dhcp
DESCRIPTION
DHCPTRANSCRIPT
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1
CISCO gyakorlati segdlet
DHCP
Szerkesztette: Varga Sndor
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2
DHCP szerver - CISCO
Cmtartomny ltrehozsa
R1(config)#ip dhcp pool lan1
Cmtartomny megadsa
R1(config-dhcp)#network 192.168.0.0 255.255.255.0
Alaprtelmezett tjr
R1(config-dhcp)#default-router 192.168.0.1
DNS szerver
R1(config-dhcp)#dns-server 1.2.3.4
Brleti id
R1(config-dhcp)#lease 1 12 30
Domn nv
R1(config-dhcp)#domain-name home.local
Cmtartomny kizrsa
R1(config)#ip dhcp excluded-address 192.168.0.1 192.168.0.10
IP cm ktse MAC cmhez
R1(config)#ip dhcp pool FIXIP
R1(dhcp-config)#host 200.20.2.20 255.255.255.0
R1(dhcp-config)#client-identifier 0102.0010.0012.34
R1(dhcp-config)#hardware-address 01b7.0813.8811.66
Tovbbt gynk (fogad interfszen)
R1(config-if)#ip helper-address 192.168.10.1
Brelt trlse
R1#clear ip dhcp binding *
Ellenrzs
R1#show running-config
R1#show ip dhcp binding
R1#show ip dhcp pool
R1#show ip dhcp server statistics
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3
IPv6 DHCP szerver - CISCO
llapottart
R1(config)#ipv6 unicast-routing
R1(config)#ipv6 dhcp pool Stateful_DHCP
R1(config-dhcpv6)#address prefix 2001:DB8:acad:1::/64 lifetime
infinite infinite
R1(config-dhcpv6)#dns-server AAAA:BBBB:CCCC:DDDD::FFFF
R1(config-dhcpv6)#domain-name StatefulDHCP.com
R1(config-dhcpv6)#exit
R1(config)#interface s0/0/0
R1(config-if)#ipv6 address 2001:db8:acad:1::1/64
R1(config-if)#ipv6 dhcp server Stateful_DHCP
R1(config-if)#ipv6 nd managed-config-flag
llapotmentes
R1(config)#ipv6 unicast-routing
R1(config)#ipv6 dhcp pool Stateless_DHCP
R1(config-dhcpv6)#dns-server AAAA:BBBB:CCCC:DDDD::FFFF
R1(config-dhcpv6)#domain-name StatelessDHCP.com
R1(config-dhcpv6)#exit
R1(config)#interface s0/0/0
R1(config-if)#ipv6 address 2001:db8:acad:1::1/64
R1(config-if)#ipv6 dhcp server Stateless_DHCP
R1(config-if)#ipv6 nd other-config-flag
Ellenrzs
R1#show ipv6 dhcp pool
R1#show ipv6 dhcp binding
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4
DHCP Snooping (Switch)
DHCP snooping globlis engedlyezse
Sw1(config)#ip dhcp snooping
Azokban a VLAN-okban engedlyezzk, ahol hasznlni szeretnnk
Sw1(config)#ip dhcp snooping vlan 1
Megbzhat portok belltsa
Sw1(config)#interface fa0/24
Sw1(config-if)#ip dhcp snooping trust
Az sszes kioszthat IP cm lefoglalsnak megakadlyozsa:
Sw1(config)#interface range f0/1-2
Sw1(config-if-range)#ip dhcp snooping limit rate 25
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5
DHCP szerver - LINUX
DHCP szerver teleptse
root# apt-get install isc-dhcp-server
/etc/default/isc-dhcp-server
INTERFACES="eth0"
/etc/dhcp/dhcpd.conf
Domn nv megadsa
option domain-name "ceg.hu";
DNS szerver megadsa
option domain-name-servers 8.8.8.8, 8.8.4.4;
Brleti id
default-lease-time 600;
max-lease-time 7200;
Kioszthat cmtartomny megadsa
subnet 200.20.2.0 netmask 255.255.255.0 {
range 200.20.2.10 200.20.2.50;
option subnet-mask 255.255.255.0;
option broadcast-address 200.20.2.255;
option routers 200.20.2.1;
option domain-name "ceg.hu";
option domain-name-servers 200.20.2.2, 200.20.2.3;
}
IP cm ktse MAC cmhez
host PC1 {
hardware ethernet 00:0D:87:B3:AE:A6;
fixed-address 200.20.2.10;
}
Szolgltats jraindtsa
root# /etc/init.d/isc-dhcp-server restart
DHCP kliens
/etc/network/interfaces
auto eth0
iface eth0 inet dhcp
DHCP szerver - CISCOIPv6 DHCP szerver - CISCODHCP Snooping (Switch)DHCP szerver - LINUX