Enterasys atx Betriebsanweisung
1-22
Introduction
private/enterprise/sigma/ecs1/admin/config. The default setting for
this MIB is 0. Query the MIB and change this value to the address
of the SNMP management station, then SET. If the
[configNMSAddress] MIB is not changed, traps are sent to the last
SNMP manager which polled the device.
this MIB is 0. Query the MIB and change this value to the address
of the SNMP management station, then SET. If the
[configNMSAddress] MIB is not changed, traps are sent to the last
SNMP manager which polled the device.
1.8.1 IP Routing
IP routing allows end-nodes to send packets to end-nodes
elsewhere on the network using the IP protocol suite. The ATX
builds an IP routing table that stores destination addresses, the
address of the gateway through which that destination can be
reached, and the number of hops it takes to get there. (The number
of hops is the number of other routers or gateways a packet must
go through to get to the gateway.) The routing table allows the ATX
to know how to route a packet to reach its destination address.
elsewhere on the network using the IP protocol suite. The ATX
builds an IP routing table that stores destination addresses, the
address of the gateway through which that destination can be
reached, and the number of hops it takes to get there. (The number
of hops is the number of other routers or gateways a packet must
go through to get to the gateway.) The routing table allows the ATX
to know how to route a packet to reach its destination address.
The routing table is a dynamic table, meaning that entries are
continually being added and timed-out based on information the
ATX is receiving.
continually being added and timed-out based on information the
ATX is receiving.
Routing Information Protocol (RIP)
RIP is one of the protocols that allows the ATX to build an accurate,
current routing table. Routers, including the ATX, send out
broadcasts every 30 seconds advertising the networks they know
about, the routes to those networks, and the number of hops to get
there. In this way the ATX is constantly up-to-date on the state of
its neighboring networks.
current routing table. Routers, including the ATX, send out
broadcasts every 30 seconds advertising the networks they know
about, the routes to those networks, and the number of hops to get
there. In this way the ATX is constantly up-to-date on the state of
its neighboring networks.
Address Resolution Protocol (ARP)
ARP provides a method for mapping IP addresses to physical
hardware addresses. When a device wants to communicate with
another device whose hardware address it doesn’t know, it sends
out an ARP request. An ARP request contains the IP and hardware
addresses of the source, and the IP address of the potential
hardware addresses. When a device wants to communicate with
another device whose hardware address it doesn’t know, it sends
out an ARP request. An ARP request contains the IP and hardware
addresses of the source, and the IP address of the potential