User guide

19
Release Notes for Cisco IOS Release 12.4T
OL-8012-09 Rev. B0
Platform-Specific Information
Feature Support
For feature support in Cisco IOS Release 12.4, see the “Feature Support” section on page 7.
Additional Notes for the Cisco 800 Series
This section contains important information about using the Cisco 800 series routers with Cisco IOS
Release 12.4T software.
ADSL2 and ADSL2+ Support
Cisco IOS Release 12.4(4)T introduces ADSL2 and ADSL2+ features for the Cisco 857, Cisco 876 and
Cisco 877 routers. For “dsl operating-mode” configuration, see the following:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124newft/124t/124t4/dsl_hwic.htm
caller-id Command
When the caller-id command (which appears under “dial-peer” in the configuration commands) is used,
the default setting is “off” for Japan and “on” for the United States. This command was introduced in
Cisco IOS Release 12.1(2)XF.
DHCP Client Support
To configure the router for Dynamic Host Configuration Protocol (DHCP) client support, perform the
following steps:
Step 1 Configure the Bridge Group Virtual Interface (BVI) by entering the ip address dhcp client-id ethernet0
command.
Specifying the value client-id ethernet0 causes the MAC address of the Ethernet interface to be used as
the client ID when the DHCP request is sent. Otherwise, the MAC address of the BVI is used as the client
ID.
Step 2 Configure Network Address Translation (NAT):
a. Configure the BVI by entering the nat outside command.
b. Configure the Ethernet interface by entering the nat inside command.
c. Create an access list under NAT by entering the access-list 1 permit ip-address command to match
all Ethernet IP addresses.
d. Configure the source list under NAT by entering the ip nat inside source list 1 interface BVI 1
overload command.
The following is a sample configuration:
Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname c827