configuration information on the layer 2 device with the RA frame. Once the layer 2 device validates the content of the RA frame against the configuration, it forwards the RA to its unicast or multicast destination. On failure to validate the RA frame content, the RA frame is dropped. The IPv6 RA guard supports two different modes: • Host mode - When a policy with device role as host is applied on an interface, all the RA packets are dropped without validation. You can also configure the host mode policy with VLAN option to drop the RA packets on that specific VLAN and port. • Router mode - When a policy with device role as router is applied on an interface, all the RA packets are validated based on the configuration information in the policy. Similarly, you can also apply this mode over any specific VLAN and the validation is performed only for that particular VLAN RA packets. To configure the IPv6 RA guard, use the following Dell Networking OS commands. debug ipv6 nd ra-guard Enable debugging for IPv6 RA guard snooping information. Syntax debug ipv6 nd ra-guard [interface_type slot/port | count value] Neighbor Discovery Protocol (NDP) 1067
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