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Configuring the Cisco Gigabit EtherSwitch EHWIC

Prerequisites for Gigabit EtherSwitch EHWICs

Configuring the Cisco Gigabit EtherSwitch EHWIC

OL-23155-01

Prerequisites for Gigabit EtherSwitch EHWICs

The following are prerequisites to configuring Cisco Gigabit EtherSwitch EHWICs:

• Configure IP routing on the host router. (See Cisco IOS IP Configuration Guide at

http://www.cisco.com/en/US/products/ps10592/products_installation_and_configuration_guides_

list.html.)

• Install the Cisco Gigabit EtherSwitch EHWIC on a Cisco ISR G2 platform running

Cisco IOS 15.1(2)T or later.

Restrictions for Gigabit EtherSwitch EHWICs

The following restrictions apply to the Cisco Gigabit EtherSwitch EHWICs:

• The Cisco Gigabit EtherSwitch EHWIC cannot function with the following modules in the chassis

at the same time:

–

HWIC-4ESW

–

HWIC-4ESW-POE

–

HWIC-D-9ESW

–

HWIC-D-9ESW-POE

–

NM-16ESW

–

NM-36ESW

• On the Cisco 1905, 1906, and 1921 ISR platforms, only a single gigabit EtherSwitch EHWIC is

supported.

• Online insertion and removal (OIR) is not supported.

• When Ethernet switches have been installed and configured in a host router, do not perform OIR of

the CompactFlash memory card in the router. OIR of the CompactFlash memory card compromises

the configuration of the Ethernet switches.

• VLAN trunking protocol (VTP) pruning is not supported.

• No more than 200 secure MAC addresses per platform are supported by an EtherSwitch EHWIC.

Information About Gigabit EtherSwitch EHWICs

Cisco Gigabit EHWICs are 10/100/1000 BaseT Layer 2 gigabit Ethernet switches with Layer 3 routing

capability. Layer 3 routing is done on the host router.

Note To link a port on a Cisco Gigabit EtherSwitch EHWIC to an enhanced EtherSwitch service module or

EtherSwitch service module in the same VTP domain, the port and the Cisco Gigabit EtherSwitch

EHWIC should be stacked.

The gigabit EHWICs are also available with a power over Ethernet (PoE) module to provide inline power

for IP telephones.

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