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Shared Mode vs Dedicated mode operation in Nexus 7000 switches

August 30th, 2013 Comments off

In shared mode operation say four interfaces of 10 Giga are grouped together and they offer in total of 10 GB of bandwidth, which creates an over subscription of 4:1

sharedmode

Example:
Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module (N7K-M132XP-12), this 32 port 10 GE module have an 80 GB fabric connection so they are over 4:1 subscribed.
sharedmode1

Unlike in shared mode where four interfaces share the 10 Giga Bandwidth, the dedicated mode offers 10 GB bandwidth to the first interface of the group while all the three remaining will be disabled.
dedicatedmode

In the Cisco Nexus 7000 Series 32-port, 10-Gigabit Ethernet module (N7K-M132XP-12) each group can be configured individually as either dedicated or shared mode. Always a dedicated port is easy to identify in any Nexus line card as they are marked yellow.

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Categories: Networking
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