All Cisco-Network Study Notes: Protocols and Standards

This area lists added capacity and facts to annular out the advantage of the capacity in this chapter.

Unlike best of the Cisco Press Assay Certification Guides, this “Foundation Summary” does not

repeat advice presented in the “Foundation Topics” area of the chapter. Please booty the

time to apprehend and abstraction the capacity in the “Foundation Topics” area of the chapter, as able-bodied as

review items acclaimed with a Key Topic icon.

Table 5-5 lists the protocols mentioned in this affiliate and their corresponding standards documents.

Table 5-6 lists some of the best accepted Cisco IOS commands accompanying to the capacity in this chapter.

Table 5-5 Protocols and Standards for Affiliate 5

Name Standardized In

ARP RFC 826

Proxy ARP RFC 1027

RARP RFC 903

BOOTP RFC 951

DHCP RFC 2131

DHCP FQDN advantage Internet-Draft

HSRP Cisco proprietary

VRRP RFC 3768

GLBP Cisco proprietary

CDP Cisco proprietary

NTP RFC 1305

Syslog RFC 3164

SNMP Adaptation 1 RFCs 1155, 1156, 1157, 1212, 1213, 1215

SNMP Adaptation 2 RFCs 1902–1907, 3416

SNMP Adaptation 2c RFC 1901

SNMP Adaptation 3 RFCs 2578–2580, 3410–3415

Good Starting Point: RFC 3410

Foundation Arbitrary 149

Table 5-6 Command Reference for Affiliate 5

Command Description

ip dhcp basin name Creates DHCP pool

default-router abode [address2...address8] DHCP basin subcommand to account the gateways

dns-server abode [address2...address8] DHCP basin subcommand to account DNS servers

lease {days [hours][minutes] | infinite} DHCP basin subcommand to ascertain the lease

length

network network-number [mask | prefix-length] DHCP basin subcommand to ascertain IP

addresses that can be assigned

ip dhcp excluded-address [low-address highaddress]

DHCP basin subcommand to abjure these

addresses from actuality assigned

host abode [mask | prefix-length] DHCP basin subcommand, acclimated with

hardware-address or client-identifier, to

predefine a distinct host’s IP address

hardware-address hardware-address blazon DHCP basin subcommand to ascertain MAC

address; works with host command

show ip dhcp bounden [ip-address] Lists addresses allocated by DHCP

show ip dhcp server statistics Lists stats for DHCP server operations

standby [group-number] ip [ip-address

[secondary]]

Interface subcommand to accredit an HSRP

group and ascertain the basal IP address

track object-number interface type-number

{line-protocol | ip routing}

Configures a tracking article that can be used

by HSRP, VRRP, or GLBP to clue the status

of an interface

standby [group-number] accroach [delay

{minimum adjournment | reload adjournment | accompany delay}]

Interface subcommand to accredit pre-emption

and set adjournment timers

show clue [object-number [brief] | interface

[brief] | ip avenue [brief] | resolution | timers]

Displays cachet of tracked objects

standby [group-number] antecedence antecedence Interface subcommand to set the HSRP group

priority for this router

standby [group-number] timers [msec] hellotime

[msec] holdtime

Interface subcommand to set HSRP group

timers

standby [group-number] clue object-number Interface subcommand to accredit HSRP to

track authentic objects, usually for the purpose

of switching alive routers on an accident related

to that object

show standby [type cardinal [group]] [brief | all] Lists HSRP statistics

ntp associate ip-address [version number] [key keyid]

[source interface] [prefer]

Global command to accredit symmetric active

mode NTP

150 Affiliate 5: IP Services

Memory Builders

The CCIE Acquisition and Switching accounting exam, like all Cisco CCIE accounting exams, covers a fairly

broad set of topics. This area provides some basal accoutrement to advice you exercise your anamnesis about

some of the broader capacity covered in this chapter.

Command Description

ntp server ip-address [version number] [key

keyid] [source interface] [prefer]

Global command to accredit changeless applicant mode

NTP

ntp advertisement [version number] Interface subcommand on an NTP server to

cause NTP broadcasts on the interface

ntp advertisement applicant Interface subcommand on an NTP applicant to

cause it to accept for NTP broadcasts

ntp adept [stratum] Global command to accredit NTP server

show ntp associations Lists associations with added NTP servers and

clients

show ntp cachet Displays synchronization status, stratum

level, and added basal information

logging allurement akin Sets the severity akin for Syslog messages;

arguments are 0–7, area 0=emergencies,

1=alerts, 2=critical, 3=errors, 4=warnings,

5=notifications, 6=informational,

7=debugging (default)

logging host {{ip-address | hostname} | {ipv6

ipv6-address | hostname}} [transport {udp [port

port-number] | tcp [port port-number]}] [alarm

[severity]]

Configures the IP or IPv6 abode or

hostname to which to accelerate Syslog messages

and permits ambience the carriage agreement and

port number

ip wccp {web-cache | service-number} [servicelist

service-access-list] [mode {open | closed}]

[group-address multicast-address] [redirect-list

access-list] [group-list access-list] [password [0-

7] password]

Enables WCCP and configures clarification and

service parameters

ip wccp {web-cache | service-number} redirect

{in | out}

Interface agreement command to enable

WCCP and configure it for outbound or

inbound service

show ip wccp Displays WCCP agreement settings and

statistics

Table 5-6 Command Reference for Affiliate 5 (Continued)

Memory Builders 151

Fill in Key Tables from Memory

Appendix E, “Key Tables for CCIE Study,” on the CD in the aback of this book contains abandoned sets

of some of the key arbitrary tables in anniversary chapter. Print Appendix E, accredit to this chapter’s tables

in it, and ample in the tables from memory. Accredit to Appendix F, “Solutions for Key Tables for CCIE

Study,” on the CD to analysis your answers.

Definitions

Next, booty a few moments to abode bottomward the definitions for the afterward terms:

HSRP, VRRP, GLBP, ARP, RARP, proxy ARP, BOOTP, DHCP, NTP symmetric active

mode, NTP server mode, NTP applicant mode, NTP, basal IP address, VRRP Adept router,

SNMP agent, SNMP manager, Get, GetNext, GetBulk, MIB-I, MIB-II, Response, Trap,

Set, Inform, SMI, MIB, MIB walk, advance agreeable engine

Refer to the comment to analysis your answers.