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Contents
Example: Setting up two cascaded DR systems with directly attached multicast
source and receivers ····················································································· 2
Network configuration ········································································································································ 2
Applicable product matrix ··································································································································· 3
Analysis ······························································································································································ 3
Procedure summary ··································································································································· 4
Configuring DRNI ······································································································································· 4
Configuring the dual-active gateways ········································································································ 9
Configuring Layer 3 multicast ··················································································································· 10
Traffic forwarding models ································································································································· 12
Underlay traffic characteristics ················································································································· 12
Forwarding models ··································································································································· 12
Testing network convergence upon single points of failure ············································································· 13
Verifying the configuration································································································································ 14
Verifying the status of the DR system ······································································································ 14
Verifying multicast forwarding information ······························································································· 15
Upgrading the devices ····································································································································· 19
Checking the environment ······················································································································· 19
Upgrading the devices ····························································································································· 19
Verifying the traffic interruption time during the upgrade ········································································· 19
Verifying the upgrade result ····················································································································· 19
Replacing hardware ········································································································································· 20
Replacing a service module ····················································································································· 20
Replacing a switching fabric module ········································································································ 20
Replace a device ······································································································································ 21
Example: Setting up two cascaded DR systems with multicast source and
receivers attached via intermediate devices ················································ 22
Network configuration ······································································································································ 22
Applicable product matrix ································································································································· 24
Analysis ···························································································································································· 24
Procedure summary ································································································································· 25
Configuring DRNI ····································································································································· 25
Configuring the dual-active gateways ······································································································ 29
Configuring OSPF for establishing Layer 3 connectivity between DR member devices ·························· 31
Configuring Layer 3 multicast ··················································································································· 34
Traffic forwarding models ································································································································· 36
Underlay traffic characteristics ················································································································· 36
Forwarding models ··································································································································· 36
Testing network convergence upon single points of failure ············································································· 37
Verifying the configuration································································································································ 37
Verifying the status of the DR system ······································································································ 37
Verifying routing configuration ·················································································································· 39
Upgrading the devices ····································································································································· 44
Checking the environment ······················································································································· 44
Upgrading the devices ····························································································································· 44
Verifying the traffic interruption time during the upgrade ········································································· 44
Verifying the upgrade result ····················································································································· 44
Replacing hardware ········································································································································· 45
Replacing a service module ····················································································································· 45
Replacing a switching fabric module ········································································································ 45
Replace a device ······································································································································ 46