Ipv6 Nd Proxy - Brocade Communications Systems NetIron MLXe Series Hardware Installation Manual

IPv6 ND Proxy

For example, to remove entries for the MAC address 000d.cb80.00d in all VLANs, enter the following command at the Privileged EXEC
level of the CLI.
device# clear mac-address 000d.cb80.00d0
Syntax: clear mac-address mac-address [ ethernet slot-num/port-num ] | [ module slot-num ] | vlan number
• If you enter the clear mac-address command without any parameters, the software removes all MAC entries.
• Use the mac-address parameter to remove a specified MAC address from all VLANs. Specify the MAC address in the
following format: HHHH.HHHH.HHHH.
• Use the ethernetslot-num or port-num parameter to remove all MAC addresses for a specified Ethernet port. For the slot
parameter, enter the number of the device slot in which the Ethernet interface module is installed. For the port parameter, enter
the Ethernet port for which to remove all MAC addresses.
• Use the moduleslot-num parameter to remove all MAC addresses for an interface module in a specified device slot.
• Use the vlannumber parameter to remove all MAC addresses for a specified VLAN.
• If you enter the clear mac-address command without any parameters, the software removes all MAC entries.
• Use the mac-address parameter to remove a specified MAC address from all VLANs. Specify the MAC address in the
following format: HHHH.HHHH.HHHH.
• Use the ethernetslot-num or port-num parameter to remove all MAC addresses for a specified Ethernet port. For the slot
parameter, enter the number of the device slot in which the Ethernet interface module is installed. For the port parameter, enter
the Ethernet port for which to remove all MAC addresses.
• Use the moduleslot-num parameter to remove all MAC addresses for an interface module in a specified device slot.
• Use the vlannumber parameter to remove all MAC addresses for a specified VLAN.

IPv6 ND Proxy

Enabling the ND proxy feature causes the router to reply on behalf of the target host (if the target host exists).
For nodes on different segments, the NS request for resolving the neighbor may not reach another host. The reply will contain the link-
local address of the router interface which is sending the reply, instead of the link-local address of the target host.
When any IPv6 packet is received on a proxy interface, it must be parsed to see whether it is known to be one of the following types:
• ICMPv6 Neighbor Solicitation (NS)
If the received packet is an ICMPv6 Neighbor Solicitation (NS), the NS is processed locally but no NA is generated immediately.
Instead the NS is proxied, and the NA will be proxied when it is received. This ensures that the proxy does not interfere with
hosts moving from one segment to another, since it never responds to an NS based on its own cache.
• ICMPv6 Neighbor Advertisement (NA)
If the received packet is an ICMPv6 Neighbor Advertisement (NA), the neighbor cache on the receiving interface is first updated
as if the NA were locally destined, and then the NA is proxied.
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Brocade NetIron MLXe Series Hardware Installation Guide
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