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Inter Vlan + DHCP help please..!

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Inter Vlan + DHCP help please..!

-nhone-
Hi

Currently I have two separate vlans (Vlan 20 , Vlan 30) Vlan 20 has a DHCP server where user can get IP address 172.18.10.x/24 router 172.18.10.1 and VLan 30 also has a separate DHCP server ip address is 172.18.20.x/24 router 172.18.20.1. I can ping 172.18.10.1 from vlan 20 and vlan 30 but when im in vlan 30 i can ping 172.18.10.1 but not my default router which is 172.18.20.1..

I have a router and this is the config

Vlan20 is up, line protocol is up
Internet address is 172.18.10.1/24
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
ip address 172.18.10.1 255.255.255.0
ip helper-address 172.18.10.2
ip helper-address 172.18.10.4
ip flow ingress

Vlan30 is up, line protocol is up
Internet address is 172.18.20.1/24
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
ip address 172.18.20.1 255.255.255.0
ip access-group Wins in
ip helper-address 172.18.10.4
ip helper-address 172.18.20.2
ip flow ingress
ip pim sparse-dense-mode


ip classless


Extended IP access list Wins
10 permit ip 172.18.20.0 0.0.0.255 172.18.10.0 0.0.0.255 (18643 matches)

172.18.10.4 is my mail server.. Mail server has one Interface connected to vlan 20..

i cannot access the mail server from vlan 30 even though i can ping other ip in vlan 20..

Thanks for your Help