SNMP Interface

SNMP Protocols

SNMP Protocols

The Manager and Agent are software applications. They communicate with each other through several protocol layers that are normally transparent to the user (Figure C-3). The Access Navigator uses Ethernet as the physical link between the Manager and Agent. Ethernet can, in turn, be transport any TCP/IP data.

SNMP is an application-level protocol intended to work with the User Datagram Protocol (UDP) and Internet Protocol (IP) suite, which includes BootP, Internet Control Message Protocol (ICMP), Address Resolution Protocol (ARP), and Reverse ARP (RARP). The advantage of UDP is that each message is independent (connectionless), so no network connections are continuously maintained between the Manager and Agent.

Manager

(many paths are possible)

Agent

 

Telnet

SNMP

 

 

TCP

 

UDP

 

BootP

ICMP

IP

ARP

RARP

 

 

Ethernet

 

Figure C-3. SNMP Protocol Hierarchy Used in the Access Navigator

Access Navigator - Release 1.8

August 2003

C-7

Page 665
Image 665
Carrier Access Access Navigator user manual Snmp Protocols