Configuring IP Addressing

IP Configuration

IP Configuration

IP Configuration Features

Feature

Default

Menu

CLI

Web

 

 

 

 

 

IP Address and Subnet Mask

DHCP/Bootp

page 8-5

page 8-7

page 8-11

Multiple IP Addresses on a VLAN

n/a

 

page 8-9

 

Default Gateway Address

none

page 8-5

page 8-7

page 8-11

Packet Time-To-Live (TTL)

64 seconds

page 8-5

page 8-7

n/a

Time Server (Timep)

DHCP

page 8-5

page 8-7

n/a

 

 

 

 

 

IP Address and Subnet Mask. Configuring the switch with an IP address expands your ability to manage the switch and use its features. By default, the switch is configured to automatically receive IP addressing on the default VLAN from a DHCP/Bootp server that has been configured correctly with information to support the switch. (Refer to “DHCP/Bootp Operation” on page 8-12for information on setting up automatic configuration from a server.) However, if you are not using a DHCP/Bootp server to configure IP addressing, use the menu interface or the CLI to manually configure the initial IP values. After you have network access to a device, you can use the web browser interface to modify the initial IP configuration if needed.

For information on how IP addressing affects switch performance, refer to “How IP Addressing Affects Switch Operation” on page 8-11.

Multinetting: Assigning Multiple IP Addresses to a VLAN. For a given VLAN you can assign one primary IP address and up to seven secondary IP addresses. This allows you to combine two or more subnets on the same VLAN, which enables devices in the combined subnets to communicate normally through the network without needing to reconfigure the IP address­ ing in any of the combined subnets.

Default Gateway Operation. The default gateway is required when a router is needed for tasks such as reaching off-subnet destinations or forward­ ing traffic across multiple VLANs. The gateway value is the IP address of the next-hop gateway node for the switch, which is used if the requested destina­ tion address is not on a local subnet/VLAN. If the switch does not have a manually-configured default gateway and DHCP/Bootp is configured on the primary VLAN, then the default gateway value provided by the DHCP or Bootp server will be used. If the switch has a manually configured default gateway,

8-3