Answers to the Chapter 6 "Do I Know This Already?" Quiz 747
9
Describe the metric(s) used by IPX RIP in a Cisco router.
The primary metric is a counter of timer ticks. If two routes to the same network tie with
the ticks metric, the hop count is considered. Ticks are increments of 1/18ths of a second.
The number of ticks is not measured but is set with defaults of 1 on LAN interfaces and 6
on WAN interfaces. The IPX delay interface subcommand overrides the defaults.
10
What does GNS stand for? Who creates GNS requests, and who creates GNS replies?
GNS stands for Get Nearest Server. Clients create the request, which is a broadcast
looking for a nearby server. Servers and routers reply, based on their SAP table, with the
IPX address of a server whose RIP metric is low.
11
If Serial0 has a bandwidth 1544 interface subcommand and Serial1 has a bandwidth 56
interface subcommand, what metric will IPX RIP associate with each interface?
The IOS is unaffected by an interface's bandwidth when considering IPX RIP metrics;
ticks will default to 6 for any serial interface, regardless of bandwidth setting.
12
What show commands list IPX RIP metric values in a Cisco router?
show ipx route
show ipx servers
This is a trick question. The services listed by the show ipx servers command also contain
a reference to the RIP metrics; the information is handy when looking for good servers for
a GNS reply.
13
Define the term integrated multiprotocol routing in the context of the Cisco IOS and Novell
IPX.
Integrated multiprotocol routing means that multiple routed protocols use a common
routing protocol, which consolidates routing updates. EIGRP is the only such routing
protocol covered in the recommended training path for CCNAs; EIGRP exchanges
routing information for IP, IPX, and AppleTalk. IGRP and Integrated IS-IS support both
IP and OSI CLNS routable protocols.
14
What routing protocols support integrated multiprotocol routing?
EIGRP supports integrated multiprotocol routing for IP, IPX, and AppleTalk. IGRP and
Integrated IS-IS support integrated multiprotocol routing for IP and OSI CLNS.
apA.fm Page 747 Monday, March 20, 2000 5:24 PM