| Attachment | Size |
|---|---|
 network topology | 101.11 KB |
Hello,
Im new at working cmts can someone help me to configure our CMTS to work.
We already make the CM to be online and its status is operational but it still doesn't have a internet connection.
Here is the configuration of the DHCP
******************************************
allow booting ;
allow bootp;
ignore client-updates;
next-server 172.16.0.1;
option time-servers 172.16.0.1;
#CM
subnet 10.128.0.0 netmask 255.255.0.0;
}
option routers 10.128.0.1;
range 10.128.0.2 10.128.255.254;
filename "256.cfg";
option bootfile-name "256.cfg";
default-lease-time 21600;
max-lease-time 43200;
}
#CPE
subnet 123.128.0.0 netmask 255.255.0.0
{
interface enp11s0f1;
range 123.128.1.1 123.128.255.254;
option routers 123.128.0.1;
option domain-name-servers 8.8.8.8;
default-lease-time 3600;
max-lease-time 7200;
allow unknown-clients;
}
******************************************
Here is the configuration file in the modem
******************************************
Network Access Control:on
Maximum Number of CPEs:1
Privacy Enable:off
Upstream Service Flow Encodings
Service Flow Reference:1
Quality of Service Parameter Set:provisioned admitted active
Traffic Priority:1
Upstream Maximum Sustained Traffic Rate:256000
Maximum Traffic Burst:1522
Minimum Reserved Traffic Rate:32000
Assumed Minimum Reserved Rate Packet Size:64
Timeout for Active QoS Parameters:0
Timeout for Admitted QoS Parameters:0
Maximum Concatenated Burst:1522
Service Flow Scheduling Type:Best Effort
Request/Transmission Policy:0000008A
IP Type of Service Overwrite:and-mask 0xFC or-mask 0x00
Downstream Service Flow Encodings
Service Flow Reference:101
Quality of Service Parameter Set:provisioned admitted active
Traffic Priority:1
Downstream Maximum Sustained Traffic Rate:256000
Maximum Traffic Burst:1522
Minimum Reserved Traffic Rate:32000
Assumed Minimum Reserved Rate Packet Size:64
Timeout for Active QoS Parameters:0
Timeout for Admitted QoS Parameters:0
Maximum Downstream Latency:0
******************************************
I will attach the network topology of the system.
Any help would be appretiated. TIA
Can You ping the router? Address 192.168.0.1? If not there is problem with proper routing inside C3. Why isn't Your ISP connected directly into C3? What kind of inerfaces are on the router? It's very unusual to connect DHCP server with WAN interface - use second Fast Ethernet for provisioning instead. Try to ping from CPE every point from CPE to router/internet - where it stops working? What's the netmask on 123.128.0.1 in C3?
this looks suspect
#CPE
subnet 123.128.0.0 netmask 255.255.0.0
{
interface enp11s0f1;
range 123.128.1.1 123.128.255.254;
option routers 123.128.0.1;
option domain-name-servers 8.8.8.8;
default-lease-time 3600;
max-lease-time 7200;
allow unknown-clients;
}
I highly doubt you have that /16 subnet available to you. APNIC shows it belongs to China Unicom Shandong Province Network
if your going to use NAT you need to use the RFC1918 ip addresses e.g.
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
Otherwise you need your actual subnet block from your internet provider
Thank you for replying sir, were still newbie in this kind of work.
We change our CPE address to 192.168.224.0/19 but still it doesn't have internet connection.
On the router do we need to add static route to cmts?
If we need to what route should we add?
on your router you would need to NAT the 192.168.224.0/19 network
and you would either need a static route to the CMTS or some kind of routing protocol (e.g. OSPF) so that the router knows where the 192.168.224.0/19 network is
i.e. ip route 192.168.224.0/19 172.16.0.2