Configuring Icmp Errors; Configuring Rip; Ripv1 - Avaya G250 Administration

Configuring ICMP errors

You can control whether the router sends Internet Control Message Protocol (ICMP) error
messages. The router sends an ICMP error message to the source of a packet if the router
rejects the packet. Use the following commands to configure ICMP errors:
Use the ip icmp-errors command to set ICMP error messages to ON. Use the no form
●
of this command to set ICMP error messages to OFF.
Use the show ip icmp command to display the status (enabled or disabled) of ICMP
●
error messages.

Configuring RIP

The Routing Information Protocol (RIP) enables routers to compute the path that an IP packet
should follow. Routers exchange routing information using RIP to determine routes that other
routers are connected to. OSPF is a newer protocol that serves a similar purpose. For more
information about OSPF, see
You can configure route redistribution between OSPF, RIP, and static routes. With route
redistribution, you can configure the G250/G350 to redistribute routes learned from one protocol
into the domain of the other routing protocol. For more information, see
page 441.
RIP is a distance vector protocol. The router decides which path to use on distance or the
number of intermediate hops. In order for this protocol to work correctly, all the routers, and
possibly the nodes, need to gather information on how to reach each destination in the Internet.
The very simplicity of RIP has a disadvantage however. This protocol does not take into account
network bandwidth, physical cost, and data priority. The Avaya G250/G350 Media Gateway
supports two versions of RIP:

RIPv1

●
RIPv2
●
RIPv1
RIPv1 is the original version of the RIP protocol. The RIPv1 protocol imposes some limitations
on the network design with regard to subnetting. When operating RIPv1, you must not configure
variable length subnetwork masks (VLMS). Each IP network must have a single mask, implying
that all subnetworks in a given IP network are of the same size. Also, when operating RIPv1,
you must not configure supernets. RIPv1 is defined in RFC 1058.
Configuring OSPF on page 439.
Configuring ICMP errors
Route redistribution
Issue 3 February 2007
on
435