Cisco Ex SERIES Manual de usuario descargar pdf (Pagina 47)

Juniper Networks/Cisco Systems Switch Interoperability Cookbook

! ! !

3. Set the IP address of the IGMP querier. Usually this is a multicast-enabled router near

the switches:

Cat3850(config)# ip igmp snooping querier address 192.18.36.1

Cat6500(config)# end

Validation!

On the Juniper Virtual Chassis Fabric, results of the command show igmp-

snooping membership will verify that the switch has correctly mapped multicast

groups to the appropriate subscriber interfaces.

root@VCF> show igmp snooping membership | no-more

Instance: default-switch

Vlan: v2001

Learning-Domain: default

Interface: xe-1/0/10.0, Groups: 10

Group: 225.0.1.0

Group mode: Exclude

Source: 0.0.0.0

Last reported by: 10.205.0.2

Group timeout: 223 Type: Dynamic

Group: 225.0.1.1

Group mode: Exclude

Source: 0.0.0.0

Last reported by: 10.205.0.2

Group timeout: 223 Type: Dynamic

Interface: xe-1/0/40.0, Groups: 0

The output for interface xe-1/0/10 will continue through multicast group address

225.0.1.9. Note that interface xe-1/0/40 shows no associated multicast groups. This is

because all subscribers are connected to the Cisco switch. There are no multicast group

subscribers directly attached to the Juniper switch. Thus, incoming packets with a

destination address of an IP multicast group should only be forwarded through interface

xe-1/0/10.

The command show interface <name> extensive will verify correct

forwarding of multicast traffic. The “Multicast packets” counter (under “MAC

statistics”) will increment on interfaces with multicast subscribers attached, and will not

increment on other interfaces.

On Cisco devices, the command “show ip igmp snooping groups” will

display information about multicast group membership.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 82 83

Sin comentarios

Cisco Ex SERIES Manual de usuario Pagina 47