• RSS
  • Twitter
  • FaceBook

Security Forums

Log in

FAQ | Search | Usergroups | Profile | Register | RSS | Posting Guidelines | Recent Posts

cisco router configuration?

Users browsing this topic:0 Security Fans, 0 Stealth Security Fans
Registered Security Fans: None
Post new topic   Reply to topic   Printer-friendly version    Networking/Security Forums Index -> Connectivity // Telecommunications // Internet News

View previous topic :: View next topic  
Author Message
ursdestiny
Just Arrived
Just Arrived


Joined: 06 Jan 2005
Posts: 2
Location: Pakistan

Offline

PostPosted: Wed Mar 28, 2007 6:13 am    Post subject: cisco router configuration? Reply with quote

Hi,
I have two networks connected through a router. I can ping both sides but now I have a software which needs to broadcast itself before it can work properly on the network. I am using OSPF (Shortest path first) as the routing protocol.

Thanks
AB
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger
Sgt_B
Trusted SF Member
Trusted SF Member


Joined: 28 Oct 2002
Posts: 16777215
Location: Chicago, IL US

Offline

PostPosted: Wed Mar 28, 2007 10:14 pm    Post subject: Reply with quote

[Network A]------[Router]------[Network B]

Broadcasts on Network A will only be received by hosts on Network A. Broadcasts on Network B will only be received by hosts on Network B.

Cisco has a feature that will allow hosts on Network B to receive broadcasts from Network A. :gasp: Pure craziness! Wink

Its called IP Helper, and its necessary to do this stuff from time to time. Even though I think its just plain silly. Wink

Here's a link to the command reference entry for ip helper-address
For a more humorous explanation, just listen to Trinity Wink
Back to top
View user's profile Send private message Visit poster's website
ursdestiny
Just Arrived
Just Arrived


Joined: 06 Jan 2005
Posts: 2
Location: Pakistan

Offline

PostPosted: Sat Mar 31, 2007 6:38 am    Post subject: Reply with quote

Thanks for the help
But just for my knowledge:
Can i add entries in the routing table to configure the broadcast
Thanks
AB
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger
ursdestiny
Just Arrived
Just Arrived


Joined: 06 Jan 2005
Posts: 2
Location: Pakistan

Offline

PostPosted: Mon Apr 02, 2007 6:09 am    Post subject: Reply with quote

can ip helper command be used for different ports?
Back to top
View user's profile Send private message Send e-mail Yahoo Messenger
Sgt_B
Trusted SF Member
Trusted SF Member


Joined: 28 Oct 2002
Posts: 16777215
Location: Chicago, IL US

Offline

PostPosted: Mon Apr 02, 2007 5:19 pm    Post subject: Reply with quote

ursdestiny wrote:
Thanks for the help
But just for my knowledge:
Can i add entries in the routing table to configure the broadcast
Thanks
AB
No, the routing table won't do anything for broadcasts. By their nature broadcasts do not normally traverse routers. As such, modification to the routing table won't do anything for you. Gotta stick with the ip helper-address command.

ursdestiny wrote:
can ip helper command be used for different ports?
Thats the job of the ip forward-protocol command. Its a global configuration that defines what services (ports) are forwarded. Use those two commands in order to forward the broadcast traffic you need. Smile
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   

Post new topic   Reply to topic   Printer-friendly version    Networking/Security Forums Index -> Connectivity // Telecommunications // Internet News All times are GMT + 2 Hours
Page 1 of 1


 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Community Area

Log in | Register