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

!Time: Fri Oct 30 08:52:29 2009
version 4.2(2a)
interface Ethernet2/28
inherit port-profile COMMUNITY1
Kenya#
Kenya# sho port-profile
port-profile COMMUNITY1
type: Ethernet
description:
status: enabled
max-ports: 512
inherit:
config attributes:
switchport
switchport mode access
switchport private-vlan host-association 100 102
spanning-tree port type edge
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
no shutdown
evaluated config attributes:
switchport
switchport mode access
switchport private-vlan host-association 100 102
spanning-tree port type edge
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
no shutdown
assigned interfaces:
Ethernet2/21
Ethernet2/28
Kenya#
Port-Channels
Where multiple links exist between two switches, it is often preferable to treat them as a
single link from a spanning tree perspective. The benefit of this logical bundling is that
redundant physical connectivity is not blocked by spanning tree, making more bandwidth
available for data traffic. Port-channels also create a level of redundancy because the
failure of a physical link can no longer cause spanning tree to reconverge. The Nexus 7000
enables up to eight links to be aggregated in a port-channel. For optimal performance, it is
recommended that the number of links be a power of 2 (for example, 2, 4, or 8 links).
Members of a port-channel can be on the same linecard or protect against linecard failure
and can be distributed across multiple modules in the system. Port-channels use various
algorithms to hash frames as they arrive and load-balance traffic across the physical