D
YNAMIC

H

OST

C

ONFIGURATION

P

ROTOCOL

3-213

CLI - This example displays all the resource records learned from the
designated name servers.
Dynamic Host Configuration Protocol
Dynamic Host Configuration Protocol (DHCP) can dynamically allocate
an IPaddress and other configuration information to network clients
when they boot up. If a subnet does not already include a BOOTP or
DHCP server, you can relay DHCP client requests to a DHCP server on
another subnet, or configure the DHCP server on this switch to support
that subnet.
When configuring the DHCP server on this switch, you can configure an
address pool for each unique IP interface, or manually assign a static IP
address to clients based on their hardware address or client identifier. The
DHCP server can provide the host’s IP address, domain name, gateway
router and DNS server, information about the host’s boot image includin g
the TFTP server to access for download and the name of the boot file, or
boot information for NetBIOS Windows Internet Naming S ervice
(WINS).
Console#show dns cache3-184
NO FLAG TYPE IP TTL DOMAIN
0 4 CNAME 207.46.134.222 51 www.microsoft.akadns.net
1 4 CNAME 207.46.134.190 51 www.microsoft.akadns.net
2 4 CNAME 207.46.134.155 51 www.microsoft.akadns.net
3 4 CNAME 207.46.249.222 51 www.microsoft.akadns.net
4 4 CNAME 207.46.249.27 51 www.microsoft.akadns.net
5 4 ALIAS POINTER TO:4 51 www.microsoft.com
6 4 CNAME 207.46.68.27 71964 msn.com.tw
7 4 ALIAS POINTER TO:6 71964 www.msn.com.tw
8 4 CNAME 65.54.131.192 605 passportimages.com
9 4 ALIAS POINTER TO:8 605 www.passportimages.com
10 4 CNAME 165.193.72.190 87 global.msads.net
Console#