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7-14

Optical Services Modules Installation and Configuration Note, 12.2SR

OL-9465-03

Chapter 7      Configuring the Channelized 12-port CT3/T1 Optical Services Modules

  Configuring the Interfaces

Configuring Multilink PPP Minimum Links Mandatory

To configure the Multilink PPP Minimum Links Mandatory feature, use the following commands in 
interface configuration mode:

This example shows how to configure the Multilink PPP Minimum Links Mandatory feature:

Router(config-if)# 

ppp multilink

Router(config-if)# 

multilink min-links 5 mandatory

For additional information about the Multilink PPP Minimum Links Mandatory feature, refer to this 
URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121

e11/12e_mlp.htm#xtocid0

The commands listed at this URL are all supported on the OSM-12CT3/T1, except the following:

multilink max-link

multilink load-threshold

multilink max-fragments

debug ppp multilink fragments

 

Verifying the Configuration

Use the 

show ppp multilink 

command to display information about the newly created multilink bundle:

Router# 

show ppp multilink

Multilink1, bundle name is group1

Bundle is Distributed

0 lost fragments, 0 reordered, 0 unassigned, sequence 0x0/0x0 rcvd/sent

0 discarded, 0 lost received, 1/255 load

Member links:4 active, 0 inactive (max not set, min not set)

Serial1/0/0:1

Creating a Multilink Interface Example

Interface multilink1

 ip address 100.0.0.1 255.255.255.0

interface serial6/12/1:0

 no ip address

 encapsulation ppp

Command

Purpose

Step 1

Router(config-if)# 

ppp multilink

Enables Multilink PPP.

Step 2

Router(config-if)# 

multilink min-links 

links 

mandatory

Specifies the required minimum number of links in a Multilink 
PPP (MLP) bundle. If the minimum number of links in the MLP 
bundle falls below the number specified by the 

links

 attribute, the 

MLP bundle is disabled.

links

—Minimum number of links, in the range 0 to 12.

The 

mandatory

 keyword is required on the OSM-12CT3/T1.

Содержание OSM-12CT1

Страница 1: ...ections on the same port with a maximum of 128 channels per DS3 port Each OSM 12CT3 T1 can support any combination of DS3 DS1 E1 T1s up to 1023 channels For example each port can support the following 1 DS3 at 44 7 Mbps 21 E1s at 2 048Mbps 28 DS1s at 1 5 Mbps 128 DS0s at 64 Kbps An unchannelized DS3 connection provides a single serial interface data channel that may be configured to use all of the...

Страница 2: ...y unused timeslots of the lines are filled with an idle channel pattern Unchannelized DS3 Overview In the unchannelized mode of operation a DS3 link provides a single high speed user data channel rather than being multiplexed into 28 DS1 or 21 E1 lines The data channel appears to the system as a serial interface that may be configured to use the full DS3 bandwidth or a smaller portion of the DS3 b...

Страница 3: ...T3 T1 module rather than the route processor The following dMLPP features are supported 336 bundles per module A maximum of 12 DS1 E1 channels per bundle All links in a bundle should operate at the same speed 100 ms of differential delay High Level Data Link Control HDLC Frame Relay Configure the OSM 12CT3 T1 interfaces for Frame Relay as described in the Cisco IOS Wide Area Networking Configurati...

Страница 4: ...ces Each serial interface is assigned one or more of the timeslots giving the serial interface a bandwidth of n x 56 kbps or n x 64 kbps where n is the number of timeslots assigned Any unused timeslots of the T1 are filled with an idle channel pattern E1 Configuration Options The E1 lines have the following configuration options Channelized E1 Any of the 21 E1 lines can be configured as channelize...

Страница 5: ...t contain individual timeslots and or ranges of timeslots uses only one of the 128 available logical channels For example if you assign the range of timeslots 3 7 to a channel group only one logical channel is used Likewise if you assign just timeslot 3 to a channel group only one logical channel is used DS3 Alarms This section lists the supported DS3 alarms Alarm indication signal AIS Out of fram...

Страница 6: ...ion on classification marking and queuing in IOS refer to the Classificiation chapter of the Cisco IOS Quality of Service Solutions Configuration Guide Release 12 1 at this URL http www cisco com univercd cc td doc product software ios121 121cgcr qos_c index htm For information about platform independent IOS QoS commands refer to the Cisco IOS Quality of Service Solutions Command Reference Release...

Страница 7: ... t1 configures the interfaces for T1 channelized mode channelized mode e1 configures the interfaces for E1 channelized mode Default is t1 Step 4 Router config controller no bert pattern 2 11 2 15 2 20 O 153 2 20 QRSS 2 23 0s 1s alt 0 1 interval 1 1440 Optional Configures bit error rate BER testing Step 5 Router config controller no mdl string eic fic generator lic pfi port unit Optional Specifies ...

Страница 8: ...terface serial slot port Specifies the serial port to configure Step 3 Router config if framing c bit m23 Specifies the framing Step 4 Router config if no dsu bandwidth Kilobits sec Sets the DSU subrate bandwidth Router config if no dsu mode 0 1 2 3 4 Specifies the DSU mode 0 Digital Link 1 Kentrox 2 Larscom 3 Adtran 4 Verilink Step 5 Router config if no dsu remote accept fullrate Specifies if the...

Страница 9: ...1 interfaces in addition to any DS3 interfaces configured on the three ports to which a framer is connected Note BERT channel groups and timeslots are also supported Configuring the T3 Controller for Channelization To configure the T3 controller for T1 of E1 channelization perform this task This example configures the T3 controller for T1 channelization mode Router configure terminal Enter configu...

Страница 10: ...ation mode Step 3 Router config controller no t1 t1 number channel group channel group number timeslots list of timeslots speed 56 64 Configures the channel group Step 4 Router config if no t1 t1 number framing sf esf Specifies the framing Step 5 Router config controller no t1 t1 number fdl ansi Optional Enables the once second transmission of the remote performance reports via facility data link ...

Страница 11: ... configuration mode and specifies that the console terminal is the source of the configuration subcommands Step 2 Router config controller slot port Selects the controller Step 3 Router config controller no channelized mode t1 e1 Specifies the channelization mode Default is t1 Step 4 Router config controller no e1 e1number clock source internal line Defines clock source for the specified E1 line S...

Страница 12: ...tion mode The following example shows how to create a multilink bundle Router config interface multilink 1 Router config if ip address 10 0 0 0 10 255 255 255 Router config if encapsulation ppp Router config if ppp multilink Router config if multilink group 1 Router config if CNTL Z Router Cisco 7200 Cisco 7600 with OSM 12CT3 DS0 PSTN Cisco 7200 Cisco 2500 Cisco 3800 T1s T1s CT3 CT3 Channelized T3...

Страница 13: ...imilar size we recommend disabling fragmentation In this case the benefits of fragmentation may be outweighed by the added load on the CPU Command Purpose Step 1 Router config interface serial slot port DS0 number channel group number Selects the interface Step 2 Router config if no ip address Removes any specified IP address Step 3 Router config if encapsulation ppp Enables PPP encapsulation Step...

Страница 14: ...nk load threshold multilink max fragments debug ppp multilink fragments Verifying the Configuration Use the show ppp multilink command to display information about the newly created multilink bundle Router show ppp multilink Multilink1 bundle name is group1 Bundle is Distributed 0 lost fragments 0 reordered 0 unassigned sequence 0x0 0x0 rcvd sent 0 discarded 0 lost received 1 255 load Member links...

Страница 15: ...erface serial6 12 3 0 no ip address encapsulation ppp ppp chap hostname mul1 multilink group 1 show ppp multilink Multilink1 bundle name is mul1 Bundle up for 19 58 37 Bundle is Distributed 0 lost fragments 0 reordered 0 unassigned 0 discarded 0 lost received 1 255 load 0x0 received sequence 0x0 sent sequence Member links 3 active 0 inactive max not set min not set Serial6 12 1 0 since 19 58 37 no...

Страница 16: ...7 16 Optical Services Modules Installation and Configuration Note 12 2SR OL 9465 03 Chapter 7 Configuring the Channelized 12 port CT3 T1 Optical Services Modules Configuring the Interfaces ...

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