Re: Help for a newbie to Cisco routing


"baron1211" <res0ew3q@xxxxxxxxxxx> wrote in message
news:a661f905-9d07-4329-ae8a-d7411500f140@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Oct 3, 11:20 am, "John Agosta" <jago...@xxxxxxxxxxxxxxxx> wrote:
"Artie Lange" <spam...@xxxxxxxxxxxxxxxx> wrote in message

news:gc5f88$nid$2@xxxxxxxxxxxxxxxxxxxx





Artie Lange wrote:
baron1211 wrote:
Hello everybody,

I hope someone can help. I have inherated a network with a business
class Cable connection and a Cisco 2960G switch. Between the Cable
modem and the switch is a netgear wireless router. The network has 25
hardwired connections and 2 wireless access points. The problem is
that the Netgear router is being overloaded and dropping the internet
connection. I have purchased a Cisco 2621 router to replace the
netgear as the router. I have configured the Router with a static
address for ethernet port 0/0 of 192.168.1.1( the address of the
internal network) and have set ethernet port 0/1 to recieve its
address from DHCP( from the cable modem). My problem is that I can
not get out from any of the computers on the network. I can ping from
the router and do a traceroute, but can't figure out how to connect
the 2 lan ports. I have been reading alot about the router and its
configuration and can not find the piece that explains how to setup
routing between the 2 lan ports. Do I need to use NAT on both ports
one pointing in and one pointing out? Or do I need to set a static
route between the ports? Or do I need a combination of the 2 options?

Thank you for any assistance.

Daryl

Most likely you will need NAT in your config. You could post some of
your
config and let us look at it? From the router can you ping to the
internet?

Re-reading the post, it looks like the router is getting an IP from the
cable service so most likely is a NAT issue. Do you also have any route
statement configured?

Do your internal users have IP configurations ?
Your internal computers were probably obtaining thier IP addresses /
gateway
information
from the Netgear router, which you have replaced.
You will need to look into configuring your new Cisco as a DHCP server
so your internal users can obtain what they need.
Once the above is verified, you will need to NAT your inside interface to
your outside interface.- Hide quoted text -

- Show quoted text -

The network has it own DHCP and DNS server on it. All the clients
recieve thier address from it. The netgear is just a router at this
point. What I am hoping to accomplish is, Keep the internal network
as it is and use the 2621 and its 2 LAN ports to allow the clients to
connect to the internet.

I have been trying to figure out how to set the routing between the 2
port on the 2621 so it passes internet traffic from the outside world
to my internal network. Below is a show ip interface output. I don't
know if this will help

Library#show ip interface
FastEthernet0/0 is up, line protocol is down
Internet address is 192.168.1.1/24
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Multicast reserved groups joined: 224.0.0.1 224.0.0.2 224.0.0.9
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP CEF switching is disabled
IP Fast switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast
Router Discovery is enabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Policy routing is disabled
Network address translation is disabled
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
BGP Policy Mapping is disabled
Serial0/0 is administratively down, line protocol is down
Internet protocol processing disabled
FastEthernet0/1 is up, line protocol is down
Internet address will be negotiated using DHCP
Broadcast address is 255.255.255.255
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is enabled
IP Flow switching is disabled
IP CEF switching is disabled
IP Fast switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Policy routing is disabled
Network address translation is disabled
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
BGP Policy Mapping is disabled

Hope this give some view ito how I have tried to set it up and where I
have messed up.

Thanks

Daryl

Your "line protocol is down" indicates the Ethernets are not terminated
correctly.
Are there hubs / switches involved ? You may have the wrong cable type.
(crossover vs straigh through issues)
Also, it would help to see a "show run" output.



.

Relevant Pages

  • Re: No Internet Access
    ... Quite often I have no internet access. ... Switching the power off /on to the modem fixes the problem. ... When I had DSL we replaced the modem, removed all computers but 1 from the network, and rewired the house. ... If you can't seen the router, open a 'cmd' prompt from 'run' and type in: ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: Accessing data over telephone...
    ... Telephone Network (PSTN) with its dedicated switching centers. ... DSLAM based telephone system using the Internet for transport. ...
    (comp.dcom.telecom.tech)
  • Re: All Messed Up!
    ... I definitely tried switching the cords, unplugging, ... ad-aware...Any more suggestions for protection? ... >check to see if you router has a firewall, ... the internet in my sorority decided to ...
    (microsoft.public.windowsxp.general)
  • dynamic IP (DHCP client) does not work
    ... using the same position and connection to the ... router of a previous PC. ... the local network was forever stuck at aquiring network ... switching back to dynamic IP still does not work. ...
    (microsoft.public.windowsxp.network_web)
  • Re: Couldnot connect to Office Network
    ... network Xerox Printer, which has IP address assigned manually. ... Internet sharing is done by sharing one computers internet DSL connection. ... Try switching network cables between the problem computer and another that's ...
    (microsoft.public.windowsxp.network_web)
Loading