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Installation and Getting Started Guide
USING THE WEB MANAGEMENT INTERFACE
1. Log on to the device using a valid user name and password for read-write access. The System configuration
panel is displayed.
2. Click on the plus sign next to Configure in the tree view to expand the list of configuration options.
3. Click on the plus sign next to IP in the tree view to expand the list of IP option links.
4. Click on the Interface
link to display the interface table.
5. Click on the Modify button in the row for the port.
6. Select the encapsulation type from the Encapsulation pulldown menu.
7. Click the Add button to save the change to the device’s running-config file.
8. To configure settings for another port, select the port (and slot, if applicable) and go to step 6.
9. Select the Save
link at the bottom of the dialog. Select Yes when prompted to save the configuration change
to the startup-config file on the device’s flash memory.
Changing the Size of the Maximum Transmission Unit (MTU)
The Maximum Transmission Unit (MTU) is the maximum size an IP packet can be when encapsulated in a Layer 2
packet. If an IP packet is larger than the MTU allowed by the Layer 2 packet, the routing switch fragments the IP
packet into multiple parts that will fit into the Layer 2 packets, and sends the parts of the fragmented IP packet
separately, in different Layer 2 packets. The device that receives the multiple fragments of the IP packet
reassembles the fragments into the original packet.
Since the MTU depends on the encapsulation type, and the encapsulation type can be configured on an individual
port basis, the MTU also can be configured on an individual port basis.
The default MTU for Ethernet II packets is 1500 bytes. The default for SNAP packets is 1492 bytes.
To change the MTU for a port, use either of the following methods.
USING THE CLI
To change the MTU for interface 1/5 to 1000, enter the following commands:
HP9300(config)# int e 1/5
HP9300(config-if-5)# ip mtu 1000
Syntax: ip mtu <num>
The <num> parameter specifies the MTU. Ethernet II packets can hold IP packets from 572 – 1500 bytes long.
Ethernet SNAP packets can hold IP packets from 572 – 1492 bytes long. The default MTU for Ethernet II packets
is 1500. The default MTU for SNAP packets is 1492.
USING THE WEB MANAGEMENT INTERFACE
1. Log on to the device using a valid user name and password for read-write access. The System configuration
panel is displayed.
2. Click on the plus sign next to Configure in the tree view to expand the list of configuration options.
3. Click on the plus sign next to IP in the tree view to expand the list of IP option links.
4. Click on the Interface
link to display the interface table.
5. Click on the Modify button in the row for the port.
6. Enter an MTU value from 572 – 1492 if the interface is operating with Ethernet SNAP encapsulation. If the
interface is operating with Ethernet II, enter a value from 572 – 1500.
7. Click the Add button to save the change to the device’s running-config file.
8. To configure settings for another port, select the port (and slot, if applicable) and go to step 6.
9. Select the Save
link at the bottom of the dialog. Select Yes when prompted to save the configuration change
to the startup-config file on the device’s flash memory.
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