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Figure 12 Connecting IRF member devices by using crosslink ports
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You can connect the devices into a daisy-chain topology or a ring topology. A ring topology is more
reliable (see
split as in daisy-chain topology. Rather, the IRF fabric changes to a daisy-chain topology without
interrupting network services.
Figure 13 Daisy-chain topology vs. ring topology
Master
IRF-port 1
Subordinate
IRF-port 1
Subordinate
Daisy-chain topology
Binding physical interfaces to IRF ports
When you bind physical interfaces to IRF ports, follow these guidelines:
•
Follow the restrictions in
•
You must always shut down a physical interface before binding it to an IRF port or removing the
binding. Start the shutdown operation on the master, and then the member device that has the
fewest number of hops from the master.
On a physical interface bound to an IRF port, you can execute only the following commands:
Command category
Basic Ethernet interface
commands
LLDP commands
Inter-switch
Crosslink
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IRF-port2
IRF-port1
Figure
13). In ring topology, the failure of one IRF link does not cause the IRF fabric to
IRF
fabric
IRF-port 2
IRF-port 2
"IRF physical interface
Commands
•
•
•
•
•
•
•
•
•
2
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Master
IRF-port 1
IRF fabric
IRF-port 2
IRF-port 1
Subordinate
Ring topology
requirements."
description
flow-interval
shutdown
lldp admin-status
lldp check-change-interval
lldp enable
lldp encapsulation snap
lldp notification
remote-change enable
lldp tlv-enable
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IRF-port 2
IRF-port 1
IRF-port 2
Subordinate
Remarks
See Layer 2—LAN Switching
Configuration Guide.
See Layer 2—LAN Switching
Configuration Guide.
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