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2 vlan with 2 dhcp pool on router 1841

telematic_2
Level 1
Level 1

Hello everyone,

we've to configure our router 1841 to use both 2 interface Fe for two different vlan (also the second has to go on internet).

Actually we have int Fe0/0 configured with an ip address 192.168.1.1 for lan1 192.168.1.0/24 and we will use the second int Fe0/1 with another ip address like 192.168.2.1 for lan2 192.168.2.0/24.

Actually we have a dhcp pool for lan1 and all it's working, see below configuration:

ip dhcp pool LAN1

network 192.168.1.0 255.255.255.0
domain-name xxxxx
default-router 192.168.1.1
dns-server 8.8.8.8
lease 0 4

!        

interface FastEthernet0/0

description LAN1

ip address 192.168.1.1 255.255.255.0

ip nat inside

ip virtual-reassembly in

speed 100

full-duplex

no snmp trap link-status

How can I configure int Fe0/1?

Now I tried toconfigure like int fe0/0 with new dhcp pool lan2. The address is released to my pc but I cannot navigate on internet? Why?

See below for ATM and Dialer configuration:

!

interface ATM0/0/0

bandwidth 2000

no ip address

no atm ilmi-keepalive

!

interface ATM0/0/0.1 point-to-point

pvc 8/35

  vbr-nrt 320 320 1

  tx-ring-limit 3

  encapsulation aal5mux ppp dialer

  dialer pool-member 1

  service-policy out VPNPRIORITY

!

!

interface Dialer0

description $FW_OUTSIDE$

ip address negotiated

ip nat outside

ip virtual-reassembly in

encapsulation ppp

dialer pool 1

dialer-group 1

ppp authentication chap callin

ppp chap hostname xxxx

ppp chap password 7 xxxxxxxxxxx

crypto map SDM_CMAP_1

thanks

Alberto

5 Replies 5

Abzal
Level 7
Level 7

Hi,

Simple like this it's not actually different what you've done with f0/0 just change ip address and mask. If you have no Internet access from 192.168.2.0 subnet then you may have forgotten to add NAT for that subnet. DHCP pool the same like for subnet 192.168.1.0/24.

ip dhcp pool LAN2

network 192.168.2.0 255.255.255.0
domain-name xxxxx
default-router 192.168.2.1
dns-server 8.8.8.8
lease 0 4

interface FastEthernet0/1

description LAN2

ip address 192.168.2.1 255.255.255.0

ip nat inside

Can you show NAT configuration?

Hope it will help.

Best regards,
Abzal

Hi,

thanks for the answer, below the nat config (the last row of this ACL is about NAT for Internet):

the others rows are various deny for vpn to our customer.

ip nat inside source route-map SDM_RMAP_17 interface Dialer0 overload

route-map SDM_RMAP_17 permit 1
match ip address 140

last row of ACL 140:

access-list 140 permit ip 192.168.1.0 0.0.0.255 any

Thanks

Alberto

Ok, then just add second subnet to ACL in route-map

access-list 140 permit ip 192.168.1.0 0.0.0.255 any

access-list 140 permit ip 192.168.2.0 0.0.0.255 any

Abzal

Best regards,
Abzal

ok, thank you, I will try asap but I think will works.

Alberto

Hi

it should work as u didnt had the matching ACL in the route map which is used for nat

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