The
network in Figure 6-33 is configured with PIM-DM and will be used to demonstrate
the PIM show and debug commands. The configurations for the routers in Figure
6-33 are listed on the following page.
Figure 6-33: The network used to demonstrate PIM-DM show and
debug commands
Router A
ip multicast-routing
interface Ethernet 0
ip address 172.16.1.1 255.255.255.0
ip pim dense-mode
interface Serial 0
ip address 172.16.2.1 255.255.255.0
clock rate 1540000
ip pim dense-mode
interface Serial 1
ip address 172.16.3.1 255.255.255.0
clock rate 1540000
ip pim dense-mode
router eigrp 100
network 172.16.0.0
Router B
ip multicast-routing
interface Ethernet 0
ip address 172.16.4.1 255.255.255.0
ip pim dense-mode
interface Serial 1
ip address 172.16.3.2 255.255.255.0
clock rate 1540000
ip pim dense-mode
router eigrp 100
network 172.16.0.0
Router C
ip multicast-routing
interface Serial 0
ip address 172.16.2.2 255.255.255.0
ip pim dense-mode
interface Serial 1
ip address 172.16.5.1 255.255.255.0
clock rate 1540000
ip pim dense-mode
router eigrp 100
network 172.16.0.0
Router D
ip multicast-routing
interface Ethernet 0
ip address 172.16.4.2 255.255.255.0
ip pim dense-mode
interface Serial 1
ip address 176.16.5.2 255.255.255.0
clock rate 1540000
ip pim dense-mode
router eigrp 100
network 172.16.0.0
Use
the EXEC command show ip pim neighbor to
view the state of the PIM interfaces on the routers.
Bashow ip pim neighbor
PIM Neighbor Table
Neighbor Address
Interface
Uptime
Expires
Ver
Mode
172.16.3.1
Serial 1
00:09:40
00:01:35
v2
Dense
172.16.4.2
Ethernet0
00:41:57
00:01:19
v2
Dense (DR)
The
fields in the neighbor address are described below.
Neighbor address
IP
Address of the PIM neighbor.
Interface
Interface on which the neighbor is attached.
Uptime
How
long in hours, minutes, and seconds the neighbor has been in the PIM neighbor
table.
Expires
Time
to elapse before the neighbor is removed from the table in hours, minutes, and
seconds.
Mode
PIM
mode of the interface.
(DR)
The
neighbor is the designated router on a multi-access network.
The
state of a PIM interface can be displayed using the show ip pim
interface command.
show ip pim interface [interface-type interface-number] [count]
interface-type interface-number
Optional. Type and number of the interface (Ethernet 0, Serial 1,
etc.)
Optional. Number of packets that have been sent and received on the
interface
B4ashow ip pim interface
Address
Interface
Version/Mode
Nbr Count
Query Intvl
DR
172.16.4.2
Ethernet0
v2/Dense
1
30
172.16.4.1
172.16.3.1
Serial1
v2/Dense
1
30
0.0.0.0
Address
IP
address of the next hop router.
Interface
PIM
interface type and number.
Version/Mode
Configured PIM mode and version number for the interface.
Neighbor Count
Number of discovered PIM neighbors on this interface.
Query Intvl
Configured PIM query interval.
DR
Address of the designated router. Serial interfaces do not have a
designated router so this field is set to 0.0.0.0.
Sections
Syndication
