Cisco Ex SERIES Uživatelský manuál stáhnout pdf (Strana 44)

Juniper Networks/Cisco Systems Switch Interoperability Cookbook

! ! !

The “no shutdown” command is optional with the Catalyst 3850, but mandatory for

the Nexus 7010 and other devices running the NX-OS operating system.

Also, note that in this example IP addresses are configured directly on physical

interfaces. If desired, IP addresses and routing information can instead be assigned to

VLAN interfaces. In that case, each physical interface should be put into switchport

mode and assigned to a VLAN. The “VLAN Trunking” section of this document has

more details.

3. Configure OSPF. This step is not strictly necessary for IP multicast forwarding, but it

is required for PIM-SM routing to build an RPF table:

Cat3850(config)# router ospf 1

Cat3850(config-rtr)# log-adjacency-changes

Cat3850(config-rtr)# network 192.18.1.0 0.0.0.255 area 0

Cat3850(config-rtr)# network 192.18.4.0 0.0.0.255 area 0

Cat3850(config-rtr)# network 192.18.5.0 0.0.0.255 area 0

Cat3850(config-rtr)# network 192.18.6.0 0.0.0.255 area 0

Cat3850(config-if)# exit

4. Configure a PIM rendezvous point (RP), which in this case was statically defined on

the Juniper device:

Cat3850(config)# ip pim rp-address 192.18.32.1

Cat3850(config-if)# end

Validation!

Once subscribers attached to the Cisco Catalyst 3850 have joined multicast groups by

sending IGMPv3 reports with join messages, any multicast traffic for those groups

offered to interface xe-1/0/40 on the Juniper Virtual Chassis will be forwarded to all

subscriber ports on the Cisco Catalyst 3850.

The Junos command show pim neighbors brief also will verify that the

Juniper and Cisco devices see one another and can exchange topology updates. On

Cisco devices, the equivalent command is “show ip pim neighbors”.

Multicast&switching&

Objective!

To verify the ability of Juniper and Cisco switches to correctly forward traffic from a

network using IGMP snooping for multicast switching.

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Cisco Ex SERIES Uživatelský manuál Strana 44