Setting Mtu For An Interface - HPE FlexNetwork HSR6800 Configuration Manual

Figure 73 Network diagram
Configuration procedure
1. Configure Router A:
# Specify IP addresses for GigabitEthernet 2/1/1 and GigabitEthernet 2/1/2.
<RouterA> system-view
[RouterA] interface gigabitethernet 2/1/1
[RouterA-GigabitEthernet2/1/1] ip address 1.1.1.2 24
[RouterA-GigabitEthernet2/1/1] quit
[RouterA] interface gigabitethernet 2/1/2
[RouterA-GigabitEthernet2/1/2] ip address 2.2.2.2 24
# Enable GigabitEthernet 2/1/2 to forward directed broadcasts destined for the directly
connected network.
[RouterA-GigabitEthernet2/1/2] ip forward-broadcast
2. Configure Router B:
# Configure a static route to the host.
<RouterB> system-view
[RouterB] ip route-static 1.1.1.1 24 2.2.2.2
# Specify an IP address for GigabitEthernet 2/1/2.
[RouterB] interface gigabitethernet 2/1/2
[RouterB-GigabitEthernet2/1/2] ip address 2.2.2.1 24
# Enable GigabitEthernet 2/1/2 to receive directed broadcasts destined for the directly
connected network.
[RouterB-GigabitEthernet2/1/2] ip forward-broadcast
After the configurations are completed, if you ping the subnet-directed broadcast address 2.2.2.255
on the host, the interface GigabitEthernet 2/1/2 of Router B can receive the ping packets. If you
delete the ip forward-broadcast configuration on any router, the interface GigabitEthernet 2/1/2 of
Router B cannot receive the ping packets.

Setting MTU for an interface

When a packet exceeds the MTU of the output interface, the device processes it in one of the
following ways:
•
If the packet disallows fragmentation, the device discards it.
•
If the packet allows fragmentation, the device fragments it and forwards the fragments.
Fragmentation and reassembling consume system resources, so set the appropriate MTU for an
interface based on the network environment to avoid fragmentation.
To set the MTU for an interface:
Step
1. Enter system view.
2. Enter interface view.
Command
system-view
interface interface-type
interface-number
186
Remarks
N/A
N/A