From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boryan Yotov Subject: Re: newbie at routing Date: Thu, 08 Jun 2006 17:27:23 +0200 Message-ID: <448841DB.50308@prosyst.com> References: Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-bounces@lists.netfilter.org Errors-To: netfilter-bounces@lists.netfilter.org Content-Type: text/plain; charset="us-ascii"; format="flowed" To: netfilter@lists.netfilter.org Diana Asnani wrote: > Hi, > > its Diana again...after setting "route add -net 202.184.41.0/24 gw > 192.168.202.14", i still could not ping 202.184.41.41 ( the PC )....i > could ping the 202.184.41.0 add > i also set the "route add -net 202.184.41.0/24 gw 192.168.206.1" but it > says network unreachable.... > Lets try to analyze what information regarding your network setup, you gave till now (from all your e-Mails). First e-Mail: ^^^^^^^^^^^^^^^ > I need help!! My VLAN IP is 192.168.202.1. I can ping another PC with the > VLAN IP of 192.168.206.1 but i can't ping the 202.184.41.41 address in that > PC. Am i supposed to do some sort of routing configuration? I am using FC3 > as my OS. What am i supposed to do to ping 202.184.41.41? Thanks At least from my point of view, your network setup at this stage looks like: 1st PC 2nd PC [192.168.202.1]<------------------------>[192.168.206.1 | 202.184.41.41] You have two PCs: - first one configured with an IP address of 192.168.202.1 - second one with two IP addresses - 192.168.206.1 and 202.184.41.41 You said packets are able to travel between end 192.168.202.1 and end 192.168.206.1. In order this to be able to work, both ends need to be located on a same subnet (like 192.168.0.0/16) ... OR ... in two different subnets, while both ends have an explicit routing entry for reaching each other. Second e-Mail: ^^^^^^^^^^^^^^^ > yup 202.184.41.41 is configured in the same PC as 192.168.206.1 > the subnet mask is 255.255.255.240 The new info is that either 202.184.41.41 or 192.168.206.1, is inside a subnet with net mask 255.255.255.240: So one of the subnets below sure exists: 202.184.41.32/255.255.255.240 192.168.206.0/255.255.255.240 Third e-Mail: ^^^^^^^^^^^^^^^ > thanks for the reply...the gateway for my 192.168.202.1 PC is 192.168.202.14 > which is the vlan router which enables me to ping the 192.168.206.1 vlan > address...for the route in the network device control, the destination > network is 192.168.206.0, the subnet mask 255.255.255.240 and the gateway as > 192.168.202.14...this is what i have done so far...i am not too sure on how > i should configure a default gateway ot static route... Now, there is a new player in the picture - 1st PC's (probably default) Gateway/router which has an IP address 192.168.202.14 and some kind of link to 192.168.206.1. 1st PC 2nd PC [192.168.202.1] [192.168.206.1 | 202.184.41.41] | Gateway | +---[192.168.202.14 | ???.???.???.???]---+ Good thing is that one of the subnets is clear now - 192.168.206.0/255.255.255.240 The bad thing - it is not clear how Gateway is able to route packets from 192.168.202.1 to 192.168.206.1. Probably Gateway has a second interface within the subnet of 192.168.206.1 ... OR ... both Gateway and 2nd PC are directly connected while using explicit routes? Not clear is also what you mean by: "...for the route in the network device control, the destination network is 192.168.206.0, the subnet mask 255.255.255.240 and the gateway as 192.168.202.14...". Fourth e-Mail: ^^^^^^^^^^^^^^^ > no, the VLANs are not connected to the same router...the vlan router for > 192.168.206.1 is 192.168.206.14 > the router is Cisco... Okey, it is getting worse. You are sure that 192.168.202.1 and 192.168.206.1 (what I understand by "the VLANs") are not connected to the same router. The picture looks completely different now: 1st PC 2nd PC [192.168.202.1] [192.168.206.1 | 202.184.41.41] | Router 1 Router 2 | +--[192.168.202.14] ?? [192.168.206.14]--+ My questions are: Is the last schema matching your network topology? If true, how are Router 1 and Router 2 connected with each other? If not, could you try to write a simple schema description as the ones from above?