3com 5500-ei pwr Instruccion De Instalación

 

4-9 

z 

If you configure a remote ID sub-option in both system view and on a port, the remote ID sub-option 

configured on the port applies when the port receives a packet, and the global remote ID applies to 

other interfaces that have no remote ID sub-option configured. 

z 

If you have configured a remote ID with the vlan vlan-id argument specified, and the other one 

without the argument in Ethernet port view, the former remote ID applies to the DHCP messages 

from the specified VLAN, while the latter one applies to DHCP messages from other VLANs. 

z 

In a port aggregation group, you can use this command to configure the primary and member ports 

respectively. When Option 82 is added, however, the remote ID is subject to the one configured on 

the primary port. 

z 

The remote ID configured on a port will neither be synchronized in the case of port aggregation nor 

support XRN. 

 

Follow these steps to configure the padding format for Option 82: 

Enter system view 

system-view 

— 

Configure the padding 
format 

dhcp-snooping information 
packet-format { extended | 
standard } 

Optional 

By default, the padding format is 
in extended format. 

 

Follow these steps to configure IP filtering: 

Enter system view 

— 

Enter Ethernet port view 

interface interface-type 
interface-number 

— 

Create a static binding 

ip source static binding 
ip-address ip-address 
[ mac-address mac-address ] 

Optional 

By default, no IP 
static binding entry 
is created. 

Enable IP filtering 
based on the 
DHCP-snooping table 
and the IP static 
binding table 

ip check source ip-address 
[ mac-address ] 

Enable IP 
filtering 

Enable IP filtering 
based on 
authenticated 802.1x 
clients 

Either command is 
required 

By default, this 
function is disabled.