Skspruce Technologies Inc. WIA3200 Manuel D’Utilisation
30 JadeOS User Manual
To view ARP table, use show arp command:
(JadeOS) #show arp
Address HWaddress Interface Type
192.168.20.1 00:13:1A:A5:CC:80 mgmt 1 Dynamic
192.168.20.15 00:15:C5:F3:35:B2 mgmt 1 Dynamic
192.168.20.152 00:14:22:19:FC:C4 mgmt 1 Dynamic
119.6.100.1 C4:64:13:D1:9A:EA Gi 12/0 Dynamic
192.168.20.226 04:8B:42:10:6C:1C mgmt 1 Dynamic
172.50.3.2 04:8B:42:20:00:F5 Gi 12/2 Dynamic
6.3.2 Configuring ARP Proxy
Proxy ARP includes local proxy ARP and proxy ARP. They both reply ARP
request with interface MAC address, no matter the request address is in existence or
not. But they have differences too. Proxy ARP will reply ARP request no matter the
request address is in the same network segment with interface or not. Local proxy
ARP will reply when ARP request’s original address, destination address and interface
address are in the same network segment.
not. But they have differences too. Proxy ARP will reply ARP request no matter the
request address is in the same network segment with interface or not. Local proxy
ARP will reply when ARP request’s original address, destination address and interface
address are in the same network segment.
In case of the TUNNEL broadcast message suppression and DHCP snooping is open,
client need to communicate with another client that in the same network segment but
different tunnel, so we need to continuously broadcast ARP message to look up an-
other client. In the above situation, we can open the local proxy ARP function in
JadeOS. In this way, JadeOS will act as ARP proxy to ensure the client’s data com-
munication in different tunnel, and the same time, avoid a lot of useless broadcast
message caused by repeat broadcast.
client need to communicate with another client that in the same network segment but
different tunnel, so we need to continuously broadcast ARP message to look up an-
other client. In the above situation, we can open the local proxy ARP function in
JadeOS. In this way, JadeOS will act as ARP proxy to ensure the client’s data com-
munication in different tunnel, and the same time, avoid a lot of useless broadcast
message caused by repeat broadcast.
6.4 Configuring MTU and TCP MSS
Mtu and tcp mss is the attribute of interface.
When the data packet is larger than mtu value, system will fragment data packet ac-
cording to mtu value. Fragmentation will affect data performance, so you should try
to avoid fragmentation.
cording to mtu value. Fragmentation will affect data performance, so you should try
to avoid fragmentation.
If the interface is the attribute of tcp mss and the tcp mss option of syn message is
larger than the tcp mss value of interface, system will modify the tcp mss option of
this syn message and update tcp checksum when tcp syn message goes through inside
interface and outside interface. You should try to avoid fragmentation for fragmenta-
tion will affect data performance
larger than the tcp mss value of interface, system will modify the tcp mss option of
this syn message and update tcp checksum when tcp syn message goes through inside
interface and outside interface. You should try to avoid fragmentation for fragmenta-
tion will affect data performance
To configure mtu, use mtu <68-9216> command in config mode:
To configure tcp mss, use tcp4mss <4-65535> command in interface mode:
For example, configure the mtu and tcp4mss of interface gigaethernet 1/0 is 1460 and