Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 21 Using Cisco Fabric Services
CFS Distribution
Verifying CFS Distribution Status
The show cfs status command displays the status of CFS distribution on the switch.
switch# show cfs status
Distribution : Enabled
Distribution over IP : Disabled
IPv4 multicast address : 239.255.70.83
IPv6 multicast address : ff15::efff:4653
CFS Distribution over IP
CFS distribution over IP supports the following features:
• Physical distribution over an entirely IP network.
• Physical distribution over a hybrid Fibre Channel and IP network with the distribution reaching all
switches that are reachable over either Fibre Channel or IP.
Note The switch attempts to distribute information over Fibre Channel first and then over the IP
network if the first attempt over Fibre Channel fails. CFS does not send duplicate messages if
distribution over both IP and Fibre Channel is enabled.
• Distribution over IP version 4 (IPv4) or IP version 6 (IPv6).
Note CFS cannot distribute over both IPv4 and IPv6 from the same switch.
• Keepalive mechanism to detect network topology changes using a configurable multicast address.
• Compatibility with Cisco MDS 9000 Family switches running release 2.x or later.
Figure 21-1 shows a network with both Fibre Channel and IP connections. Node A forwards an event to
node B over Fibre Channel. Node B forwards the event node C and node D using unicast IP. Node C
forwards the event to node E using Fibre Channel.
Figure 21-1 Network Example 1 with Fibre Channel and IP Connections
Figure 21-2 is the same as Figure 21-1 except that node C and node D are connected using Fibre
Channel. All processes is the same in this example because node B has node C and node D the
distribution list for IP. Node C does not forward to node D because node D is already in the distribution
list from node B.
Node A Node B Node C Node E
Node D
FC
IP
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