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Cisco Volunteering in a Village in Nigeria. [7:66028] posted 03/23/2003
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Hey Folks...
Nigeria is slowly grapping with the IT world and people are ready to learn
here. i am looking for volunteers with whom i can work together to set up a
a Cisco academy in Uyo , south South Nigeria.This may be starting any time
within the next 3 months.  I will give details to whoever is interested. Uyo
is a  peaceful state capital in south south Nigeria , with a University, a
polytechnic, and a metropolitan hub  for the south south NIgeria.
Volunteer(s) will enjoy the hospitality of the town, help bring up locals
and motivate unversity and secondary schools student towards a career in IT.
I welcome anyone interested to email me ; olubunmi@xxxxxxxxxxxx for further
Kindly pass this message across to anyone you know might be interested. 
thank you
olubunmi Isinkaye CCNP, 
Lagos Nigeria
Cisco Certification Digest  wrote:
Cisco Certification Digest Thursday, March 20 2003 Volume 02 : Number 2494

In this issue of the Cisco Certification Mailing List Digest:
RE: 6509 cam entries [7:65758]
Re: RSM Equivalent for the Catalyst 6500 [7:65760]
RE: IP header [7:65718]
RE: CCNP Certification [7:65759]
IPSec and nated ISDN router [7:65782]
pix 501 limitations [7:65785]
RE: Anybody heard of banff counters? [7:65765]
Re: Cisco Instructor - CCNA Class [7:65742]
RE: FrameRelay dlci + IP address [7:65713]
DS3 bandwidth issues [7:65790]
Re: IPSec and nated ISDN router [7:65782]
Re: pix 501 limitations [7:65785]
Re: IP header [7:65718]
Re: Getting out of hand?? [7:65676]
RE: PIX VPN home access question [7:65666]
RE: Unable to delete flash [7:65529]
RE: Rack Mount Kit for 4000 [7:65752]
Re: IP header [7:65718]
Re: DS3 bandwidth issues [7:65790]
RE: AW: ISDN Callback Config [7:65649]
Re: DS3 bandwidth issues [7:65790]
span sessions [7:65531]
RE: ISDN 803 Callbacks [7:65754]
dial up problem [7:65801]
Difference on L3 switching of Cat4500 and Cat6500? [7:65802]
RSP7000 and RSP-4-COOKIE message [7:65803]
Attack on Iraq [7:65805]
RE: is 10baseT dead? [7:65263]
PIX Questions [7:65806]
RE: Cisco Instructor - CCNA Class [7:65742]
RE: Finding device on network via cisco switch [7:65670]
Re: DS3 bandwidth issues [7:65790]
Large number of VLANS [7:65815]
RE: ISDN 803 Callbacks [7:65754]
Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65818]
2511 Reverse Telnet [7:65819]
RE: ISDN 803 Callbacks [7:65754]
RE: ISDN 803 Callbacks [7:65754]
eBGP Multi-hop [7:65823]
RE: Voice Level Adjustment [7:65701]
RE: Convert from Custome Queue to CBWFQ [7:65700]
RE: 2511 Reverse Telnet [7:65819]
RE: Large number of VLANS [7:65815]
Re: 2511 Reverse Telnet [7:65828]
RE: IPSec and nated ISDN router [7:65782]
OT: Satellite Modem [7:65830]
RE: Policy based routing [7:65776]
Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65832]
RE: Large number of VLANS [7:65815]
Why did Cisco do this? Off Topic [7:65834]
Re: eBGP Multi-hop [7:65823]
RE: eBGP Multi-hop [7:65823]
Cisco 2000 problems [7:65837]
RE: 2511 Reverse Telnet [7:65819]
Re: Difference on L3 switching of Cat4500 and Cat6500? [7:65839]
Re: Open http: traffic on firewall... [7:65755]
Re: Large number of VLANS [7:65815]
RE: Convert from Custome Queue to CBWFQ [7:65700]
Anyone configured nat under tunnel [7:65843]
Re: eBGP Multi-hop [7:65823]


Date: Wed, 19 Mar 2003 21:55:19 GMT
From: "Priscilla Oppenheimer" 
Subject: RE: 6509 cam entries [7:65758]

steve wrote:
> guys i have the following entry in my cam table that i cannot
> remove
> here is the config
> VLAN Dest MAC/Route Des [CoS] Destination Ports or VCs /
> [Protocol Type]
> ----- ------------------ ----- 
> -------------------------------------------
> 17 00-02-a5-e8-97-35 X 9/40

00-02-a5 is a Compaq vendor code. So it's an Ethernet interface from Compaq,
if that helps.

The list of vendor codes is here:

I have no idea why it would get stuck though. Seems like a bug?


> here i smy Show Ver
> WS-C6509 Software, Version NmpSW: 5.3(2)CSX
> Copyright (c) 1995-1999 by Cisco Systems
> NMP S/W compiled on Oct 11 1999, 17:45:02
> System Bootstrap Version: 5.2(1)
> and here is my config
> set port security 9/1-32,9/34-48 disable
> BUT,
> it does not matter what i do ...i can`t get rid of this entry
> ...i have tried
> ,,
> clear cam ,clear cam all ,clear arp all ,clear cam static (mac
> Add) (vlan)...
> it just wont go ...any idea`s ...i can`t reboot it`s part of a
> server farm
> (UNLESS i really have to ) i have about 300 server`s on
> this and it`s
> redundent switch
> many thanks
> steve
Date: Wed, 19 Mar 2003 22:12:55 GMT
From: "Larry Letterman" 
Subject: Re: RSM Equivalent for the Catalyst 6500 [7:65760]

The msfc-1 or the msfc-2 module is the router module for
the sup-1 or the sup-2...

Larry Letterman
Network Engineer
Cisco Systems

----- Original Message -----
From: Kevin Hafner
To: cisco@xxxxxxxxxxxxxx
Sent: Wednesday, March 19, 2003 10:10 AM
Subject: RSM Equivalent for the Catalyst 6500 [7:65760]

Goofy question here...

What internal module would be the equivalent of the WS X5302 (RSM) for the
6500 catalyst switch. If one exists anyways?

Date: Wed, 19 Mar 2003 22:18:58 GMT
From: "Priscilla Oppenheimer" 
Subject: RE: IP header [7:65718]

KW S wrote:
> Can someone tell me what is the function of the protocol field
> in the IP header.
> I get a little confused after reading from some many sources.
> Regards
> kws

The Protocol field identifies the next layer, in other words the type of
payload that IP is carrying. Almost every protocol has a way of identifying
what the next layer is. The recipient layer uses this information to figure
out which process to pass the payload to.

Ethernet II has EtherType.
IEEE 802.3 has the 802.2 Logical Link Control (LLC) Service Access Points
IP has the Protocol field.
UDP and TCP have port numbers.

The IP Protocol field identifies the next layer as being one of these:

Protocol Type in Decimal
IP 4 (tunneling)
UDP 17
GRE 47
ESP 50
AH 51

There are others but those are the most common.

Priscilla Oppenheimer
Date: Wed, 19 Mar 2003 22:19:19 GMT
From: "Cisco Doctor" 
Subject: RE: CCNP Certification [7:65759]

the new CCNP exams are already in place and you are correct in stating that
it will renew your CCNA cert. Go to and check the outlines of the
tests to see specifically what they cover.
Date: Wed, 19 Mar 2003 22:18:16 GMT
From: "Chris Penrose" 
Subject: IPSec and nated ISDN router [7:65782]

Hi all, Can anyone help me with a problem I am having trying to create a
VPN on an 801 to a PIX firewall. I have other devices working fine but
the isdn router does not seem to want to encrypt the traffic I specified
in the access list. I have applied the cypto map to both the dialer and
the bri interface and I have read somewhere that the problem is to do
with the ios natting the traffic before it gets to the crypto statement.
Does anyone that has done this have any examples they could send me, as
I can't seem to find a relevant one on the cisco site :-/

Many thanks


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Date: Wed, 19 Mar 2003 22:24:21 GMT
From: "bk" 
Subject: pix 501 limitations [7:65785]

Good day,

I thought I read somewhere that the vpn tunnel on a 501 is limited to 
3mb/sec throughput?? But I can't find that anywhere.

Has anyone actually got the inside of a 501 to use 100mbs??


Date: Wed, 19 Mar 2003 22:30:29 GMT
From: "Scott J. Hoover" 
Subject: RE: Anybody heard of banff counters? [7:65765]

Hey Dave,

The loop argument was a little far fetched. Seems anytime anybody calls TAC
these days for a switch problem, that is their first answer.

Think you probably hit the nail on the head. Thanks for your help.


- -----Original Message-----
From: MADMAN [mailto:dmadlan@xxxxxxxxx]
Sent: Wednesday, March 19, 2003 3:09 PM
To: Scott
Cc: cisco@xxxxxxxxxxxxxx
Subject: Re: Anybody heard of banff counters? [7:65765]

I don't buy the layer 2 loop argument, it's more likely an ASIC
problem, the banff is a chipset consisting of three ASICs. Do a "sh
banff-reset" and if you have a large number of reset you probably need
to replace hardware. I assume this is a Cat5000 series switch.


Scott wrote:
> They are some sort of counters in engineering mode on the catalyst. The
> only info. I could find on them says they have something to do with the
> EARL. TAC is telling somebody that it's a sign of a layer 2 loop.
> Thanks,
> Scott
- --
David Madland
CCIE# 2016
Sr. Network Engineer
Qwest Communications

I would rather have a German division in front of me than a French one
behind me."
- --- General George S. Patton
Date: Wed, 19 Mar 2003 22:45:37 GMT
From: "Tom Lisa" 
Subject: Re: Cisco Instructor - CCNA Class [7:65742]

Or the super-normal way is to have a Cisco Certified Academy Instructor
(CCAI) from an authorized Cisco Networking Academy with both on-line
curriculum and textbooks with a plethora of routers, switches, hubs,
modems, isdn/pots/t1 simulators, test equipment and numerous lab
experiments. :)

Prof. Tom Lisa, CCAI
Community College of Southern Nevada
Cisco ATC/Regional Networking Academy
"Cunctando restituit rem"

Jens Neelsen wrote:


the normal way is to have an experienced certified instructor
from a Cisco Learning Partner with the original coursebook from
Cisco and the necessary lab.


--- Robert Raver wrote:
> Hey,
> I have been given the duty to teach a CCNA class. Have any of
> you done this
> before? I was wondering what did and didn't work for you?
> What tips you
> might have. What the best way of approaching this would be.
> We will be
> using
> the Cisco Press book for the class and each student will have
> three routers
> and a switch.
> Thanks,
> Robert Raver
Date: Wed, 19 Mar 2003 22:57:42 GMT
From: "Priscilla Oppenheimer" 
Subject: RE: FrameRelay dlci + IP address [7:65713]

Please see some suggestions below.

jonathan jonathan wrote:
> Hello I am in the process of setting up a lab and have found
> the traditional frame switch config ie.
> Frame_Relay2521>en 
> Frame_Relay2521#sh run 
> Building configuration... 
> Current configuration : 1457
> bytes
> ! 
> version 12.2 
> no service
> single-slot-reload-enable
> service timestamps debug uptime 
> service timestamps log uptime 
> no service password-encryption 
> ! 
> hostname Frame_Relay2521 
> ! 
> logging rate-limit console 10 except
> errors
> ! 
> ip subnet-zero 
> no ip finger 
> ! 
> no ip dhcp-client
> network-discovery
> frame-relay switching 
> ! 
> ! 
> ! 
> ! 
> interface Serial0 
> no ip address 
> encapsulation frame-relay 
> no fair-queue 
> clockrate 1000000 
> frame-relay lmi-type ansi 
> frame-relay intf-type dce 
> frame-relay route 112 interface Serial1
> 211
> frame-relay route 113 interface Serial2
> 311
> frame-relay route 114 interface Serial3
> 411
> ! 
> interface Serial1 
> no ip address 
> encapsulation frame-relay 
> clockrate 1000000 
> frame-relay lmi-type ansi 
> frame-relay intf-type dce 
> frame-relay route 211 interface Serial0
> 112
> ! 
> interface Serial2 
> no ip addre 
> encapsulation frame-relay 
> clockrate 64000 
> frame-relay lmi-type ansi 
> frame-relay intf-type dce 
> frame-relay route 311 interface Serial0
> 113
> ! 
> interface Serial3 
> no ip address 
> encapsulation frame-relay 
> clockrate 64000 
> frame-relay lmi-type ansi 
> frame-relay intf-type dce 
> frame-relay route 411 interface Serial0
> 114

That's one way of doing a Frame Relay switch. You have chosen to forward all
traffic from S3, S2, and S1 to S0. You don't have to do it that way, but it
should work.

> my question is how do you connect to this. On the 'client'
> router how do you set the serial connections ip address.

You get to plan the IP addressing you want to use, since this is a lab.
There are no right answers, but some issues, as described below.

> I have
> set up client routers with just the dlci and lmi-type and the
> line and proto goes up but how does communication work through
> the cloud just by DLCI???

You don't communicate with just DLCIs, as you know. You use IP addresses. IP
addresses get mapped to DLCIs in two ways:

1) With the Inverse ARP protocol which is enabled by default these days, or
2) With the "frame-relay map ip IPAddress DLCI" command.

You got a great answer from someone else, but I have been thinking about
this question and wanted to add a few comments.

You have done your lab network design using a Bottom-Up approach. I would
have recommened a Top-Down approach, but that's OK. :-) Your method will
work as long as you also do some planning for the upper layers.

So, you have selected a router to act as your Frame-Relay switch and have
presumably cabled the DTE/DCE back-to-back cables. So the physical layer is
done. The physical topology is a star, with the switch in the middle, and
each router connected to a serial port on the switch.

You have also chosen Data-Link Connection Identifiers for your
data-link-layer Frame Relay switch. That's a good start.

Now, what do you want your logical topology to be? The virtual circuits
between the routers can be formed in any topology you want, partial mesh,
full mesh, hub-and-spoke. It looks like you are thinking hub-and-spoke since
your Frame Relay route statements on the switch seem to all point to S0.
That's fine, though it's not your only option.

So, in your hub-and-spoke logical topology, each spoke router will have a
virtual circuit to the hub. The spokes won't have virtual circuits between
each other, though. They will communicate through the hub. That's a common
way of designing a Frame Relay network when connecting a company
headquarters with branch offices.

Now, consider network-layer addressing. Do you want all the routers to be in
one subnet, where the hub-and-spoke topology emulates a LAN? That's a common
solution, but it has one drawback. Frame Relay doesn't handle broadcasts as
a LAN would. This causes issues for routing protocols that depend on
broadcasts/multicasts for sending info and finding neighbor routers.

Frame Relay is a non-broadcast, multi-access (NBMA) medium. But that's OK,
you can get around this in a variety of ways. For example, with OSPF, you
can tell each router who its neighbor is so they don't have to rely on
multicasts to figure this out.

Another option is to have the logical hub-and-spoke topology act like a set
of point-to-point links. There are a variety of ways of doing this, but one
typical way is to use subinterfaces at the hub. Each subinterface forms a
point-to-point link with a spoke router.

With point-to-point virtual circuits, broadcasting isn't an issue. There's
no need to send to "everyone." There's only one device at the other end of
the circuit. But the disadvantage is that each of these circuits is now an
IP subnet. Without careful planning, you'll use up your subnets.

For Cisco certification practice, you'll want to try a few ways of designing
your lab network.

After you've given some thought to logical topologies and network-layer
addressing, you better decide on a routing protocol (which actually you
should have alredy been considering when thinking about addressing too!)
Network design is iterative. Many issues get dealt with many times.

There are lots of challenges associated with getting routing protocols to
work on Frame Relay, but experts on this list know how to handle all of
them. For Cisco certs, you'll want to work with EIGRP, OSPF, IS-IS, and BGP.

> if anyone has an example config to get my mind on the right
> track i'd appreciate it. 

Someone else sent you a great example for hub-and-spoke. I was impressed! He
spent a lot of time on a great, practical answer.

> Also if i have a sub int under s0 how
> can 1 physical cable connect to multiple routers???

Remember, we've moved up the layers at this point. It's not a physical
cabling issue. It's a logical topology issue, that can be handled with
multiple virtual circuits and subinterfaces.

I hope this helped. Good luck with the lab. Keep us posted on how it goes.


Priscilla Oppenheimer

> thanks
=== message truncated ===

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