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Configuring STUN Multipoint with Two Routers on the Remote

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Document ID: 4731


Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Configure
      Network Diagram
      Configurations
Verify
Troubleshoot
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Related Information

Introduction

This document provides a sample configuration for Serial Tunnel (STUN) Virtual Multipoint. This document also provides the relevant states in the show stun command output and the state changes in the debug stun event/packet command output.

The first line of the output provides the INOP state at the front- end processor (FEP) side, and displays the STUN state in each router. STUN peers are in a closed state. You cannot see any transmitted (tx_pkts) and received packets (rx_pkts), which is normal. After you activate the line and Physical Units (PUs) on the FEP side for the controllers, you begin to see that rx and tx packet counters increment. This shows that the STUN connection for both controllers is active.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on this software version:

  • Cisco IOS® Software Release 12.0(8)

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

For more information on document conventions, refer to the Cisco Technical Tips Conventions.

Configure

This section presents you with the information you can use to configure the features this document describes.

Note: In order to find additional information on the commands this document uses, use the Command Lookup Tool ( registered customers only) .

Network Diagram

This document uses this network setup:

17-a.gif

Configurations

This document uses this configuration:

  • STUN Virtual Multipoint

STUN Virtual Multipoint

 
cloclo#show running-config
Building configuration...

Current configuration:
!
version 12.0
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname cloclo
!
boot system flash rsp-aejsv-mz.120-8
logging buffered 64000 debugging
no logging console
enable password cisco
!
ip subnet-zero
no ip domain-lookup
ip cef
clock summer-time MEST recurring last Sun Mar 2:00 last Sun Oct 3:00
!
!
stun peer-name 10.10.10.10
stun protocol-group 7 sdlc
stun remote-peer-keepalive
!
!
!
!
interface Loopback0
 ip address 10.10.10.10 255.255.255.0
 no ip directed-broadcast
!
interface Serial0/0
 no ip address
 no ip directed-broadcast
 encapsulation stun
 no ip mroute-cache
 clockrate 9600
 stun group 7
 stun sdlc-role secondary
 stun route address 2 tcp 10.20.20.20
 stun route address 1 tcp 10.30.30.30
!
interface Serial0/1
 ip address 10.2.1.1 255.255.255.0
 no ip directed-broadcast
 encapsulation stun
 no ip mroute-cache
 shutdown
!
!
interface Ethernet1/0
 ip address 10.1.1.1 255.255.255.0
 no ip directed-broadcast
 no ip mroute-cache
!
!
router eigrp 100
 network 10.0.0.0
!
ip classless
!
!
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
line vty 0 4
 password cisco
 login
!
end

cloclo#
=======================================================

fairbanks#show running-config
Building configuration...

Current configuration:
!
version 12.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname fairbanks
!
logging buffered 64000 debugging
no logging console
enable password cisco
!
ip subnet-zero
no ip domain-lookup
clock summer-time MEST recurring last Sun Mar 2:00 last Sun Oct 3:00
!
!
stun peer-name 10.20.20.20
stun protocol-group 7 sdlc
stun remote-peer-keepalive
!
!
!
!
interface Loopback0
 ip address 10.20.20.20 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 ip address 10.1.1.2 255.255.255.0
 no ip directed-broadcast
 media-type 10BaseT
!
interface Serial1
 no ip address
 no ip directed-broadcast
 encapsulation stun
 stun group 7
 stun sdlc-role primary
 sdlc address 02
 stun route address 2 tcp 10.10.10.10
!
router eigrp 100
 network 10.0.0.0
!
ip classless
!
!
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
 exec-timeout 0 0
line vty 0 4
 exec-timeout 0 0
 password ww
 login
!
ntp clock-period 17179288
ntp server 172.17.240.250
end

fairbanks#
=======================================================

alix#show running-config
Building configuration...

Current configuration:
!
version 12.0
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname alix
!
!
ip subnet-zero
no ip domain-lookup
!
!
stun peer-name 10.30.30.30
stun protocol-group 7 sdlc
stun remote-peer-keepalive
!
!
interface Loopback0
 ip address 10.30.30.30 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 ip address 10.1.1.3 255.255.255.0
 no ip directed-broadcast
!
interface Serial0
 no ip address
 no ip directed-broadcast
 encapsulation stun
 no ip mroute-cache
 clockrate 64000
 stun group 7
 stun sdlc-role primary
 sdlc address 01
 stun route address 1 tcp 10.10.10.10
!
interface Serial1
 no ip address
 no ip directed-broadcast
 no ip mroute-cache
 no keepalive
 shutdown
!
interface TokenRing0
 no ip address
 no ip directed-broadcast
 no keepalive
 shutdown
 ring-speed 16
 multiring all 
!
router eigrp 100
 network 10.0.0.0
!
ip classless
!
!
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
 modem InOut
 transport input all
 flowcontrol hardware
line vty 0 4
 exec-timeout 0 0
 password ww
 login
!
end

alix#

Verify

This section provides information you can use to confirm that your configuration works properly.

Certain show commands are supported by the Output Interpreter Tool ( registered customers only) , which allows you to view an analysis of show command output.

Note: Before you issue debug commands, refer to Important Information on Debug Commands.

  • show stun

  • debug stun events

  • debug stun packet

These outputs are from the Cloclo and Fairbanks routers. The outputs from the router Alix, which are not shown here, are similar to those taken from the router Fairbanks.

Before the Connection is Established 

cloclo# show stun
This peer: 10.10.10.10

 *Serial0/0  (group 7 [sdlc])
                              state       rx_pkts   tx_pkts     drops    poll
2     TCP 10.20.20.20      closed              0         0         0 
1     TCP 10.30.30.30      closed              0         0         0 
  
cloclo#



fairbanks#show stun
This peer: 10.20.20.20

 *Serial1  (group 7 [sdlc])
                              state       rx_pkts   tx_pkts     drops    poll
2     TCP 10.10.10.10      closed              0         0         0 

fairbanks#

After the Connection is Established 

cloclo#show stun
 This peer: 10.10.10.10

 *Serial0/0  (group 7 [sdlc])
                           state       rx_pkts   tx_pkts     drops    poll
2     TCP 10.20.20.20      open           43        48         0 
1     TCP 10.30.30.30      open           65        70         0 
 

cloclo#

fairbanks#show stun
This peer: 10.20.20.20

 *Serial1  (group 7 [sdlc])
                           state       rx_pkts   tx_pkts     drops    poll
2     TCP 10.10.10.10      open           63        59         0 

fairbanks#

This output is from the Cloclo and Fairbanks routers. The outputs from the router Alix, which are not shown here, are similar to those taken from the router Fairbanks.

debug Captures During the STUN Activation 

cloclo#show log
Syslog logging: enabled (0 messages dropped, 0 flushes, 0 overruns)
    Console logging: disabled
    Monitor logging: level debugging, 0 messages logged
    Buffer logging: level debugging, 226 messages logged
    Trap logging: level informational, 38 message lines logged

Log Buffer (64000 bytes):

*Dec  6 20:39:26.019: %LINK-3-UPDOWN: Interface Serial0/0, 
      changed state to up
*Dec  6 20:39:27.019: %LINEPROTO-5-UPDOWN: Line protocol on 
      Interface Serial0/0, changed state to up
*Dec  6 20:39:28.619: STUN sdlc: 00:01:12 Serial0/0       
      SDI: (001/008) U: SNRM    PF:1  
*Dec  6 20:39:28.619: STUN: Change state for peer 
      (1[7])10.30.30.30/1994 (closed->opening)
*Dec  6 20:39:28.619: STUN: Change state for peer 
      (1[7])10.30.30.30/1994 (opening->open wait)
*Dec  6 20:39:28.619: %STUN-6-OPENING: CONN: opening peer 
      (1[7])10.30.30.30/1994, 3
*Dec  6 20:39:28.627: %STUN-6-OPENED: CONN: peer 
      (1[7])10.30.30.30/1994 opened, [previous state open wait]
*Dec  6 20:39:28.627: STUN: Change state for peer 
      (1[7])10.30.30.30/1994 (open wait->open)
*Dec  6 20:39:29.719: STUN sdlc: 00:00:01 Serial0/0 
      SDI: (001/008) U: SNRM    PF:1  
*Dec  6 20:39:29.727: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) U: UA      PF:1  
*Dec  6 20:39:29.747: STUN sdlc: 00:00:00 Serial0/0
      SDI: (001/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:29.755: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:29.919: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:29.927: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:29.959: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) I:         PF:0  NR:000  NS:000
*Dec  6 20:39:30.119: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:30.131: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) I:         PF:1  NR:001  NS:000
*Dec  6 20:39:30.319: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:001  
*Dec  6 20:39:30.327: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:001  
*Dec  6 20:39:30.355: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) I:         PF:0  NR:001  NS:001
*Dec  6 20:39:30.519: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:001  
*Dec  6 20:39:30.531: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) I:         PF:1  NR:002  NS:001
*Dec  6 20:39:30.719: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:30.727: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:30.919: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:30.927: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.119: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.127: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.319: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.327: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.519: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.527: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.719: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.727: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.919: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:31.927: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.119: STUN sdlc: 00:00:00 Serial0/0   
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.127: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.319: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.327: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.519: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.527: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.719: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.727: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.919: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:32.927: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.119: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.127: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.319: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.327: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.519: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.527: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:33.543: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (002/008) U: SNRM    PF:1  
*Dec  6 20:39:33.543: STUN: Change state for peer 
     (2[7])10.20.20.20/1994 (closed->opening)
*Dec  6 20:39:33.543: STUN: Change state for peer 
      (2[7])10.20.20.20/1994 (opening->open wait)
*Dec  6 20:39:33.543: %STUN-6-OPENING: CONN: opening peer 
      (2[7])10.20.20.20/1994, 3
*Dec  6 20:39:33.547: %STUN-6-OPENED: CONN: peer 
     (2[7])10.20.20.20/1994 opened, [previous state open wait]
*Dec  6 20:39:33.547: STUN: Change state for peer 
     (2[7])10.20.20.20/1994 (open wait->open)
*Dec  6 20:39:34.611: STUN sdlc: 00:00:01 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.615: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.719: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.727: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.743: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (002/008) U: SNRM    PF:1  
*Dec  6 20:39:34.747: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (002/008) U: UA      PF:1  
*Dec  6 20:39:34.767: STUN sdlc: 00:00:00 Serial0/0 
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.775: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.791: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (002/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:34.799: STUN sdlc: 00:00:00 Serial0/0 
      NDI: (002/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:34.919: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.927: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:34.959: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (002/008) I:         PF:0  NR:000  NS:000
*Dec  6 20:39:34.963: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (002/008) S: RR      PF:1  NR:000  
*Dec  6 20:39:34.975: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (002/008) I:         PF:1  NR:001  NS:000
*Dec  6 20:39:35.119: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.127: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.155: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (002/008) I:         PF:0  NR:001  NS:001
*Dec  6 20:39:35.159: STUN sdlc: 00:00:00 Serial0/0   
      SDI: (002/008) S: RR      PF:1  NR:001  
*Dec  6 20:39:35.167: STUN sdlc: 00:00:00 Serial0/0   
      NDI: (002/008) I:         PF:1  NR:002  NS:001
*Dec  6 20:39:35.319: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.327: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.343: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (002/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.351: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (002/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.519: STUN sdlc: 00:00:00 Serial0/0  
      SDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.527: STUN sdlc: 00:00:00 Serial0/0  
      NDI: (001/008) S: RR      PF:1  NR:002  
*Dec  6 20:39:35.543: STUN sdlc: 00:00:00 Serial0/0  
     SDI: (002/008) S: RR      PF:1  NR:002   
cloclo#
cloclo#


fairbanks#show log
Syslog logging: enabled (0 messages dropped, 0 flushes, 0 overruns)
    Console logging: disabled
    Monitor logging: level debugging, 0 messages logged
    Buffer logging: level debugging, 74 messages logged
    Trap logging: level informational, 32 message lines logged

Log Buffer (64000 bytes):

*Dec  6 18:42:41.139: %STUN-6-PASSIVEOPEN: passive 
open 10.10.10.10(11001) -> 1994
*Dec  6 18:42:41.139: %STUN-6-OPENED: PHDR: peer 
(2[7])10.10.10.10/1994 opened, [previous state closed]
*Dec  6 18:42:41.143: STUN: Change state for peer 
(2[7])10.10.10.10/1994 (closed->open)
*Dec  6 18:42:41.143: STUN sdlc: 00:02:08 Serial1 
      NDI: (002/008) U: SNRM    PF:1  
*Dec  6 18:42:42.335: STUN sdlc: 00:00:01 Serial1
      NDI: (002/008) U: SNRM    PF:1  
*Dec  6 18:42:42.339: STUN sdlc: 00:00:00 Serial1     
      SDI: (002/008) U: UA      PF:1  
*Dec  6 18:42:42.383: STUN sdlc: 00:00:00 Serial1    
      NDI: (002/008) S: RR      PF:1  NR:000  
*Dec  6 18:42:42.387: STUN sdlc: 00:00:00 Serial1     
      SDI: (002/008) S: RR      PF:1  NR:000  
*Dec  6 18:42:42.551: STUN sdlc: 00:00:00 Serial1    
      NDI: (002/008) I:         PF:0  NR:000  NS:000
*Dec  6 18:42:42.559: STUN sdlc: 00:00:00 Serial1     
      NDI: (002/008) S: RR      PF:1  NR:000  
*Dec  6 18:42:42.563: STUN sdlc: 00:00:00 Serial1  
      SDI: (002/008) I:         PF:1  NR:001  NS:000
*Dec  6 18:42:42.747: STUN sdlc: 00:00:00 Serial1      
      NDI: (002/008) I:         PF:0  NR:001  NS:001
*Dec  6 18:42:42.751: STUN sdlc: 00:00:00 Serial1      
      NDI: (002/008) S: RR      PF:1  NR:001  
*Dec  6 18:42:42.759: STUN sdlc: 00:00:00 Serial1      
      SDI: (002/008) I:         PF:1  NR:002  NS:001
*Dec  6 18:42:42.935: STUN sdlc: 00:00:00 Serial1      
      NDI: (002/008) S: RR      PF:1  NR:002  
*Dec  6 18:42:42.939: STUN sdlc: 00:00:00 Serial1     
      SDI: (002/008) S: RR      PF:1  NR:002  
*Dec  6 18:42:43.135: STUN sdlc: 00:00:00 Serial1     
    NDI: (002/008) S: RR      PF:1  NR:002    
fairbanks#

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

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Related Information

Updated: Sep 09, 2005Document ID: 4731