Hello good day.
I have a laboratory mounted.
I have an ARRIS C3 and server in Centos 6.5,
it is happening that my cable modems are taking DHCP + TFTP + TOD but when I enter the modem cable to the wan part, I do not see that it takes an IP- a MASK- a GATEWAY- and a DNS so I do not have navigation.
but when I manually assign it in a static way the ip of my CPE block 172.21.0.1/16 to the modem this gives me access to the internet,
Question?
will be problem in the configuration of my cmts my networks are the following
172.17.0.1/24 server projection
10.50.0.1/16 cable network modem
172.21.0.1/16 network of my CPE
I use shorewall as nat
-------------------------------------------------------------------------
Configuration DHCPD
# Red Base eth0
subnet 172.17.0.0 netmask 255.255.255.0 {
deny client-updates;
deny unknown-clients;
range 172.17.0.100 172.17.0.105;
}
# Red CM-Cisco UBR 7246
subnet 10.50.0.0 netmask 255.255.0.0 {
option subnet-mask 255.255.0.0;
option routers 10.50.0.1;
server-name "misa.balfate.hn";
next-server 172.17.0.1;
filename "noaccess.cfg";
deny client-updates;
deny unknown-clients;
range dynamic-bootp 10.50.0.10 10.50.255.254;
}
# cpe
subnet 172.21.0.0 netmask 255.255.0.0 {
option subnet-mask 255.255.0.0;
option routers 172.21.0.1;
option domain-name-servers 8.8.8.8 , 8.8.4.4;
server-name "misa.balfate.hn";
deny client-updates;
allow unknown-clients;
range 172.21.0.10 172.21.255.254;
}
-------------------------------------------------------------------------
IN MY C3
Interface Cable 1/0
ip address 10.2.0.1 255.255.255.0 // CM NETWORK
ip address 192.168.100.65 255.255.255.224 secondary /// cpe
172.17.0.1 helper-address cable
ip route 0.0.0.0 0.0.0.0 172.17.0.1
------------------------------------------------
FastEthernet interface 0/0
description "Interface
no shutdown
! mac-address 0013.1113.b5c5
duplex full
speed 100
snmp trap link-status
load-interval 300
ip address 172.17.0.2 255.255.255.0
no allow-ip-only
management-access
no ip directed-broadcast
no ip source-verify
no ip source-verify subif
no ip l2-bg-to-bg-routing
ip verify-ip-address-filter