Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
Configuration Examples for EtherSwitch HWICs
115
Book Title
interface Vlan 150
description voice vlan
ip address 209.165.200.227 255.255.255.0
ip helper-address 209.165.200.228 (See
Note
below)
interface Vlan 50
description data vlan
ip address 209.165.200.220 255.255.255.0
This configuration instructs the IP phone to generate a packet with an 802.1Q VLAN ID of 150 with an
802.1p value of 5 (default for voice bearer traffic).
Note
In a centralized CallManager deployment model, the DHCP server might be located across the WAN
link. If so, an
ip helper-address
command pointing to the DHCP server should be included on the voice
VLAN interface for the IP phone. This is done to obtain its IP address as well as the address of the TFTP
server required for its configuration.
Be aware that IOS supports a DHCP server function. If this function is used, the EtherSwitch HWIC
serves as a local DHCP server and a helper address would not be required.
Inter-VLAN Routing: Example
Configuring inter-VLAN routing is identical to the configuration on an EtherSwitch HWIC with an
MSFC. Configuring an interface for WAN routing is consistent with other IOS platforms.
The following example provides a sample configuration:
interface Vlan 160
description voice vlan
ip address 10.6.1.1 255.255.255.0
interface Vlan 60
description data vlan
ip address 10.60.1.1 255.255.255.0
interface Serial0/3/0
ip address 172.3.1.2 255.255.255.0
Note
Standard IGP routing protocols such as RIP, IGRP, EIGRP, and OSPF are supported on the EtherSwitch
HWIC. Multicast routing is also supported for PIM dense mode, sparse mode and sparse-dense mode.
Single Subnet Configuration: Example
The EtherSwitch HWIC supports the use of an 802.1p-only option when configuring the voice VLAN.
Using this option allows the IP phone to tag VoIP packets with a Cost of Service of 5 on the native
VLAN, while all PC data traffic is sent untagged.
The following example shows a single subnet configuration for the EtherSwitch HWIC:
Router#
FastEthernet 0/1/2
description Port to IP Phone in single subnet
switchport access vlan 40