Ole,
I was going to post this yesterday but got called on to make a house call
to a sick router :-(
Not in direct answer to your question, but I suggest you look into traffic
shaping at the hub.
Using traffic shaping, you can prevent the hub from trying to send data
down a PVC at greater than 256 kbps - without traffic shaping, the router
doesn't know that the other end can only deal with 256 kbps, but the
telco's switch does and will drop any traffic above 256kbps.
A presentation at Networkers 2000 Melbourne had some good guidelines for
frame relay traffic shaping - I don't know a URL (or even if it's online
still), but drop me a note if you're interested.
JMcL
----- Forwarded by Jenny Mcleod/NSO/CSDA on 10/09/2001 03:07 pm -----
"Ole
Drews
Jensen" To:
[EMAIL PROTECTED]
Subject: RE: FR question -
Configuring
Sent by: Fractional T1 on the WIC-1DSU-T1
[7:19119]
nobody@groups
tudy.com
09/09/2001
03:21
am
Please
respond
to
"Ole
Drews
Jensen"
Thanks to all of you who replied to this one.
And yes, the host has 768 kbps bandwidth, and each of the three branch
offices has 256 kbps.
All I needed to know was if I needed any timeslot config on the subs, but I
now know that I don't.
Thanks again, and have a great weekend,
Ole
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ole Drews Jensen
Systems Network Manager
CCNA, MCSE, MCP+I
RWR Enterprises, Inc.
[EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://www.RouterChief.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NEED A JOB ???
http://www.oledrews.com/job
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-----Original Message-----
From: Chuck Larrieu [mailto:[EMAIL PROTECTED]]
Sent: Saturday, September 08, 2001 1:42 AM
To: [EMAIL PROTECTED]
Subject: RE: FR question - Configuring Fractional T1 on the WIC-1DSU-T1
[7:19093]
I had read the message as each of the branch offices having a 256K link. in
any case, Rik, you are probably correct in your interpretation as well.
Only Ole can clarify what he meant. My point ( and yours ) is that there is
no way or need to do further configuration on the host site with regards to
the frame connection. The timeslots are not "reserved" in terms of which
DLCI uses which timeslots or group of timeslots. all data will go out the
physical interface as fast as the wire permits. the layer three to layer
two
mapping will determine which PVC gets which of those frames.
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Rik Guyler
Sent: Friday, September 07, 2001 11:14 PM
To: [EMAIL PROTECTED]
Subject: RE: FR question - Configuring Fractional T1 on the WIC-1DSU-T1
[7:19091]
However, it appears that Ole wants to (correct me if I'm wrong) limit the
bandwidth per DLCI. Is this true? If that's the case, unfortunately there
is no way to do this on the router.
When you order a FR circuit, you are typically ordering a T1 for layer 1 so
you really are just getting 1 "pipe" capable of flowing 768k. The DLCIs
converge into this pipe in a logical fashion, not a physical one, hence the
layer 2 stuff (FR encapsulation) needed at this point.
---
Rik Guyler
-----Original Message-----
From: Chuck Larrieu [mailto:[EMAIL PROTECTED]]
Sent: Friday, September 07, 2001 11:21 PM
To: [EMAIL PROTECTED]
Subject: RE: FR question - Configuring Fractional T1 on the WIC-1DSU-T1
[7:19081]
Ole, my man, you are trying to outsmart yourself, and you're a pretty smart
guy ;->
Your T1 module is for the telco interface only. You purchased 768K, it
appears. Your DLCI's / PVC's will share that 768K with no further layer 1
actions on your part
once you have properly configured the layer one stuff - the timeslots and
B8ZS and ESF and yellow alarm and loopback and clock source, you are done
with the service module.
All that remains is assigning the DLCI's to the appropriate subinterface,
and IP addressing for the PVC's, and you are on your way.
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Ole Drews Jensen
Sent: Friday, September 07, 2001 3:11 PM
To: [EMAIL PROTECTED]
Subject: FR question - Configuring Fractional T1 on the WIC-1DSU-T1
[7:19057]
I am now on unknown territory, where no man in my shoes has walked before.
I have a Frame Relay scenario being setup, and my host router has just
received the green light from the provider.
The Frame Relay host uses 12 channels, and connects on three PVC's to three
branch offices, each with 4 channels.
I searched and found the answer on how to setup the channels on cisco's
site:
router(config-if)#service-module t1 timeslots 1-12
but will I have to do that for my three sub interfaces also?
Example:
router(config)#int s0/0
router(config-if)#service-module t1 timeslots 1-12
router(config-if)#int s0/0.101 point-to-point
router(config-subif)#frame-relay interface-dlci 101
router(config-subif)#service-module t1 timeslots 1-4
router(config-subif)#int s0/0.102 point-to-point
router(config-subif)#frame-relay interface-dlci 102
router(config-subif)#service-module t1 timeslots 5-8
router(config-subif)#int s0/0.103 point-to-point
router(config-subif)#frame-relay interface-dlci 103
router(config-subif)#service-module t1 timeslots 9-12
Thanks and have a great weekend,
Ole
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ole Drews Jensen
Systems Network Manager
CCNA, MCSE, MCP+I
RWR Enterprises, Inc.
[EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://www.RouterChief.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NEED A JOB ???
http://www.oledrews.com/job
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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http://www.groupstudy.com/form/read.php?f=7&i=19335&t=19335
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