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nx.os.and.cisco.nexus.switching.2nd.edition.1587143046

Nexus Switching 2nd Edition

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luejay(config-if)# interface Port-channel3<br />

bluejay(config-if)# shutdown<br />

bluejay(config-if)# ip pim sparse-mode<br />

bluejay(config-if)# description to AGG1 (Egypt)<br />

bluejay(config-if)# ip address 10.198.2.1 255.255.255.252<br />

bluejay(config-if)#<br />

bluejay(config-if)# interface Port-channel4<br />

bluejay(config-if)# shutdown<br />

bluejay(config-if)# ip pim sparse-mode<br />

bluejay(config-if)# description to AGG2 (Italy)<br />

bluejay(config-if)# ip address 10.198.2.5 255.255.255.252<br />

bluejay(config-if)# end<br />

bluejay#<br />

Design Note<br />

Acme, Inc., has elected to use port-channels between these devices, even though<br />

initially it will use only a single 10 G member in each port-channel. This gives them<br />

flexibility to incrementally add b<strong>and</strong>width in the future by simply adding additional<br />

members. To decrease the impact of a single module failure, the aggregation links to<br />

the core are placed on different linecards. On the core side of these links, diversity is<br />

achieved by redundant chassis, each with a single linecard. C<strong>os</strong>t was a major driver<br />

for this decision, but by making these links port-channels, in the future, Acme may<br />

purchase additional modules, at which time additional links from the new modules<br />

can be added to the port-channels <strong>and</strong> increase the redundancy.<br />

Example 14-4 performs the same task on Dove.<br />

Example 14-4. Build Port-Channels on Dove<br />

Click here to view code image<br />

dove# conf t<br />

dove(config)# interface TenGigabitEthernet3/2<br />

dove(config-if)# descr to AG1 (Egypt)<br />

dove(config-if)# no ip address<br />

dove(config-if)# channel-group 3 mode on<br />

dove(config-if)#<br />

dove(config-if)# interface TenGigabitEthernet3/3<br />

dove(config-if)# descr to AG2 (Italy)<br />

dove(config-if)# no ip address<br />

dove(config-if)# channel-group 4 mode on<br />

dove(config-if)#<br />

dove(config-if)# interface Port-channel3

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