IES-1000 User’s Guide

 

 

Table 10-12 Bridge IGMP Snooping Record

 

 

 

 

 

LABEL

DESCRIPTION

 

 

 

 

 

 

Member Ports

This field displays the ports that belong to this multicast group, E=Ethernet, 1~8 = ADSL

 

 

 

ports 1 through 8.

 

 

 

 

 

 

Refresh

Click this button to update the multicast filtering record.

 

 

 

 

 

 

FlushAll

Click this button to clear the multicast filtering record.

 

 

 

 

 

10.5.8DHCP Relay

DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain TCP/IP configuration at start-up from a DHCP server. You can configure the Integrated Ethernet Switch to relay client TCP/IP configuration requests to a DHCP server and the server’s responses back to the clients.

10.5.9DHCP “Relay Agent Information Option”

The Integrated Ethernet Switch can add information to client TCP/IP configuration requests that it relays to a DHCP server. This helps provide authentication about the source of the requests. You can also specify additional information for the Integrated Ethernet Switch to add to the client TCP/IP configuration requests that it relays to the DHCP server. Please refer to RFC 3046 for more details.

10.5.10DHCP Relay Agent Circuit ID Sub-option Format

The DHCP relay agent information feature adds an Agent Information field to the option 82 field of the DHCP headers of client TCP/IP configuration request frames that the Integrated Ethernet Switch relays to a DHCP server. The Agent Information field that the Integrated Ethernet Switch adds contains an “Agent Circuit-ID sub- option” that includes the slot ID, port number, VLAN ID and optional information about the port where the TCP/IP configuration request was received.

The following figure shows the format of the Agent Circuit ID sub-option. The 1 in the first field identifies this as an Agent Circuit ID sub-option. If the configuration request was received on a network module’s port, a 1-byte Slot ID field specifies the slot location of the network module in the Integrated Ethernet Switch and a 1-byte Port No field specifies the ingress port number. The next field is 2 bytes and displays the DHCP request packet’s VLAN ID. The last field (A) can range from 0 to 24 bytes and is optional information (that you specify) about this relay agent.

Figure 10-14 DHCP Relay Agent Circuit ID Sub-option Format

Getting Started Screens

10-15