BigIron RX Series Configuration Guide 107353-1001986-01DHCP relay agent for IPv6 43If you want to re-enable the feature after disabling it, you must specify the number of load-sharingpaths. The maximum number of paths the device supports is a value from 2 – 8. By entering acommand such as the following, iPv6 load-sharing will be re-enabled.BigIron RX(config)# ipv6 load-sharing 4Syntax: [no] ipv6 load-sharing<num>The <num> parameter specifies the number of paths and can be from 2 – 8. The default is 4..Changing the maximum number of load sharing paths forIPv6By default, IPv6 ECMP load sharing allows traffic to be balanced across up to four equal paths. Youcan change the maximum number of paths the device supports to a value from 2 – 8.To change the number of ECMP load sharing paths for IPv6, enter a command such as thefollowing.BigIron RX(config)# ipv6 load-sharing 8Syntax: [no] ipv6 load-sharing [<num>]The <num> parameter specifies the number of paths and can be from 2 – 8. The default is 4.Changing the ECMP load-sharing method for IPv6Brocade devices can perform ECMP load-sharing for IPv6 traffic based on destination host addressor destination network. The default is network-based IP load sharing. If you want to enable thedevice to perform host-based IP load sharing instead, enter the following command.BigIron RX(config)# ipv6 load-sharing by-hostSyntax: [no] ipv6 load-sharing by-hostThis command enables host-based ECMP load sharing on the device. The command also disablesnetwork-based ECMP load-sharing at the same time.DHCP relay agent for IPv6A client locates a DHCP server using a reserve, link-scoped multicast address. For this reason, it isa requirement for direct communication between the client and the server that they be attached bythe same link. However, in some situations in which ease of management, economy, and scalabilityis a concern, it is useful to allow a DHCP client to send a message to a DHCP server by using aDHCP relay agent. A DHCP relay agent, which may reside on the clients link, is used to relaymessages between the client and the server. A DHCP relay agent is transparent to the client.When the relay agent receives a message to be relayed from a client to another relay agent, itcreates a new Relay-forward message, puts the original DHCP message to relay forward option, andincludes its only address and the address it received is in the same option.
