Filter
Top Products
Cisco Hoot and Holler over IP
Configuration Examples
18
Cisco IOS Release 12.1(5)T
Note In all of the following configuration examples, the routers are configured with an
interface vif1 command. This is a virtual interface that is similar to a loopback
interface—it is a logical IP interface that is always up when the router is active. In
addition, it must be configured so that the Cisco Hoot and Holler over IP packets that are
locally mixed on the DSPs can be fast-switched along with the other data packets. This
interface needs to reside on its own unique subnet, and that subnet should be included in
the routing protocol updates (RIP, OSPF, and so on).
Voice Multicasting over an Ethernet LAN
Figure 4 shows the simplest configuration for voice multicasting over an Ethernet LAN. Two routers
are connected to each other over the Ethernet LAN. One E&M phone is connected to each router.
Figure 4 Voice Multicasting over a LAN
In router Abbott (Figure 4), the phone is connected to voice port 2/0/0, using the
router-slot/voice-slot/VIC-port numbering convention. This router is configured as in the following
example:
hostname Abbott
!
ip multicast-routing
!
voice class permanent 1
signal timing oos timeout disabled
signal keepalive 65535
!
interface Vif1
ip address 1.1.1.1 255.0.0.0
ip pim sparse-dense-mode
!
interface Ethernet0/0
ip address 3.3.3.1 255.0.0.0
ip pim sparse-dense-mode
!
ip route 2.0.0.0 255.0.0.0 3.3.3.2
!
voice-port 2/0/0
voice-class permanent 1
connection trunk 111
operation 4-wire
!
dial-peer voice 1 voip
destination-pattern 111
session protocol multicast
session target ipv4:237.111.0.111:22222
!
E&M VIC
2/0/0
Router 1
IP cloud
E&M VIC
3/1/1
Router 2
36
013