RE: VLan accesability [7:34471]

2002-02-05 Thread Don Nguyen

If I'm reading your question correctly, the link between your router and
switch would be a trunk line.  You would have to set the 2610's eth0 up with
subinterfaces to route your VLAN, this is assuming you don't have a VLAN
routing capable device somewhere else in your network already.  This will
allow your two VLAN's to access the router.

HTH,
Don


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Re: VLan accesability [7:34471]

2002-02-05 Thread Don Nguyen

Doh, I assumed all of the 2600 series routers had ports capable of trunking,
forgot you need ports capable of 100mb in order to trunk =P


Don


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RE: WINS replication problem across PPP network [7:41410]

2002-04-13 Thread Don Nguyen

Ip-helper addresses entries probably won't help in your scenario, they are
used with boradcast services such as DHCP.  Try adding a static entry in the
LMHOST file on server pointing to server 2 with the #PRE and #DOM attributes
and use nbtstat -R to reload the netbios cache on server 1 after you add
this to its LMHOST file.  This should work

HTH,

Don Nguyen


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RE: CCIE Written Beta Announcement [7:41340]

2002-04-13 Thread Don Nguyen

How much are the beta exams ?


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RE: xon/xoff [7:41433]

2002-04-14 Thread Don Nguyen

Use the show line command to find out what the line number is and you can
set the flow control for the line in the line configuration.

conf t
line xxx<--- line number
flowcontrol software|hardware|none

software for xon/xoff
hardware for cts/rts
none for well none =P

HTH

Don Nguyen


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RE: Site-Site VPN Performance [7:41924]

2002-04-19 Thread Don Nguyen

It depends on how strong of encryption you want to use.  If memory serves me
correctly a 1700 series with an encryption module tops out at 1.544
mbits/sec(T1) while a 2600 with an encryption module maxes out at
4mbits/sec.  These numbers are for for encrypted traffic bandwidth using
3DES.  Another thing to consider is that DH key exchange with large keys
(>768 bits) can take a "long" time on a 2500(TAC has it listed at up to 4
seconds).  The main district office will probably need something a little
more powerful then a 1700(2600/3600, PIX or VPN concentrator) in order to
terminate 5 IPSEC vpn tunnels however, the remote schools would probably do
just fine with a 1700(which is actually what the 1700 was designed for).  Of
course this is all based on max throughput.  You could argue that all you
need are 1700's if the combined throughput of the 5 remote connections would
never exceed 1.544Mbits/sec.

HTH,

Don Nguyen


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RE: Security advice - opening ports other than 80 and [7:42333]

2002-04-23 Thread Don Nguyen

Its generally a good idea only to open ports that necesarry (eg. 80 for
http, 21 for ftp, etc..).  Opening up unnecesarry ports and/or running
unnecesarry services just opens your server up to security vulnerabilities. 
In your case I don't really understand what you're trying to do.  For a web
server using SSL you only have to allow inbound traffic to port 443, you
don't need port 80 open unless it also serves up unencrypted pages.  If you
want/need to use IPSEC you will need to allow inbound traffic on the UDP
port 500 and allow IP protocols 50 and 51(not ports 50 and 51).

HTH,

Don Nguyen


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RE: Remote access [7:42310]

2002-04-23 Thread Don Nguyen

If they can't use or a VPN solution is not viable you could look into a
virtual modem bank from a telco that services your area.  I used this as a
solution for a customer that needed dial-up access.  Basically you buy say
50-100 virtual modem lines(unless of course you think all 500 remote users
will be on simultaneously, this should give you a modem line/remote user
ratio of 10-1 to 5-1).  The telco handles the calls and you can give a
single number to your remote users.  They route this traffic to your
router/access server where you handle the authentication and access, usually
thru an ATM pipe.  However, I would recommend trying a VPN solution solution
if possible first.

HTH,
Don Nguyen


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RE: CSPM for IDS4210 [7:42788]

2002-04-28 Thread Don Nguyen

You can try the software center on cisco's website.  You might need a CCO
account in order to download the CSPM eval though.

HTH, 
Don Nguyen


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RE: switch and router pricing [7:42778]

2002-04-28 Thread Don Nguyen

So... which routers will you have on sell soon ?  Still looking to fill out
my CCIE lab =)

Don


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RE: CISCO 2600 NAT [7:43139]

2002-05-02 Thread Don Nguyen

If you have ACL's applied inbound to your NAT outside interface make sure
you explicitly allow outside inbound connections to port 5080.

HTH,
Don Nguyen


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RE: why "ip inspect" block my traffic? [7:43802]

2002-05-10 Thread Don Nguyen

You need to apply your IP inspect in the opposite direction of your external
interfaces ACL.  So, if you have an ACL applied inbound on your external
interface you need to apply your IP Inspect list outbound.  The reason
being, CBAC will inspect your outbound packets and then dynamically insert
"permit" entries at the top of your inbound ACL to allow traffic flow that's
part of the same session back in to your network.

HTH,

Don Nguyen


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RE: cheapest router supporting two ethernet ports [7:44061]

2002-05-13 Thread Don Nguyen

2514's have two ethernet ports... they are probably the cheapest 2 ethernet
port routers.  You could also go with a 4000 with a NP-2E but I think those
are roughly 100-200 more then a 2514.

HTH,

Don Nguyen


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RE: DNS - Unicast or Broadcast? [7:44060]

2002-05-13 Thread Don Nguyen

WINS is the MS bastardization of DNS =P... but to answer your question
windows uses unicast for dns query to a name server.  I noticed that you
refered to a WINS server in your question, WINS is used to netbios name
resolution not dns name resolution.  However, even here a windows client
uses unicast when querying the WINS server.

HTH,
Don Nguyen


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Which Catalyst uses CatOS [7:44107]

2002-05-13 Thread Don Nguyen

Hi all,

I was wondering which catalyst switches use the CatOS(Set-based CLI), other
then the Cat 5K's.

Thanks,

Don


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RE: Which Catalyst uses CatOS [7:44107]

2002-05-14 Thread Don Nguyen

Thanks for the responses.  I think I'm going to go with a 2926T/F.  BTW, the
PDF on www.laganiere.com is an excellent reference.

Thanks,

Don


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