Cisco SGE2000 Software Configuration Guide - Page 17

Management Model - 24 port gigabit switch

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Overview Management Model The Cisco Nexus 2248TP can be run with no oversubscription when its host interfaces are running in 100-Mb mode. The Cisco Nexus 2248TP-E Fabric Extender has 4 10-Gigabit Ethernet fabric interfaces and 48 100/1000BASE-T (100-Mb/1-Gigabit) Ethernet host interfaces. When its host interfaces are running in Gigabit Ethernet mode, it offers 1.2 to 1 oversubscription (48 host interfaces for four fabric interfaces). The Cisco Nexus 2232PP Fabric Extender has 8 10-Gigabit Ethernet fabric interfaces and 32 10-Gigabit Ethernet host interfaces. All host interfaces use all of the available fabric interfaces. (Static pinning is not supported. Port-channel mode is supported only on fabric interfaces.) When all host interfaces are sending traffic to all fabric interfaces, the maximum oversubscription ratio for the Cisco Nexus 2232PP is 4:1. The Cisco Nexus 2232TM Fabric Extender has 8 10-Gigabit Ethernet fabric interfaces and 32 Gigabit and 10-Gigabit Ethernet host interfaces. All host interfaces use all of the available fabric interfaces. (Static pinning is not supported. Port-channel mode is supported only on fabric interfaces.) When all host interfaces are sending traffic to all fabric interfaces, the maximum oversubscription ratio for the Cisco Nexus 2232TM is 4:1. The Cisco Nexus 2224TP Fabric Extender has 2 10-Gigabit Ethernet fabric interfaces and 24 100/1000BASE-T (100-Mb/1-Gigabit) Ethernet host interfaces. With this system, you can configure a 1.2 to 1 oversubscription (24 host interfaces for 2 fabric interfaces) or higher. Management Model The Cisco Nexus 2000 Series Fabric Extender is managed by its parent switch over the fabric interfaces through a zero-touch configuration model. The switch discovers the Fabric Extender by detecting the fabric interfaces of the Fabric Extender. After discovery, if the Fabric Extender has been correctly associated with the parent switch, the following operations are performed: 1 The switch checks the software image compatibility and upgrades the Fabric Extender if necessary. 2 The switch and Fabric Extender establish in-band IP connectivity with each other. The switch assigns an IP address in the range of loopback addresses (127.15.1.0/24) to the Fabric Extender to avoid conflicts with IP addresses that might be in use on the network. 3 The switch pushes the configuration data to the Fabric Extender. The Fabric Extender does not store any configuration locally. 4 The Fabric Extender updates the switch with its operational status. All Fabric Extender information is displayed using the switch commands for monitoring and troubleshooting. OL-25816-02 Cisco Nexus 2000 Series NX-OS Fabric Extender Software Configuration Guide 7

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The Cisco Nexus 2248TP can be run with no oversubscription when its host interfaces are running in 100-Mb
mode.
The Cisco Nexus 2248TP-E Fabric Extender has 4 10-Gigabit Ethernet fabric interfaces and 48
100/1000BASE-T (100-Mb/1-Gigabit) Ethernet host interfaces. When its host interfaces are running in Gigabit
Ethernet mode, it offers 1.2 to 1 oversubscription (48 host interfaces for four fabric interfaces).
The Cisco Nexus 2232PP Fabric Extender has 8 10-Gigabit Ethernet fabric interfaces and 32 10-Gigabit
Ethernet host interfaces. All host interfaces use all of the available fabric interfaces. (Static pinning is not
supported. Port-channel mode is supported only on fabric interfaces.) When all host interfaces are sending
traffic to all fabric interfaces, the maximum oversubscription ratio for the Cisco Nexus 2232PP is 4:1.
The Cisco Nexus 2232TM Fabric Extender has 8 10-Gigabit Ethernet fabric interfaces and 32 Gigabit and
10-Gigabit Ethernet host interfaces. All host interfaces use all of the available fabric interfaces. (Static pinning
is not supported. Port-channel mode is supported only on fabric interfaces.) When all host interfaces are
sending traffic to all fabric interfaces, the maximum oversubscription ratio for the Cisco Nexus 2232TM is
4:1.
The Cisco Nexus 2224TP Fabric Extender has 2 10-Gigabit Ethernet fabric interfaces and 24 100/1000BASE-T
(100-Mb/1-Gigabit) Ethernet host interfaces. With this system, you can configure a 1.2 to 1 oversubscription
(24 host interfaces for 2 fabric interfaces) or higher.
Management Model
The Cisco Nexus 2000 Series Fabric Extender is managed by its parent switch over the fabric interfaces
through a zero-touch configuration model. The switch discovers the Fabric Extender by detecting the fabric
interfaces of the Fabric Extender.
After discovery, if the Fabric Extender has been correctly associated with the parent switch, the following
operations are performed:
1
The switch checks the software image compatibility and upgrades the Fabric Extender if necessary.
2
The switch and Fabric Extender establish in-band IP connectivity with each other. The switch assigns an
IP address in the range of loopback addresses (127.15.1.0/24) to the Fabric Extender to avoid conflicts
with IP addresses that might be in use on the network.
3
The switch pushes the configuration data to the Fabric Extender. The Fabric Extender does not store any
configuration locally.
4
The Fabric Extender updates the switch with its operational status. All Fabric Extender information is
displayed using the switch commands for monitoring and troubleshooting.
Cisco Nexus 2000 Series NX-OS Fabric Extender Software Configuration Guide
OL-25816-02
7
Overview
Management Model