X hits on this document

PDF document

Cisco AVVID Network Infrastructure IP Multicast Design - page 46 / 98

264 views

0 shares

0 downloads

0 comments

46 / 98

Chapter 3

IP Multicast in a Wireless LAN

IP Multicast WLAN Configuration

The low-rate stream is allowed and the high-rate stream is disallowed on the P2P wireless link. To control what multicast traffic passes over the P2P link, only the ip multicast boundary configuration on ROUTER is needed. Because the multicast boundary prevents hosts from joining unwanted groups, the network never knows to forward unwanted traffic over the P2P link.

Figure 3-2

Testbed for Point-to-Point Wireless Network using Bridges

10.5.10.22

PC with 350 PC Card

IP/TV server

Source For:

        • 239.255.0.1

          high-rate stream

        • 239.192.248.1

          Low-rate stream

10.1.101.x

.2

Campus

L2-Switch-PWR

VLAN 100 10.1.100.x

.1

.1 L3-Switch

.100 350-Bridge-L

.101 350-Bridge-R

.2

Router

87047

In this configuration:

L3-SWITCH (VLAN 100-10.1.100.1) connects to the campus network and the P2P wireless network.

The P2P wireless link is made possible by two Cisco Aironet 350 Bridges, 350-Bridge-L (10.1.100.100) and 350-Bridge-R (10.1.100.101).

ROUTER (10.1.100.2) connects to the P2P wireless network and the remote site network (10.1.101.1) via L2-SWITCH-PWR.

The laptop computer (10.1.101.2) is running the IP/TV Viewer software.

If the remote side of the P2P link has a Layer 2 switch and no Layer 3 switch or router, then a boundary can be placed on the VLAN 100 interface of L3-SWITCH2. Also, in a Point-to-Multipoint (P2MP) deployment, a mix of both may be needed. Both configurations are shown here for reference.

Following is the configuration for L3-SWITCH.

interface Vlan100 description VLAN for P2P Bridge ip address 10.1.100.1 255.255.255.0 ip pim sparse-mode ip multicast boundary IPMC-BRIDGE ! ip access-list standard IPMC-BRIDGE permit 239.192.248.1

Enables PIM on the interface. Boundary refers to named ACL “IPMC-BRIDGE.”

Permits low-rate stream (239.192.248.1).

To prevent unwanted IGMP messaging and multicast traffic from traversing the P2P wireless link on the receiver side (remote LAN - 10.1.101.x), an ip multicast boundary is configured on the Fast Ethernet 0/1 interface of ROUTER.

Cisco AVVID Network Infrastructure IP Multicast Design

3-4

956651

Document info
Document views264
Page views264
Page last viewedSat Dec 10 17:24:18 UTC 2016
Pages98
Paragraphs2650
Words25637

Comments