chapter 10 ddr and isdn
TRANSCRIPT
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Training objective
DDR configuration
Learn about the DDR
Learn about ISDN technology
ISDN configuration
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DDRis the abbreviation of Dial-On-DemandRouting
DDRis applicable to PSTNandISDN
DDRis not a protocol and has no international standard
Brief introduction to DDR
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Physical interface
Dialer interface
Dial-up interface
Dial-up str ing
Dialer l ist
S tandard DDR
Flex ib le DDR
Nouns related to DDR
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DDR configuration preparations
Specify on which router and which interface to run
DDR
Specify the interface type
Specify whether to receive calls or initiate calls atthese interfaces
Select the standard DDR mode or flexible DDR mode
Configure DDR
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Configure Dialer-list
Configure an interface to initiate or receivecalls
Configure a DDR interface (including theconfiguration of Dialer interface)
Configure DDR-related parameters
Configuration of standard DDR
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Dialer Interface
1
Dialer Interface
2
Introduction to Dialer interface
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Configure a Dialer-list
dialer-list dialer-groupprotocol
protoco l -name { permit | deny }
Put a dial-up port into a Dialer-list
dialer-group group-number
Configure a Dialer-list
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Enable DDRdialer in-band
Set dialer string
Set the dialer string when initiating calls to a single point
dialer string dial-string[ isdn-address]
Set different dialer strings in terms of different destinations
dialer map protocol next-hop-address dialstr ing [ isdnsubaddress]
Define different rates for an ISDN interfacedialer map protocol next-hop-address[ speed 56 | speed 64 ] dialstring [
isdnsubaddress]
Configure an interface to initiate calls
Initiate calls to multipoints
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Configure usersusernamenamepassword 0/7password
Enter the physical interface configuration mode
interface interface-type interface-number
Enable DDR
dialer in-band
Encapsulate PPP
encapsulation ppp
Select a verification mode
ppp authentication { chap | pap }
Set the association between remote users and protocol addresses
dialer mapprotocol next-hop-addressnamehostname
Receive calls from multipoints
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Enable DDR
dialer in-band
Encapsulate a link layer protocol PPP
encapsulation pppIf authentication is needed, please select aauthentication mode and configure relatedparameters
Configure relationship between the remote
interface protocol address, user name and dial-upstring
dialer map p r o t o c o l nex t - hop - add r e s snameho s t n am e d i a l e r s t r i ng [ i s d n s u b a d d r e s s ]
Initiate calls to and receive calls frommultipoints
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Enable DDR
dialer in-band
Encapsulate a link layer protocol PPP
encapsulation pppIf authentication is needed, please select aauthentication mode and configure relatedparameters
Configure relationship between the remote
interface protocol address, user name and dial-upstring
dialer map p r o t o c o l nex t - hop - add r e s snameho s t n am e d i a l e r s t r i ng [ i s d n s u b a d d r e s s ]
Initiate calls to and receive calls frommultipoints
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Relations among various elements inflexible DDR
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Configure a dialer-list
Configure a dialer interface
Configure the characteristics of DDR for adialer interface
Configure a physical port
Configuration of a flexible DDR
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Create a dialer interfaceinterface dialernumber
Set an IP addressip addressaddress mask
Set PPP encapsulationencapsulation ppp
Enable a flexible DDR
dialer remote-namename
Configure a dialer interface
Set a dial-up stringdialer-stringstring
Set corresponding dialer pool numberdialer poolnumber
Set a dialer interface as belonging to a dialergroupdialer-groupnumber
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Set the idle time of a link
dialer idle-timeoutseconds
Set the idle time of a busy portdialer fast-idleseconds
Set the disconnection time of a linkdialer enable-timeoutseconds
Set the timefor the data need to wait for being sentdialer wait-for-carrier-timeseconds
Set the interval for automatic dialingdialer autodial-intervalseconds
Configure DDR features
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Enter the physical port configuration modeinterface interface-type interface-number
Encapsulate PPP
encapsulation ppp
Set the PPP authentication
ppp authentication chap | pap
Specify what dialer pool a port belongs to and setthe priority
dialer pool-membernumber[ priority priority ]
Configure a physical port
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Configure flow control at the dialer interface
dialer load-threshold load (configure flowcontrol threshold)
ppp multilink (configure MP)
Configure a physical interface with MP
ppp multilink
Configure the traffic detection cycle in theglobal configuration mode
flow-interval n minutes
Support of a flexible DDR for MP
C fi ti l f t d dDDR
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Configuration examples of a standard DDR(1)
RouterA RouterB
Tel:8810025 Tel:8810026
IP:10.110.0.1 IP:10.110.0.5
Modem Modem
PSTN
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RouterA
RouterC
Tel:8810029
Tel:8810027
IP:10.110.0.1
IP:10.110.0.3
Configuration examples of standard DDR (2)
Modem
Modem
RouterB
Tel:8810026
IP:10.110.0.2
PSTN
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RouterA
Tel:8810029
IP:10.110.0.1
Configuration examples of flexible DDR (1)
ModemModem
RouterB
Tel:8810026
IP:10.110.0.2
PSTN
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ConfigurationexamplesofaflexibleDDR
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RouterA
RouterC
Tel:8810148
Tel:8810163
Configuration examples of a flexible DDR(3)
Modem
Modem
RouterB
Tel:8810152
ISDN
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RouterA
Support of flexible DDR for MP
ISDN
NAS
163/169I n t e r n e t
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Monitorring and maintenance of DDR
Display DDR interface information
show dialer [interface type number]
Display any debugging information ofDDR
debug dialer event (Display DDR callset-up information)
debug dialer packet (Display DDRpacket sending information)
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Precautions in DDR configuration
dialer-group must be configured
Attention about some configurations aboutsynchronous/asynchronous serial interfacewhen DDR has been enabled on it
Configure a network layer address
In flexible DDR configuration mode,configure PPP when incoming calls arereceived
In standard DDR configuration mode,configure PPP when incoming calls are
O i f ISDN t h l
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ISDN is an all-digital service developed in
the 70s
ISDN provides end-to-end digital connection
ISDN protocol model of ITU-T
User-network interface specification of ISDN
Overview of ISDN technology
ISDN
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High bandwidth available(128K)
Dial-on-demand
Fast connection
High performance-price ratio
Security
PAP,CHAP and RADIUS
Household user
Access
Server
Server
Corp.Network
ISDN
ISDN
ISDN ( ti d)
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128kbps
2B
D 16k
64k*230B
D
2Mbps
64k*
64k
asic ra te in ter face
BRI )
Single physical connection
Two logic connections
Applicable to client
Pr im ary rate in ter face(PRI)
Single physical ocnnection
30 logic connections
Applicable to central nodes
ISDN (continued)
ISDN t l d l f ITU T
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M
C
U
ISDN protocol model of ITU-T
User-networkinterfacespecificationof
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TE2 TA
TE1 NT2 NT1
12345
Usernetwork interface specification ofISDN
Configure ISDN BRI interface
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Run IP network protocol on ISDN BRI interface
Run IPX network protocol on ISDN BRI interface
Access Internet via ISDN BRI interface
Configure ISDN BRI interface
RunIPprotocolon ISDNBRI
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Configure ISDNprotocol parameters
Configure IP address on ISDN BRI interface
Configure call destination
Configure encapsulation link layer protocol and authentication
Configure Dialer Group and Dialer List used to activate calls
Configure DDR parameters
Configure t IP routing informations
Run IP protocol on ISDN BRIinterface
Configuration examples
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Configuration examples
Remote Site
Central Site
ISDN
R n IPXprotocolonISDNBRIinterface
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Configure ISDNprotocol operational parameters
Enable IPX
Configure the IPX network nuber of the ISDN BRI interface
Configure outgoing Dialer Map to a destination
Configure link layer encapsulation protocol PPP and authenticationConfigure Dialer Group and Dialer List to activate calls
Configure DDR operational parameters
Run IPX protocol on ISDN BRI interface
Configure ISDN Protocol
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Configure called number or subsidiary address
to be checked of digital incoming calls
Configure called number or subsidiary addressto be checked of analog incoming calls
Configure ISDN Protocol
Monitoring and maintenance of ISDN
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Display call information currently
activated
Display the called number and
subaddress to be checkedDisplay current status of an ISDN
interface
Display the value of an ISDN timer
Display the type of an ISDN interface
gprotocol
Key points in this chapter
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Learn about basic principle DDR
Master the basic configurations of DDRLearn about ISDN technology
Master the basic configurations of ISDN
Key points in this chapter