X hits on this document

PDF document

Cisco AVVID Network Infrastructure IP Multicast Design - page 36 / 98

205 views

0 shares

0 downloads

0 comments

36 / 98

Chapter 2

IP Multicast in a Campus Network

IP Multicast Medium Campus Design

ip msdp cache-sa-state ! ! ip msdp originator-id Loopback0

Creates SA state (S,G). The SA cache entry is created when either MSDP peer has an active source.

Sets RP address in SA messages to be Loopback 0.

Distribution-Layer Switch Configuration

The distribution switches for both building 1 and 2 run PIM-SM on each Layer 3 interface and point to the Anycast RP of 10.6.2.1 (Loopback 1 on both RPs).

The following example shows the multicast configuration for each distribution switch.

ip multicast-routing ! interface VLAN/GigabitEthernet

Enables IP multicast routing globally.

ip pim sparse-mode ip cgmp ! interface Vlanxx

Enables PIM-SM on the interface. Enables CGMP.

description VLANs for other L3 links to Core

ip address 10.0.0.x 255.255. ip pim sparse-mode ! ip pim rp-address 10.6.2.1 ! ip pim spt-threshold infinity ! !

255.252

Points to the Loopback 1 address of both core switches.

Reduces multicast state (S,G) from the leaf routers by keeping traffic on the shared tree. (Optional)

!To simplify this example, the HSRP configuration has been omitted.

Note

If the Layer 3 interface connects to a CGMP-enabled switch (3524-PWR), CGMP Server operation must be enabled. If the interface connects to an IGMP snooping enabled router, IP CGMP does not need to be enabled, but PIM must be enabled.

The following example shows how to verify that each distribution switch has established a PIM neighbor relationship.

PIM Neighbor Table

Neighbor Address

Interface

10.1.2.3

Vlan2

10.1.12.3

Vlan12

10.1.3.3

Vlan3

10.1.13.3

Vlan13

10.0.0.2

GigabitEthernet0/1

10.0.0.6

GigabitEthernet0/2

4kS3-bldg1-dist-left#show ip

pim

neighbor

Uptime 2d14h 2d14h 1w1d 1w1d 00:50:59 00:50:59

Expires

Ver

Mode

00:01:27

v2

(DR)

00:01:37

v2

(DR)

00:01:16

v2

(DR)

00:00:16

v2

(DR)

00:00:14

v2

(DR)

00:00:14

v2

(DR)

Note

For information about configuring the Data Center portion of the network for IP multicast, see Chapter 4, “IP Multicast in a Data Center.”

Cisco AVVID Network Infrastructure IP Multicast Design

2-16

956651

Document info
Document views205
Page views205
Page last viewedSun Dec 04 06:37:24 UTC 2016
Pages98
Paragraphs2650
Words25637

Comments