Alcatel Carrier Internetworking Solutions 6800 User Manual

Protocol Overview

Troubleshooting PIM-SM

page 16-4

OmniSwitch Troubleshooting Guide

PIM: ----- PIM Header -----

      PIM: 

      PIM: Version        = 2

      PIM: Message Type   = 0 (Hello)

      PIM: Reserved       = 0

      PIM: Checksum       = 4017 (correct)

      PIM: Option Type    = 1 (PIM-SM)

      PIM: Option Length  = 2

      PIM: Option Value   = 0x0069 (Hold time in seconds)

To debug DR election and view Hello messages sent and received on PIM router interface, use the follow-
ing commands:

-> ip pimsm debug-type hello

-> ip pimsm debug-level 100

Debug output:

tPimsm-:        Sending hello on 2 with IP 192.168.12.1

tPimsm-:        Sending hello on 100 with IP 10.1.1.1

tPimsm-:        Sending hello on 1 with IP 192.168.11.1

Sending hello on 2 is a Hello message sent on VLAN 2, and the interface with IP 192.168.12.1 is the 
router interface sending the Hello message

tPimsm-:        Received hello from 192.168.11.2 on 1, len=22

tPimsm-:        Recvd. hello from 192.168.11.2 on vlan 1 Holdtime 105

tPimsm-:        Recvd. hello from 192.168.11.2 on vlan 1 Priority 1

tPimsm-:        Recvd. hello from 192.168.11.2 on vlan 1 Genid 56455

Received hello from 192.168.11.2 is the sender of the Hello message on 1. len=22 is respectively the 
VLAN on which the packet is received, and the packet length Holdtime 105 is the holdtime in seconds. 
Priority 1 all PIM-SM routers have the same value and are not configurable.

Genid 56455.