NetXtreme-UG100
35
NetXtreme-C/NetXtreme-E
User Guide
NOTE:
In
Table 21
, the brackets [ ] are required for the IPv6 addresses.
The content of option 17 should be <2-byte Option Number 201|202|203> <2-byte length> <data>.
10.3.2.3 Configuring the DHCP Server
Configure the DHCP server to support Option 16 and Option 17.
NOTE:
The format of DHCPv6 Option 16 and Option 17 are fully defined in RFC 3315.
11 VXLAN: Configuration and Use Case Examples
VXLAN encapsulation permits many layer 3 hosts residing on one server to send and receive frames by encapsulating on
to single IP address associated with the NIC card installed on the same server.
This example discusses basic VXLAN connectivity between two RHEL servers. Each server has one physical NIC enabled
with outer IP address set to 1.1.1.4 and 1.1.1.2.
A VXLAN10 interface with VXLAN ID 10 is created with multicast group 239.0.0.10 and is associated with physical network
port pxp1 on each server.
An IP address for the host is created on each server and associated that to VXLAN interface. Once the VXLAN interface is
brought up, the host present in system 1 can communicate with host present in system 2. The VLXAN format is shown in
Table 22
.
Table 23
provides VXLAN command and configuration examples.
Table 21: DHCP Option 17 Suboption Definition
Suboption
Definition
201
First iSCSI target information in the standard root path format
"iscsi:"[<servername>]":"<protocol>":"<port>":"<LUN>":"<targetname>"
203
iSCSI initiator IQN
Table 22: VXLAN Frame Format
MAC header
Outer IP header with proto =
UDP
UDP header with Destination
port= VXLAN
VXLAN header (Flags, VNI)
Original L2
Frame
FCS
Table 23: VXLAN Command and Configuration Examples
System 1
System 2
PxPy: ifconfig PxPy 1.1.1.4/24
PxPy: ifconfig PxPy 1.1.1.2/24
IP LINK ADD VXLAN10 TYPE VXLAN ID 10 GROUP 239.0.0.10
DEV PXPY DSTPORT 4789
IP link add vxlan10 type vxlan id 10 group 239.0.0.10 dev PxPy
dstport 4789
IP addr add 192.168.1.5/24 broadcast 192.168.1.255 dev vxlan10
IP addr add 192.168.1.10/24 broadcast 192.168.1.255 dev vxlan10
IP link set vxlan10 up
IP link set vxlan10 up
ip –d link show vxlan10
Ping 192.168.1.10
ifconfig vxlan10 (MTU 1450) (SUSE and RHEL)
NOTE:
X represents the PCIe bus number of the physical adapter found in the system. Y represents the port number on the physical
adapter.
