Table of Contents
Advertisement
Preparing to Configure the IP Address and Default Gateway
If you reset or power cycle a switch with a DHCP- or BOOTP-obtained IP address, the information that
is learned from DHCP or BOOTP is retained. At bootup, the switch attempts to renew the lease on the
IP address. If no reply is received, the switch retains the current IP address.
Understanding BOOTP and RARP
With BOOTP and RARP, you map the switch MAC address to an IP address on the BOOTP or RARP
server. The switch retrieves its IP address from the server automatically when it boots up.
The switch broadcasts 10 BOOTP and RARP requests after all of the switch ports are online. If a
response is received, the switch sets the in-band (sc0) interface IP address to the address that is specified
in the response.
If no reply is received, the sc0 interface IP address remains set to 0.0.0.0 (if the DHCP requests also fail).
If you reset or power cycle a switch with a BOOTP or RARP-obtained IP address, the information that
is learned from BOOTP or RARP is retained.
Preparing to Configure the IP Address and Default Gateway
Before you configure the switch IP address and default gateway, obtain the following information, as
appropriate:
•
•
•
•
•
•
Booting the MSFC for the First Time
Two Multilayer Switch Feature Card (MSFC) images are provided on the MSFC bootflash: a boot loader
image and a system image. The boot loader image is a limited function system image that has network
interface code and end-host protocol code. The system image is the main Cisco IOS software image with
full multiprotocol routing support.
As shipped, the MSFC is configured to boot the boot loader image first, which then boots the system
image from the bootflash. However, if a Flash PC card is available on the supervisor engine, we
recommend that you store all new system images (upgrades) on the supervisor engine Flash PC card
instead of the bootflash on the MSFC. The boot loader image must stay on the MSFC bootflash.
Do not erase the boot loader image; this image must always remain as the first image on the MSFC
Caution
bootflash as it is always used as the first image to boot.
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
3-4
IP address for the switch (sc0 and sc1 interfaces only)
Subnet mask/number of subnet bits (sc0 and sc1 interfaces only)
(Optional) Broadcast address (sc0 and sc1 interfaces only)
VLAN membership (sc0 and sc1 interfaces only)
SLIP and SLIP destination addresses (sl0 interface only)
Interface connection type
In-band (sc0 and sc1) interfaces: Configure these interfaces when assigning an IP address,
–
subnet mask, and VLAN to the in-band management interface on the switch.
SLIP (sl0) interface: Configure this interface when setting up a point-to-point SLIP connection
–
between a terminal and the switch.
Chapter 3
Configuring the Switch IP Address and Default Gateway
OL-8978-04
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
