Руководство По Проектированию для Cisco Cisco Nexus 5010 Switch
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vPC Domain Checklist
vPC configuration best practices include the following steps:
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Define domains.
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Make sure the domain ID differs between vPC domains.
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Establish peer keepalive connectivity.
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Be sure to use an out-of-band keepalive path such as mgmt0 over a management network.
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Create a peer link.
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Use two or more 10 Gigabit Ethernet ports.
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Do not forget that putting a VLAN on a vPC requires that the VLAN be on the peer link, too.
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Create vPCs.
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Monitor the status of consistency checks.
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Enable autorecovery.
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Make sure that the Graceful Consistency Check feature is enabled.
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Configure vpc delay restore.
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Configure vpc orphan-ports suspend on orphan ports that connect to NIC teaming in active-standby
mode.
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Consider the use of enhanced vPC for setting up PortChannels for servers to fabric extenders in an active-
active configuration.
LACP Checklist
LACP best practices include the following steps:
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Create a single PortChannel using LACP between the aggregation and access layers.
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Use lacp suspend-individual for switch links.
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Disable lacp suspend-individual for ports that require Preboot Execution Environment (PXE) booting and
for server ports in general.
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Evaluate the use of LACP fast rate (for HP servers, for instance) and consider the effect on ISSU.
Spanning-Tree Checklist
Spanning-tree best practices include the following steps:
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If you use the peer switch function, then define identical priorities on the aggregation layer switches, to
make those switches the root.
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Do not use Bridge Assurance (that is, do not use spanning-tree port type network; use spanning-tree
port type normal instead).
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Keep the default spanning-tree priorities on the access layer switches.
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Use UDLD normal mode.
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Enable errdisable recovery.
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If you are using MST, make sure that VLAN range configurations are consistent.
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When using MST, be aware of the Cisco NX-OS VLAN range and of the global Type 1 inconsistencies;
hence, configure VLAN-to-region mappings from day 1.