Configuration Guide Configuring IP Addresses and Services
the path MTU discovery function fails. To avoid this problem, you should limit the transmission rate of ICMP destination
unreachable packets and other ICMP error packets respectively.
Related Configuration
Configuring the Transmission Rate of ICMP Destination Unreachable Packets Triggered by DF Bit in the IP
Header
The default transmission rate is 10 packets every 100 milliseconds.
The ip icmp error-interval DF command can be used to configure the transmission rate.
Configuring the Transmission Rate of Other ICMP Error Packets
The default transmission rate is 10 packets every 100 milliseconds.
The ip icmp error-interval command can be used to configure the transmission rate.
1.3.5 IP MTU
Working Principle
If an IP packet exceeds the IP MTU size, the RGOS software splits the packet. For all devices in the same physical network
segment, the IP MTU of interconnected interfaces must be the same. You can adjust the link MTU of interfaces on Ruijie
products. After the link MTU of interfaces is changed, the IP MTU of interfaces will be changed. The IP MTU of interfaces
automatically keeps consistent with the link MTU of interfaces. However, if the IP MTU of interfaces is adjusted, the link MTU
of interfaces will not be changed.
Related Configuration
Setting the IP MTU
By default, the IP MTU of an interface is 1500.
The ip mtu command can be used to set the IP packet MTU.
1.3.6 IP TTL
Working Principle
An IP packet is transmitted from the source address to the destination address through routers. After a TTL value is set, the
TTL value decreases by 1 every time when the IP packet passes a router. When the TTL value drops to zero, the router
discards the packet. This prevents infinite transmission of useless packets and waste of bandwidth.
Related Configuration
Setting the IP TTL
By default, the IP TTL of an interface is 64.
The ip ttl command can be used to set the IP TTL of an interface.
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