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Point-to-Point, Cisco Routers, FE or SE ports?

Need to setup a point-to-point for a client and have several questions:

1. Wanted to know which is better configuration:
a. Cisco 2811 & Cisco 1841 using FasthEthernet ports to establish the point-to-point
OR
b. Cisco 2811 & Cisco 1841 usinf serial ports to establish the point-to-point

2. Are there any adavantages or disvantages in using serial ports over FastEthernet ports for the P2P or are teh FastEthernet ports just as good?
3. Also, what would be the best protocol to use to establish the P2P?
4. Should I be encrypting the traffic traveling over the P2P?

Thank you,

Keatson
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keatscon
Asked:
keatscon
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2 Solutions
 
lrmooreCommented:
1.  It all depends. What is the point-to-point connectivity options from the services provider? How far apart are these to sites? Typical P2P is dedicated T1. This requires a router with a T1 CSU/DSU module. The 1841 T1 bundle is a good choice.
2. Speed, of course. Ethernet gives you up to 100Mb speed, serial restricts to 2Mb speed.
3. Depends on the answer to #1. PPP/HDLC are serial encapsulation protocols, TCP/IP is the obvious requirement.
4. Depends on the business requirement and the P2P link type. Generally speaking, dedicated T1's don't normally need encrytion unless your business is regulated like financial, health, or other industry.
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keatsconAuthor Commented:
lmoore,

1. The circuit is a DS-1. So a FE port will not work in this case? I would need the CSU/DSU module?
1a. The sites are at opposite ends of the USA.
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lrmooreCommented:
Yes. You cannot use FE port to connect to a T1/DS1. You must use the T1 VWIC module. You need the same module for both the 1841 and the 2811 - VWIC2-1MFT-T1/E1

Are you going to pay long-distance charges on this long-haul dedicated P2P link? Have you priced out other options like MPLS?


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keatsconAuthor Commented:
lmoore,

   Why the VWIC2-1MFT-T1/E1
   and not the WIC-1DSU-T1-V2?

Thank you,
Keatscon
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keatsconAuthor Commented:
No, have not looked at MPLS. Yes we are paying long distance on the P2P.  =(
It was difficult enough finding a vendor that could offer us a P2P beween our sites.
What are the advantages in using MPLS over a P2P?
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lrmooreCommented:
>WIC-1DSU-T1-V2
This will work, too. I think the 1841 T1 bundle actually comes with this module.

MPLS offers cost advantage. Each end gets a "local" line. Also easy expansion if you get another site to include. Each subsequent site gets a single connection to the MPLS "cloud" and not a bunch of individual p2p links.
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