Cisco Cisco Nexus 2224TP GE Fabric Extender White Paper
© 2014 Cisco | IBM. All rights reserved.
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vPC role : primary
Number of vPCs configured : 0
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po20 up 1,182
N5548-Bottom(config-if)#
Now the two switches have been configured to support vPC links to other devices. These connections can be
used for upstream links to the data center core. These vPC links can be used for connections to hosts in the data
center, allowing additional bandwidth and redundant links.
used for upstream links to the data center core. These vPC links can be used for connections to hosts in the data
center, allowing additional bandwidth and redundant links.
Server Network Teaming
Server NIC teaming provides an additional layer of redundancy to servers. It makes it possible for multiple links to
be available, for redundancy. In the blade server environment, server network teaming typically is limited to
active-standby configurations and cannot provide active-active links, because active-active links require an
EtherChannel or Link Aggregation Control Protocol (LACP) connection to a single switch. However, because the
Cisco Nexus B22 for IBM fabric extender is an extension of the parent switch, EtherChannel or LACP connections
can be created between the blade server and the virtual chassis. Dual Cisco Nexus switches can be used with
vPC for additional switch redundancy while providing active-active links to servers, thus enabling aggregate 40-
Gbps bandwidth with dual links (Figure 6).
be available, for redundancy. In the blade server environment, server network teaming typically is limited to
active-standby configurations and cannot provide active-active links, because active-active links require an
EtherChannel or Link Aggregation Control Protocol (LACP) connection to a single switch. However, because the
Cisco Nexus B22 for IBM fabric extender is an extension of the parent switch, EtherChannel or LACP connections
can be created between the blade server and the virtual chassis. Dual Cisco Nexus switches can be used with
vPC for additional switch redundancy while providing active-active links to servers, thus enabling aggregate 40-
Gbps bandwidth with dual links (Figure 6).
Figure 6: Fabric Link and Server Topologies