150 Setting Basic Network Information
switch, for example Telnet, SSH, DHCP client, and TFTP. If using the out-of-
band management port, it is strongly recommended that the port be
connected only to a physically isolated secure management network.
Alternatively, network administrators may choose to manage their network via
the production network. This is in-band management. Because in-band
management traffic is mixed in with production network traffic, it is subject
to all of the filtering rules usually applied on a switched/routed port, such as
ACLs and VLAN tagging, and is rate limited to protect against DoS attacks.
You can assign an IP address or IPv6 addresses to the
OOB management port
and to any VLAN. By default, all ports are members of VLAN 1. If you assign an
IP address to VLAN 1, you can connect to the switch management interface by
using any of the front-panel switch ports. This is required to manage the
N2000
switches over an Ethernet port.
Dell recommends that you use the OOB port for remote management. The
following list highlights some advantages of using OOB management instead
of in-band management:
• Traffic on the OOB port is passed directly to the switch CPU, bypassing
the switching silicon. The OOB port is implemented as an independent
NIC, which allows direct access to the switch CPU from the management
network.
• If the production network is experiencing problems, you can still access
the switch management interface and troubleshoot issues.
• Because the OOB port is intended to be physically isolated from the
production network or deployed behind a firewall, configuration options
are limited to just those protocols needed to manage the switch. Limiting
the configuration options makes it difficult to accidentally cut off
management access to the switch.
DHCP can be enabled on the OOB interface and VLAN interfaces
simultaneously, or you can configure static information. To configure static
address information on the default VLAN, set the IP address and subnet mask
on the VLAN interface and configure a global default gateway for the switch.
Adjusting the Management Interface MTU
When logging in to the Dell Networking switch using TCP, the switch
negotiates the TCP Maximum Segment Size (MSS) using the minimum of
the requested MSS or the MTU setting of the port. TCP packets are