Cisco WS-C4003 Software Guide - Page 56
Using DHCP or RARP to Obtain an IP Address Configuration
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Using DHCP or RARP to Obtain an IP Address Configuration Chapter 3 Configuring the Switch IP Address and Default Gateway Using DHCP or RARP to Obtain an IP Address Configuration Note For complete information on how the switch uses DHCP or RARP to obtain its IP configuration, see the "Understanding Automatic IP Configuration" section on page 3-2. To use DHCP or RARP to obtain an IP address for the switch, perform this task: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Task Command Make sure there is a DHCP, BOOTP, or RARP - server on the network. Obtain the last address in the MAC address range for module 1 (the supervisor engine). This address is displayed under the MAC-Address(es) heading. (With DHCP, this step is necessary only if using the manual allocation method.) show module Add an entry for each switch in the DHCP, - BOOTP, or RARP server configuration, mapping the MAC address of the switch to the IP configuration information for the switch. (With DHCP, this step is necessary only if using the manual or automatic allocation methods.) Set the sc0 interface IP address to 0.0.0.0. set interface sc0 0.0.0.0 Reset the switch. The switch broadcasts DHCP and RARP requests only when the switch boots up. reset system When the switch reboots, confirm that the sc0 show interface interface IP address, subnet mask, and broadcast address are set correctly. For DHCP, confirm that other options (such as default gateway address) are set correctly. show ip route This example shows the switch broadcasting a DHCP request, receiving a DHCP offer, and configuring the IP address and other IP parameters according to the contents of the DHCP offer: Console> (enable) Sending RARP request with address 00:90:0c:5a:8f:ff Sending DHCP packet with address: 00:90:0c:5a:8f:ff dhcpoffer Sending DHCP packet with address: 00:90:0c:5a:8f:ff Timezone set to '', offset from UTC is 7 hours 58 minutes Timezone set to '', offset from UTC is 7 hours 58 minutes 172.16.30.32 added to DNS server table as primary server. 172.16.31.32 added to DNS server table as backup server. 172.16.32.32 added to DNS server table as backup server. NTP server 172.16.25.253 added NTP server 172.16.25.252 added %MGMT-5-DHCP_S:Assigned IP address 172.20.25.244 from DHCP Server 172.20.25.254 3-10 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 78-12647-02