Re: [nsp] Routing

From: RTS (rts@rdr.net)
Date: Fri Feb 20 1998 - 10:19:31 EST


Thanks for the help....

I ended up splitting my Class C into two subnets....

Randy

At 10:37 PM 2/19/98 -0800, you wrote:
>What are the subnet masks on your ethernet ports. If they are both
>255.255.255.0 you have bigger problems than you think (ie you would never
>be able to reach any host on that network).
>
>To make this work you could use variable subnetting on your routers.
>
>Assuming you only have the one classC address:
>
>Make the 2501:E0 have ip address xxx.xxx.159.1 255.255.255.128
>Make the 2509:E0 have ip address xxx.xxx.159.129 255.255.255.192
>Then you can make your serial0s be xxx.xxx.159.253 255.255.255.252
> and xxx.xxx.159.254 255.255.255.252
>
>You have to enable non-classful routing with 'ip classless' and also
>enable 'ip subnet-zero'. You will also need to run a routing protocol
>that is intelligent enough to know variable subnet lengths (EIGRP
>(easiest), OSPF, IS-IS, RIPv2 (blech)).
>
>Note that with this config you have 125 hosts possible on your primary
>ethernet segment (xxx.xxx.159.2-126) and 61 hosts possible on your 2509's
>Ethernet segment (xxx.xxx.159.130-190) and you have lots of unused
>addresses (xxx.xxx.159.192-251) that you could use later as you need them
>by creating "secondary" address on any particular port.
>
>g'luck
>GK
>
>At 06:49 PM 2/19/98 -0600, you wrote:
>>Here is what I have ... Hopefully someone can help !!!
>>
>>
>>I have a 2501 with:
>>ether port numbered xxx.xxx.159.1
>>serial port0 unnumbered e0 (xxx.xxx.159.1)
>>serial port1 no ip address
>>
>>>From serial0 goes to a TSU hooked to our provider.
>>>From serial1 goes to a 64k csu/dsu to a 64k csu/dsu on an as2509
>>>From ether0 goes to our network hub where our current PM2 and internal
>net
>>sits.
>>(everything works fine) for serial0 and ether0
>>
>>
>>On the other end of the 2501 S1 is the as2509 with:
>>ether port numbered xxx.xxx.159.26
>>serial0 port unnumbered e0
>>serial1 port shutdown
>>
>>>From Serial0 goes to the 64k csu/dsu connected back to our 2501
>>>From Ether0 goesto a hub for later expansion of that network
>>
>>
>>The Portmaster at our primary location is numbered xxx.xxx.159.25
>>
>>I would like to:
>>number the serial1 port on the 2501 xxx.xxx.xxx.2 and the s0 port of the
>>as2509 xxx.xxx.159.21
>>
>>This way I can telnet to the ports and get to the routers.
>>
>>When I try this I get the numbers overlap xxx.xxx.159.0
>>
>>
>>Needless to say I can not ping from the 2501 to the as2509 or vice-versa.
>>
>>Please help and point me in the right config direction. (Thought I had
>it
>>but what I had didnt work!)
>>
>>Randy
>>rts@rdr.net
>>
>>RTS
>>rts@rdr.net
>>Director of Operations
>>
>>Always Looking For A Better Way
>>
>>Oh Yea...Found a better way....
>>
>>RaDaR Computer Solutions (rdr.net)
>>
>>
>>
>
RTS
rts@rdr.net
Director of Operations

Always Looking For A Better Way

Oh Yea...Found a better way....

RaDaR Computer Solutions (rdr.net)



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