-
Notifications
You must be signed in to change notification settings - Fork 663
How to connect to a target
Connect to target via eth0 to remote target 192.168.1.10 on port 4420.
$ nvme connect -t tcp -a 192.168.1.10 -s 4420 --host-iface=eth0 -n nqn.io-1 --hostnqn nqn.2014-08.com.example:nvme.1nvme connect arguments that may need IPv6 considerations. A scoped address suffixes the IP address with "%".
[ --traddr=, -a ] --- transport address. Use scoped address for RDMA over IPv6, e.g. fe80::020c:caff:fe12:2a0c%enp129s0f0np0
[ --host-iface=, -f ] --- host interface (for tcp transport only. Do not use for RDMA over IPv6)
[ --host-traddr=, -w ] --- host traddr (e.g. FC WWN's). Do not use for RDMA over IPv6$ nvme connect -t rdma -s 4420 -a fe80::020c:caff:fe12:2a0c%enp129s0f0np0 -i 2 -n nqn.2014-08.com.example:nvme.1Scoped addresses (i.e. addr%iface) as defined in RFC4007 is only specified for IPv6. It is not supported for IPv4. That is why the option -f was added for TCP transport. This allows to specify an interface for IPv4. The -f option can also be used fort IPv6 or a scoped IPv6 address can be used instead of the -f option.
The -w option is used to specify a different source address of a TCP socket. It is not used to specify the interface. Interfaces can have more than one IP addresses assigned to them. There is primary IP address, which is used by default when making a connection. There may also be secondary addresses assigned to an interface, and if a user wants to use one of those secondary addresses as the source address of the connection, then they must tell the kernel with the -w option.