Installing and Configuring the Cisco SLT

Installing the Cisco SLT Software

Configuring the Cisco SLT

Configuring the Basic Parameters

Configuring the Physical Interfaces

Configuring the T1/E1 Multiflex Trunk Interfaces

Configuring Drop and Insert

Verifying T1/E1 Multiflex Trunk Interface Configuration

Configuring the Serial Interfaces

Configuring the Ethernet Interface

Verifying the Ethernet Interface Configuration

Configuring the Session Manager and Reliable User Datagram Protocol

Verifying the Session Manager and RUDP Configuration

Configuring the MTP2 Variant

Where to Go Next

Installing and Configuring the Cisco SLT

This chapter provides a brief overview of installing and configuring the Cisco SLT, including the following sections:

Note If you are not using Cisco SLTs to terminate signaling links, and are using ITK cards, skip this chapter and proceed to "Installing the Sun Solaris 2.6 Operating System."

For more information, refer to the following documents:

Cisco Media Gateway Controller Hardware Installation Guide--Provides instructions for installing the Cisco SLT hardware. Refer to Chapter 3, "Hardware Installation Instructions."
Cisco Media Gateway Controller Software Release 7 Installation and Configuration Guide--Provides instructions for installing the Cisco SLT software. Refer to Chapter 3, "Installing the Cisco Signaling Link Terminal."
Cisco Signaling Link Terminal--Provides additional information about the Cisco SLT. Available at the following URL:

: http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/ios_feat/
0219nomd.htm

Note The latest versions of these documents are always posted to CCO. Verify that you have the latest version of the documentation before beginning any procedures.

Installing the Cisco SLT Software

The Cisco 2611 router must be running special Cisco IOS software to function as a Cisco SLT and terminate SS7 signaling links. For information on which Cisco IOS releases can be used in the Cisco SS7 Interconnect for Access Servers Solution, refer to the latest version of the Release Notes for Cisco Telephony Controller Software Release 7.3(x) or Release Notes for Cisco Media Gateway Controller Software Release 7.4(x) (available from your Cisco representative).

Note When used as a Cisco SLT, the Cisco 2611 has SS7 functionality only. All standard Cisco 2611 software features are disabled when running the Cisco SLT image.

To copy a system image from a Trivial File Transfer Protocol (TFTP) server to a Flash memory file system, enter the following command in privileged mode:

copy tftp:[[[//location]/directory]/filename] flash-filesystem:[filename]

Note For more information about Cisco IOS software, upgrades, and downloading images from the web, see Cisco SS7 Interconnect for Access Servers and Voice Gateways Solutions Gateway Guide. See also Loading and Maintaining System Images and Microcode at the following url: http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/fun_c/fcprt2/
fcimages.htm

Configuring the Cisco SLT

This section contains the following procedures:

Configuring the Basic Parameters

Note Perform the following steps on each Cisco SLT in your solution.

To configure the basic parameters of the Cisco SLT, complete the following steps:

Step 1 Power on the Cisco SLT:

Note Do not press any keys until the system messages stop. Any keys pressed during this time are interpreted as the first command, which might cause the Cisco SLT to power off and start over. It takes a few minutes for these messages to stop.

Step 2 When the following message appears, enter y (yes) to begin the initial configuration dialog:

Would you like to enter the initial configuration dialog? [yes/no]: y

Tips At any point you may enter a question mark for help. Use Ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets.

Step 3 At the following prompt, type y (yes) and press Enter to enter basic management setup:

Would you like to enter basic management setup? [yes/no]: y
Configuring global parameters:

Note Basic management setup provides only enough connectivity for management of the system. Extended setup will ask you to configure each interface on the system.

Step 4 Enter the host name for the Cisco SLT:

Enter host name [Router]: router_name

Step 5 Type an enable_secret password. This password is encrypted for security and cannot be seen in the configuration. The enable_secret password is used to protect access to privileged EXEC and configuration modes. After you enter it, enable_secret is encrypted in the configuration.

Enter enable secret: enable_secret

Step 6 Type an enable_password that is different from the enable_secret password. This password is not encrypted and therefore less secure than the enable_secret password, and can be seen in the configuration. The enable_ password is used when you do not specify an enable_secret password, with some older software versions, and with some boot images.

Enter enable password: enable_password

Step 7 Type a virtual terminal password (vt_password) to prevent unauthenticated access to the Cisco SLT through ports other than the console port. The vt_password is used to protect access to the router over a network interface.

Enter virtual terminal password: vt_password

Step 8 Type yes and press Enter to begin configuring SNMP parameters:

Configure SNMP Network Management? [yes]: yes
            Community string [public]:

Step 9 Type the interface name used to connect to the management network and press Enter:

Current interface summary
 
Controller Timeslots D-Channel Configurable modes Status
T1 0/2     24        23        pri/channelized    Administratively up
T1 0/3     24        23        pri/channelized    Administratively up
 
Any interface listed with OK? value "NO" does not have a valid configuration
 
Interface                  IP-Address      OK? Method Status Protocol
Ethernet0/0                unassigned      NO  unset  up up      
Serial0/0                  unassigned      NO  unset  down                  down    
Ethernet0/1                unassigned      NO  unset  up                    down    
Serial0/1                  unassigned      NO  unset  down                  down    
 
Enter interface name used to connect to the management network from the above interface summary: Ethernet0/0

Step 10 Type y and press Enter to begin configuring Ethernet interface paramters for the IP address and subnet mask:

Configuring interface Ethernet0/0:
Configure IP on this interface? [yes]: y

Step 11 Type the IP address and the subnet mask for the Ethernet interface:

IP address for this interface: 10.1.1.5     
Subnet mask for this interface [255.0.0.0]: 255.255.0.0
Class A network is 10.0.0.0, 16 subnet bits; mask is /16

Step 12 Save your configuration to NVRAM and exit the Initial Configuration Mode. The following message text and prompt appears:

The following configuration command script was created:
 
hostname aladdin
enable secret 5 $1$0gLU$vLK1YHrMcianH5oVWFJNP/
enable password lablab
line vty 0 4
password lab
no snmp-server
!
no ip routing
!
interface Ethernet0/0
no shutdown
ip address 10.1.1.5 255.255.0.0
!
interface Serial0/0
shutdown
no ip address
!
interface Ethernet0/1
shutdown
no ip address
!
interface Serial0/1
shutdown
no ip address
!
end
 
[0] Go to the IOS command prompt without saving this config.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.
Enter your selection [2]: 2
Building configuration...
Use the enabled mode 'configure' command to modify this configuration.
 
Press RETURN to get started!

Step 13 If you do not see a # prompt at the end of the text, press Enter.

Step 14 At the command prompt, type each of the following commands and press Enter to access global configuration mode:

enable password
config t

This completes the basic Cisco SLT configuration. Continue to the next section to configure the physical interfaces.

Configuring the Physical Interfaces

This section contains the following procedures:

Configuring the T1/E1 Multiflex Trunk Interfaces

The T1/E1 multiflex trunk interface cards are dual-mode T1 or E1 interfaces in a VWIC (Voice/WAN Interface Card) form for voice, data, and integrated voice/data applications. They support the
SS7 Cisco SLT function, as do serial WICs.

The T1/E1 VWIC supports the following T1/E1 functionality:

Single or dual port, structured or unstructured T1/E1 functionality
Drop and Insert (also called TDM Cross-Connect) between the T1/E1 ports on dual-port cards, used to hairpin bearer channels to a media gateway device and allow the interchange of time-division multiplexing (TDM) slots between the ports on a two-port card
Physical layer alarm forwarding between the two E1/T1 ports on dual-port cards

For additional information about the T1/E1 multiflex trunk interface cards and configuring other types of WICs, see Cisco WAN Interface Cards Hardware Installation Guide.

Note For serial WICs, no particular configuration is required, except to ensure that the interfaces are not shut down.

To configure the T1/E1 multiflex trunk interfaces of the Cisco SLT, complete the following steps:

Step 1 To start global configuration mode, type the following command and press Enter:

Router# configure terminal

Step 2 To start controller configuration mode for the T1 controller at the specified slot/port location, type the following command and press Enter:

Router(config)# controller {T1 | E1} 0/port

Where:

The value for slot is always 0.
The port value can be a number 0 through 3.

Note For information about WAN interface slot and port numbering, see Cisco WAN Interface Cards Hardware Installation Guide.

Step 3 To set framing, type one of the following commands (for either T1 or E1) and press Enter:

T1 Interface
E1 Interface

Router(config-controller)# framing esf
Router(config-controller)# framing crc4

T1 Interface	E1 Interface
`Router(config-controller)#` framing esf	`Router(config-controller)#` framing crc4

Step 4 To set line coding, type one of the following commands (for either T1 or E1) and press Enter:

T1 Interface
E1 Interface

Router(config-controller)# linecode b8zs
Router(config-controller)# linecode hdb3

T1 Interface	E1 Interface
Router`(config`-controller`)#` linecode b8zs	Router`(config-controller)#` linecode hdb3

Note The settings above are the most common settings. Consult your service provider and Wide Area Network Configuration Guide for more information.

Step 5 This command specifies the impedance (amount of wire resistance and reactivity to current) for the E1 termination. Impedance levels are maintained to avoid data corruption over long-distance links. To enter a line-termination value for an E1 link, type one of the following commands and press Enter:

T1 Interface
E1 Interface

This parameter is for E1 interfaces, only.

Router(config-controller)# line-termination {75-ohm | 120-ohm}

Specify 120-ohm to match the balanced 120-ohm interface. This is the default.

Specify 75-ohm for an unbalanced BNC 75-ohm interface.

T1 Interface	E1 Interface
This parameter is for E1 interfaces, only.	Router(config-controller)# line-termination {75-ohm \| 120-ohm} Specify 120-ohm to match the balanced 120-ohm interface. This is the default. Specify 75-ohm for an unbalanced BNC 75-ohm interface.

Step 6 To set the cable length, type one of the following commands and press Enter:

T1 Interface
E1 Interface

To set a cable length longer than 655 feet, type the following command and press Enter, using the appropriate parameters as shown below:

Router(config-controller)# cablelength long {gain26 | gain36} {-15db | -22.5db | -7.5db | 0db}

gain26--Specifies the decibel pulse gain at 26. This is the default pulse gain.

gain36--Specifies the decibel pulse gain at 36.

-15db--Specifies the decibel pulse rate at -15 decibels.

-22.5db--Specifies the decibel pulse rate at -22.5 decibels.

-7.5db--Specifies the decibel pulse rate at -7.5 decibels.

0db--Specifies the decibel pulse rate at 0 decibels. This is the default pulse rate.

To set a cable length 655 feet or shorter, type the following command and press Enter, using the appropriate parameters as shown below:

Router(config-controller)# cablelength short
{133 | 266 | 399 | 533 | 655}

133--Specifies a cable length from 0-133 feet.

266--Specifies a cable length from 134-266 feet.

399--Specifies a cable length from 267-399 feet.

533--Specifies a cable length from 400-533 feet.

655--Specifies a cable length from 534-655 feet.

NoteIf you do not set the cable length, the system defaults to a setting of cablelength long gain26 0db.

This parameter is for T1 interfaces, only.

Step 7 Specify the channel group and time slots to be mapped. Channel group 0 or 1 can be configured. Generally, only one time slot is configured when you are using the Cisco SLT feature, as is shown in this example where time slot 24 is used for a T1 interface and time slot 16 is used for an E1 interface. A channel group creates a virtual serial interface. It is designated slot/port:subinterface, as follows:

slot is the slot location of the WIC/VWIC where the channel group was created (0 or 1).
port is the WIC/VWIC port address (a number from 0 through 3)
subinterface is the channel group number (0 or 1)

To specify the channel group and time slots to be mapped, type one of the following commands and press Enter:

T1 Interface
E1 Interface

Router(config-controller)# channel-group 0 timeslots 24
Router(config-controller)# channel-group 0 timeslots 16

T1 Interface	E1 Interface
Router`(config-controller)#` channel-group 0 timeslots 24	Router`(config-controller)#` channel-group 0 timeslots 16

Step 8 If necessary, repeat Step 2 through Step 7 to configure the remaining Cisco SLT interfaces.

Step 9 To exit controller configuration mode, type the following command and press Enter:

Router(config-controller)# exit

Configuring Drop and Insert

To configure Drop and Insert (the TDM cross-connect function), complete the following steps:

Step 1 To begin global configuration mode, type the following command and press Enter:

Router# configure terminal

Step 2 To begin controller configuration mode for the T1 controller at the specified slot/port location, type the following command and press Enter:

Router(config)# controller {T1 | E1} 0/port

Where:

The value for slot is always 0.
The port value is a number from 0 through 3.

Note For information about WAN interface slot and port numbering, see Cisco WAN Interface Cards Hardware Installation Guide.

Step 3 Enter this command to create TDM channel groups for the Drop-and-Insert function with a two-port T1 or E1 multiflex trunk interface card. You must set up a TDM group for each interface that you wish to cross-connect. To create TDM channel groups, type the following command and press Enter:

Router(config-controller)# tdm-group tdm-group-no timeslots timeslot-list

Where:

tdm-group-no is a value from 1 through 31 that identifies the channel group. Group numbers for controller groups must be unique. For example, a TDM group should not have the same ID number as a channel group.
timeslot-list is a single number, numbers separated by commas, or a pair of numbers separated by a hyphen to indicate a range of time slots. For T1, allowable values are 1 through 24. For E1, allowable values are 1 through 31. In come cases, 16 is reserved for signaling; in others, 1 can be reserved. For example:

channel-group 0 timeslots 1
tdm-group 1 timeshots 2-31

Note You must set up a TDM group for each interface that you wish to cross-connect.

Step 4 To activate the controller, type the following command and press Enter:

Router(config-controller)# no shutdown

Step 5 Repeat Step 3 and Step 4 for the second interface.

Step 6 To exit controller configuration mode, type the following command and press Enter:

Router(config-controller)# exit

Step 7 To establish the connection between two T1 or E1 TDM groups of time slots on the trunk interface, type the following command and press Enter:

Router(config)# connect id T1 slot/port tdm-group-no-1 T1 slot/port tdm-group-no-2

Where:

id is a name for the connection.
Each T1 controlleris identified by its slot/port location:
- The slot value is always 0.
- The port value can be a number from 0 through 3.
tdm-group-no-1 and tdm-group-no-2 identify the TDM group numbers (1 through 31) on the specified controller. (You already set up groups in Step 3.)

Step 8 To exit global configuration mode, type the following command and press Enter:

Router(config)# exit

Verifying T1/E1 Multiflex Trunk Interface Configuration

To verify the initial T1/E1 trunk interface configuration, complete the following steps:

Step 1 Enter the privileged EXEC show controllers t1 or show controllers e1 command; for example, show controllers e1 or show controllers t1.

Following is sample output from both commands. Important information appears in bold:

Router# show controllers e1
E1 0/2 is up.
  Applique type is Channelized E1 - balanced
  Cablelength is Unknown
  No alarms detected.
  Version info Firmware: 19990702, FPGA: 6
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  Data in current interval (599 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Total Data (last 10 15 minute intervals):
     435334 Line Code Violations, 1 Path Code Violations,
     8 Slip Secs, 69 Fr Loss Secs, 9 Line Err Secs, 0 Degraded Mins,
     8 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 69 Unavail Secs
E1 0/3 is down.
  Applique type is Channelized E1 - balanced
  Cablelength is Unknown
  Far End Block Errors Detected
  Receiver has loss of signal.
  Version info Firmware: 19990702, FPGA: 6
  Framing is CRC4, Line Code is HDB3, Clock Source is Line.
  Data in current interval (602 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 602 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 603 Unavail Secs
  Total Data (last 10 15 minute intervals):
     0 Line Code Violations, 0 Path Code Violations,
     0 Slip Secs, 9000 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 9000 Unavail Secs

Router# show controllers t1
T1 0/0 is up.
  Applique type is Channelized T1
  Cablelength is short 133
  No alarms detected.
  Version info Firmware: 19990702, FPGA: 6
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.
  Data in current interval (608 seconds elapsed):
     136066 Line Code Violations, 778727 Path Code Violations
     567 Slip Secs, 0 Fr Loss Secs, 608 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 608 Unavail Secs
  Total Data (last 10 15 minute intervals):
     4286812 Line Code Violations, 11478885 Path Code Violations,
     7734 Slip Secs, 69 Fr Loss Secs, 8996 Line Err Secs, 0 Degraded Mins,
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 9000 Unavail Secs

Step 2 To view channel groups configured as virtual serial interfaces, type the show interface serial slot/port:subinterface command and press Enter:

Router# show interface serial 0/0:0

The following text appears:

Serial0/0:0 is reset, line protocol is down
  Hardware is PowerQUICC Serial
  MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
     reliability 253/255, txload 1/255, rxload 1/255
  Encapsulation SS7 MTP2, loopback not set
  Keepalive set (10 sec)
  Last input never, output 00:12:22, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0 (size/max/drops); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/0/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     1437 input errors, 2 CRC, 31 frame, 0 overrun, 0 ignored, 1404 abort
     128055 packets output, 512220 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 output buffer failures, 0 output buffers swapped out
     1 carrier transitions
  Timeslot(s) Used:1, Transmitter delay is 0 flags

Step 3 To view information about the virtual serial interface, type the show controllers serial slot/port:subinterface command and press Enter:

Router# show controllers serial 0/2:0

The following text appears:

Interface Serial0/2:0
Hardware is PowerQUICC MPC860idb at 0x81143590, driver data structure at 0x81145
474
SCC Registers:
General [GSMR]=0x2:0x00000033, Protocol-specific [PSMR]=0x8
Events [SCCE]=0x0200, Mask [SCCM]=0x001F, Status [SCCS]=0x02
Transmit on Demand [TODR]=0x0, Data Sync [DSR]=0x7E7E
Interrupt Registers:
Config [CICR]=0x00367F80, Pending [CIPR]=0x04000246
Mask   [CIMR]=0x60240000, In-srv  [CISR]=0x00000000
Command register [CR]=0xD40
Port A [PADIR]=0x00F0, [PAPAR]=0x25F0
       [PAODR]=0x0000, [PADAT]=0x5A4F
Port B [PBDIR]=0x0000F, [PBPAR]=0x0000E
       [PBODR]=0x00000, [PBDAT]=0x37FFD
Port C [PCDIR]=0x00C, [PCPAR]=0xA00
       [PCSO]=0x000,  [PCDAT]=0x5F2, [PCINT]=0xFFF
Receive Ring
        rmd(68012930): status 9000 length 6 address 2DA22E4
        rmd(68012938): status 9000 length 6 address 2DA3AA4
        rmd(68012940): status 9000 length 6 address 2DA1E24
        rmd(68012948): status 9000 length 6 address 2DA27A4
        rmd(68012950): status 9000 length 6 address 2DA5724
        rmd(68012958): status 9000 length 6 address 2DA14A4
        rmd(68012960): status 9000 length 6 address 2DA5264
        rmd(68012968): status 9000 length 6 address 2DA4684
        rmd(68012970): status 9000 length 6 address 2DA4424
        rmd(68012978): status 9000 length 6 address 2DA1964
        rmd(68012980): status 9000 length 6 address 2DA4B44
        rmd(68012988): status 9000 length 6 address 2DA60A4
        rmd(68012990): status 9000 length 6 address 2DA2544
        rmd(68012998): status 9000 length 6 address 2DA3124
        rmd(680129A0): status 9000 length 6 address 2DA0FE4
        rmd(680129A8): status B000 length 6 address 2DA3844
Transmit Ring
        tmd(680129B0): status DC00 length 4 address 2AD9EA8
        tmd(680129B8): status DC00 length 4 address 2AD7568
        tmd(680129C0): status DC00 length 4 address 2ADA428
        tmd(680129C8): status DC00 length 4 address 2ADA6E8
        tmd(680129D0): status DC00 length 4 address 2AD7DA8
        tmd(680129D8): status DC00 length 4 address 2AD5468
        tmd(680129E0): status DC00 length 4 address 2AD8328
        tmd(680129E8): status DC00 length 4 address 2AD85E8
        tmd(680129F0): status DC00 length 4 address 2AD5CA8
        tmd(680129F8): status CE00 length 4 address 2AD8B68
        tmd(68012A00): status DC00 length 4 address 2AD8E28
        tmd(68012A08): status DC00 length 4 address 2AD64E8
        tmd(68012A10): status DC00 length 4 address 2AD67A8
        tmd(68012A18): status DC00 length 4 address 2AD9668
        tmd(68012A20): status DC00 length 4 address 2AD9928
        tmd(68012A28): status FC00 length 4 address 2AD6FE8
SPI Mode [SPMODE]=0xF70, Events [SPIE]=0x0
    Mask [SPIM]=0x0, Command [SPCOM]=0x0
SI Mode [SIMODE]=0x80408040, Global [SIGMR]=0xE
   Cmnd [SICMR]=0x0, Stat [SISTR]=0x0
SI Clock Route [SICR]=0x00004040
 
SCC GENERAL PARAMETER RAM (at 0x68013D00)
Rx BD Base [RBASE]=0x2930, Fn Code [RFCR]=0x18
Tx BD Base [TBASE]=0x29B0, Fn Code [TFCR]=0x18
Max Rx Buff Len [MRBLR]=1548
Rx State [RSTATE]=0x0, BD Ptr [RBPTR]=0x2970
Tx State [TSTATE]=0x188920A3, BD Ptr [TBPTR]=0x2A08
 
SCC SS7 PARAMETER RAM (at 0x68013D38)
CRC Preset [C_PRES]=0xFFFF, Mask [C_MASK]=0xF0B8
Error-free SUs [EFSUC] = 22927
Max frm len [MFLR] = 278
Erm [ERM] = 0x0,N [NOCTETS] = 16, N_cnt [NOCTETS_CNT] = 12, T [ERM_THRESH] = 64,
 D [ERM_EFSUS] = 256, D_cnt [ERM_EFSUS_CNT] = 97
SS7 options [SS7_OPT] = 0x10F
Filter masks [MASK1] = 0xFFFFFFFF, [MASK2] = 0xFF
 
buffer size 1524
PQUICC SCC specific errors:
0 input aborts on receiving flag sequence
0 throttles, 0 enables
0 overruns
0 transmitter underruns
0 transmitter CTS losts

Configuring the Serial Interfaces

To configure the 1T and 2T serial interfaces, complete the following steps:

Step 1 To begin global configuration mode, type the following command and press Enter:

Router# configure terminal

Step 2 To begin interface configuration mode for the serial interface, type the following command and press Enter:

Router(config)# interface serial 0/2

Step 3 To activate the interface, type the following command and press Enter:

Router(config-if)# no shutdown

Step 4 To exit serial interface configuration mode, type the following command and press Enter:

Router(config-if)# exit

Configuring the Ethernet Interface

The Cisco SLT uses the built-in Ethernet interface for connection to the IP network that backhauls SS7 signaling between the Cisco SLT and the SC host.

To configure the Ethernet interface, complete the following steps:

Step 1 To begin global configuration mode, type the following command and press Enter:

Router# configure terminal

Step 2 To begin interface configuration mode for the built-in Ethernet interface, type the following command and press Enter:

Router(config)# interface Ethernet 0/0

Step 3 To assign an IP address and subnet mask to the interface, type the following command and press Enter:

Router(config-if)# ip address 10.10.11.1 255.255.255.0

Step 4 To activate the interface, type the following command and press Enter:

Router(config-if)# no shutdown

Step 5 To exit interface configuration mode, type the following command and press Enter:

Router(config-if)# exit

Verifying the Ethernet Interface Configuration

To verify the Ethernet interface configuration, type the show interface ethernet 0/0 privileged EXEC command at the Router # prompt and press Enter:

Router# show interface ethernet 0/0

The following verification text appears:

Ethernet0/0 is up, line protocol is up
  Hardware is AmdP2, address is 0050.7337.5100 (bia 0050.7337.5100)
  Internet address is 255.251.111.6/24
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 10:00:36
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue -196/75, 0 drops
  5 minute input rate 3000 bits/sec, 5 packets/sec
  5 minute output rate 2000 bits/sec, 4 packets/sec
     45891 packets input, 3234949 bytes, 0 no buffer
     Received 1593 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     61546 packets output, 3728838 bytes, 0 underruns(518/2091/0)
     0 output errors, 2609 collisions, 3 interface resets
     0 babbles, 0 late collision, 875 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

This completes the physical interface configuration. Continue to the next section ("Configuring the Session Manager and Reliable User Datagram Protocol") to configure the Session Manager, RUDP, and the variant.

Configuring the Session Manager and Reliable User Datagram Protocol

The Session Manager and the Reliable User Datagram Protocol (RUDP) are responsible for managing the communication sessions with the SC hosts. Regardless of the number of SS7 links that the SC host activates on the Cisco SLT, the router maintains only one Session Manager session with each SC host.

Note You must reboot the Cisco SLT after setting a new session configuration or after changing an existing session configuration. Do not change session timers unless instructed to do so by Cisco technical support. Changing timers might result in service interruption or outage.

To configure the session for establishing communications with the SC host, complete the following steps:

Note You can define either one or two sessions.

Step 1 To begin global configuration mode, type the following command and press Enter:

Router# configure terminal

Step 2 To set the switchover (failover) timer, type the following command and press Enter:

Router(config)# ss7 set failover-timer 5

Note When an active session fails, the failover-timer value specifies the number of seconds that the Session Manager waits for the active session to recover, or for the standby SC host to indicate that the Cisco SLT should switch traffic to the standby session and make that session the active session. If the timer expires without a recovery of the original session or an active message from the standby SC host, the signaling links are taken out of service. The default setting is 3 seconds, and values from 1 through 10 are valid.

Step 3 To configure the address pairs and ports for the first Session Manager session, type the following command and press Enter:

Router(config)# ss7 session-0 address 10.0.0.1 7000 10.0.0.2 7000

Step 4 Specify the remote four-part IP address and the remote port first, then the local IP address and UDP port, by typing in the following command and pressing Enter:

ss7 session-session number {address remote-address remote-port local-address local-port}

where session number is either 1 or 0.

Note There are two sessions: one for the active SC host and one for the standby SC host. The port numbers that each SC use to communicate with the Cisco SLT must be unique for the active and standby machines and must match the settings for *.stPort in the XECfgParm.dat file. These port numbers are associated in the previous configuration example as local-address and local-port.

Step 5 To configure the address pairs and ports for the second Session Manager session, type the following command and press Enter:

Router(config)# ss7 session-0 address 10.0.0.1 7001 10.0.0.2 7001

Step 6 Specify the remote four-part IP address and the remote port first, then the local IP address and UDP port, by typing the following command and pressing Enter:

ss7 session-session number {address remote-address remote-port local-address local-port}

where session number is either 1 or 0.

Note You can specify any UDP port not used by another protocol defined in RFC 1700 or otherwise used within your network.

Step 7 To exit interface configuration mode, type the following command and press Enter:

Router(config-if)# exit

Step 8 To save the new configuration as the startup configuration, type the following command and press Enter:

Router# copy system:running-config nvram:startup-config

Step 9 To reload the Cisco SLT, type the following command and press Enter:

Router# reload

Note You must reload the Cisco SLT if you delete a session or modify any of the parameters of a session. For a complete list of SS7 parameters and Cisco SLT commands, see the Appendix A of the Cisco Media Gateway Controller Software Release 7 Installation and Configuration Guide.

Verifying the Session Manager and RUDP Configuration

To verify the Session Manager and RUDP configuration, complete the following steps:

Step 1 To view a session configuration, type the privileged EXEC show ss7 sm session command, with or without a session number of 0 or 1, and press Enter:

Router# show ss7 sm session
Session[0]: Remote Host 255.251.250.252:8060, Local Host 255.251.251.252:8060
      retrans_t = 600
      cumack_t  = 300
      kp_t      = 2000
      m_retrans = 2
      m_cumack  = 3
      m_outseq  = 3
      m_rcvnum  = 32
 
Session[1]: Remote Host 255.251.250.253:8060, Local Host 255.251.251.252:8061
      retrans_t = 600
      cumack_t  = 300
      kp_t      = 2000
      m_retrans = 2
      m_cumack  = 3
      m_outseq  = 3
      m_rcvnum  = 32

Step 2 To verify the switchover (failover) timer setting, type the privileged EXEC show ss7 sm set command and press Enter:

Router# show ss7 sm set
Session Manager Set
      failover timer = 3 seconds

Step 3 To view Session Manager statistics, type the privileged EXEC show ss7 sm stats command and press Enter:

Router# show ss7 sm stats

Note You can specify a session number of 1 or 2.

The following text appears:

Router# show ss7 sm stats
 
-------------------- Session Manager  --------------------
 
Session Manager state             = SESSION SET STATE-ACTIVE
Session Manager Up count          = 1
Session Manager Down count        = 0
   lost control packet count      = 0
              lost PDU count      = 0
 failover timer expire count      = 0
 invalid_connection_id_count      = 0
 
Session[0] statistics  SM SESSION STATE-STANDBY:
Session Down count               = 0
   Open Retry count              = 0
 
   Total Pkts receive count      = 1
   Active Pkts receive count     = 0
   Standby Pkts receive count    = 1
   PDU Pkts receive count        = 0
   Unknown Pkts receive count    = 0
 
   Pkts send count               = 0
   Pkts requeue count            = 0
    -Pkts window full count      = 0
    -Pkts resource unavail count = 0
    -Pkts enqueue fail count     = 0
   PDUs dropped (Large)          = 0
   PDUs dropped (Empty)          = 0
 
   RUDP Not Ready Errs           = 0
   RUDP Connection Not Open      = 0
   RUDP Invalid Conn Handle      = 0
   RUDP Unknown Errors           = 0
   RUDP Unknown Signal           = 0
   NonActive Receive count       = 0
 
Session[1] statistics  SM SESSION STATE-ACTIVE:
Session Down count               = 0
   Open Retry count              = 0
 
   Total Pkts receive count      = 2440
   Active Pkts receive count     = 1
   Standby Pkts receive count    = 0
   PDU Pkts receive count        = 2439
   Unknown Pkts receive count    = 0
 
   Pkts send count               = 2905
   Pkts requeue count            = 0
    -Pkts window full count      = 0
    -Pkts resource unavail count = 0
    -Pkts enqueue fail count     = 0
   PDUs dropped (Large)          = 0
   PDUs dropped (Empty)          = 0
 
   RUDP Not Ready Errs           = 0
   RUDP Connection Not Open      = 0
   RUDP Invalid Conn Handle      = 0
   RUDP Unknown Errors           = 0
   RUDP Unknown Signal           = 0
   NonActive Receive count       = 0

Configuring the MTP2 Variant

SS7 MTP2 supports the following four variants:

Telcordia (formerly Bellcore)
ITU
TTC (Japan Telecom)

Parameters in one variant have different meanings, purposes, and ranges in another variant. See Appendix A of the Cisco Media Gateway Controller Software Release 7 Installation and Configuration Guide for more on MTP 2 variant commands and their parameters.

Pay attention to the following:

Parameters that are not configured remain at their default values.
The channel to be configured must be out of service at the SC host before you can change the variant or the variant configuration.
Once variant configuration changes have been made, you must reload the Cisco SLT to apply them.

To configure the MTP2 variant, complete the following steps:

Step 1 To begin global configuration mode, type the following command and press Enter:

Router# configure terminal

Step 2 To set the amount of DRAM to be used for I/O memory to 40 percent, type the following command and press Enter:

Router(config)# mem iomem 40

Note You must set the I/O memory to at least 40 percent in order to have enough memory for the SS7 MTP2 signaling.

Step 3 To configure the MTP2 variant Telcordia (formerly Bellcore) for channel 2, type the following command and press Enter:

Router(config)# ss7 mtp2-variant Bellcore 2

Step 4 To set the aligned timer to 30,000 milliseconds, type the following command and press Enter:

Router(config-Bellcore)# T3 30000

Step 5 To set the maximum number of message signal units (MSUs) waiting for acknowledgment to 16, type the following command and press Enter:

Router(config-Bellcore)# unacked-MSUs 16

Step 6 To set the excessive delay timer to 50,000 milliseconds, type the following command and press Enter:

Router(config-Bellcore)# T7 50000

Step 7 To exit Bellcore variant configuration mode, type the following command and press Enter:

Router(config-Bellcore)# exit

Step 8 To exit configuration mode, type the following command and press Enter:

Router(config-if)# end

Step 9 To save the running configuration to startup configuration, type the following command and press Enter:

Router# copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]

Where to Go Next

Proceed to "Installing the Sun Solaris 2.6 Operating System."

Table of Contents

Installing and Configuring the Cisco SLT