Qtech QSW-8200-52T-POEAC- DC — user Manual for Layer 3 Forwarding Commands and ARP Configuration [30/47]

Превью страниц Страница 30 / 47

User Manual

Chapter 1. Commands for Layer 3 Forwarding 30

www.qtech.ru

 %Jan 01 01:05:53 2006 IP ARP: rcvd, type REQUEST, src 172.16.1.251, 00-e0-4c-88-ad-

bc, dst 172.16.1.110, 00-00-00-00-00-00 flag 0x0, pkt type 1, intf Vlan100.

 e%Jan 01 01:05:53 2006 IP ARP: rcvd, type REQUEST, src 172.16.1.251, 00-e0-4c-88-ad-

bc, dst 172.16.1.110, 00-00-00-00-00-00 flag 0x0, pkt type 1, intf Vlan100.

 %Jan 01 01:05:53 2006 IP ARP: rcvd, type REQUEST, src 172.16.1.251, 00-e0-4c-88-ad-

bc, dst172.16.1.110, 00-00-00-00-00-00 flag 0x0, pkt type 1, intf Vlan100.

1.4.5 ip proxy-arp

 Command: ip proxy-arp

 no ip proxy-arp

 Function: Enables proxy ARP for VLAN interface; the no command disables proxy ARP.

 Default: Proxy ARP is disabled by default.

 Command mode: VLAN Interface Mode

 Usage Guide: When an ARP request is received on the layer 3 interface, requesting an

IP address in the same IP segment of the interface but not the same physical network,

and the proxy ARP interface has been enabled, the interface will reply to the ARP with

its own MAC address and forward the actual packets received. Enabling this function

allows machines to physically be separated but in the same IP segment and

communicate via the proxy ARP interface as if in the same physical network. Proxy ARP

will check the route table to determine whether the destination network is reachable

before responding to the ARP request; ARP request will only be responded if the

destination is reachable.

 Note: the ARP request matching default route will not use proxy.

 Example: Enable proxy ARP for VLAN 1.

 Switch(Config-if-Vlan1)#ip proxy-arp

1.4.6 l3 hashselect

 This command is not supported by the switch.

1.4.7 show arp

 Command: show arp [<ipaddress>] [<vlan-id>] [<hw-addr>] [type {static | dynamic}]

[count] [vrf word]

 Function: Displays the ARP table.

 Parameters: <ipaddress> is a specified IP address; <vlan-id> stands for the entry for the

identifier of specified VLAN; <hw-addr> for entry of specified MAC address; static for

static ARP entry; dynamic for dynamic ARP entry; count displays number of ARP

entries; word is the specified vrf name.

 Command mode: Admin Mode

 Usage Guide: Displays the content of current ARP table such as IP address, MAC

address, hardware type, interface name, etc.

 Example: