3Com MSR 50 Series, Configuration Manual

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SDH Frame Structure 540
Terms 540
Multiplexing E1/T1 Channels to Form STM-1 541
Calculating E1/T1 Channel Sequence Numbers 541
Overhead Byte 542
CPOS Interface Application Scenario 543
Configuring a CPOS Interface 544
Configuring an E1 Channel 545
Configuring a T1 Channel 545
Displaying and Maintaining CPOS Interfaces 546
Troubleshooting CPOS Interfaces 546
30
ARP C
ONFIGURATION
ARP Overview 549
ARP Function 549
ARP Message Format 549
ARP Process 550
ARP Mapping Table 551
Configuring ARP 552
Configuring a Static ARP Entry 552
Configuring the Maximum Number of ARP Entries Dynamically Learned on an
Interface
552
Setting Aging Time for Dynamic ARP Entries 552
Enabling the ARP Entry Check 553
Enabling the Support for ARP Requests from a Natural Network 553
ARP Configuration Example 553
Configuring Gratuitous ARP 554
Introduction to Gratuitous ARP 554
Configuring Gratuitous ARP 554
Configuring ARP Source Suppression 555
Introduction to ARP Source Suppression 555
Configuring ARP Source Suppression 555
Configuring Authorized ARP 555
Introduction to Authorized ARP 555
Configuring Authorized ARP 556
Example for Configuring Authorized ARP on a DHCP Server 556
Example for Configuring Authorized ARP on a DHCP Relay Agent 557
Displaying and Maintaining ARP 559
31
P
ROXY
ARP C
ONFIGURATION
Proxy ARP Overview 561
Enabling Proxy ARP 561
Displaying and Maintaining Proxy ARP 562
Proxy ARP Configuration Examples 562
Proxy ARP Configuration Example 562
Local Proxy ARP Configuration Example in Case of Port Isolation 563
32
DHCP O
VERVIEW
Introduction to DHCP 565