RE: CCIE Written [7:46567]

2002-06-16 Thread Doan Nguyen
Just passed mine too today. Crammed 1 week for it with token ring/bridging paper and your basic white paper on various subjects on CCO account. This test was way over due for me twoo years ago. What was interested for me was that as much as you worked or study about something, there are always

RE: add a 3rd T1 [7:51304]

2002-08-14 Thread Doan Nguyen
I'm not sure what your question is aiming at. Is it to find a solution to support a bigger bandwidth pipe? Or is it to optimize your bandwidth? If you're approaching max cap with 2 T1s, you might want to change out the 2621 into a 3600 series or higher and add a channelize DS3. If you're lookin

RE: traffic flow [7:73495]

2003-08-07 Thread Doan Nguyen
Netlfow would be your best way of doing this but you will need a netflow server and I think that costs additional money. AFter that you would need to write scripts to parse out the netflow data, because it's not pretty to look at. ip accounting is a quick and intrusive way to do accounting of ip

RE: PIM Mode question [7:73108]

2003-08-07 Thread Doan Nguyen
Teflon is correct. If you configure your network to use Auto-RP, then all of your interfaces will have to use PIM Sparse-Dense Mode. Besides the fact that Auto-RP uses dense mode for it's control data, if any router looses connectivity to the RP, then it would fall back to flood-and-prune. To me

Re: Default Route ... [7:72652]

2003-08-10 Thread Doan Nguyen
For future reference this is call Floating Static Routes. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73686&t=72652 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list arc

RE: igmpv2 sparse mode [7:73158]

2003-08-10 Thread Doan Nguyen
Perhaps what the answer meant was using SSM with IGMP V3. With that I think there is a separate directory that contains the list of all the active sources. The answer is very vague. :( Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73684&t=73158 ---

RE: IP Multicast Problem in relation to Reuters Xtra30 [7:73465]

2003-08-10 Thread Doan Nguyen
I doubt that this is a bandwidth issue because unless you have some sort of QoS for your multicasting, the news simply doesn't get dropped over the price update. The 3 minute time limit when the news traffic drops sounds like a dense mode problem with the flood-prune every 3 minutes. Are you runn

Re: Multicasting [7:72403]

2003-08-14 Thread Doan Nguyen
If you're using PIM Dense-Sparse mode you will need to designate an RP router because the DR needs to know where to send the (*,G) to join and the source DR needs to register the SA messages to the RP. What you can do for this case is R1-SP1---SP2-R2 make either R1 or R2 the RP. A

RE: can't ping any ip on the network from SC0 [7:74064]

2003-08-19 Thread Doan Nguyen
Hitesh, I'm assuming you're running two separate OS, one for the msfc and one for the cat switch. On the MSFC if you've enable routing on it, you should be able to ping all other IPS. However under your CAT OS, this is what you need to do for your SCO to ping out. Assign an IP address to your

RE: GRE Tunnel Recursive Routing Error [7:74035]

2003-08-19 Thread Doan Nguyen
You're getting a race condition because you're injecting the tunnel's ip address into your control plane routing. Your tunnel protocol is using your routing to transfer payload from one end to another. However when you use the ip address of the tunnel and injecting it into your routing protocol,

RE: PIM Mode question [7:73108]

2003-08-19 Thread Doan Nguyen
Steve, I'm working on multicast design a new DoD network. At this level we are a pretty big network with OC192 pipes. At this level I rather not use any dense mode type of implementation with my multicast design if possible. Got too many other protocols to deal with already. I'm currently at C

RE: ISDN Commands [7:73347]

2003-08-19 Thread Doan Nguyen
do a show isdn ? this should list all the options for ISDN that you can do. It's been several years since I worked with ISDN but I know it's there. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74209&t=73347 -- **Please support

RE: ACL VS Null Route [7:74267]

2003-08-26 Thread Doan Nguyen
P B has a good explanation. However black hole routing is usually done on the fly when you have a DoS attack and can't really change ACL on X routers in your network. Routing an unwanted network into Null is the quick and temporary way. However in the long run it is in good practice to use ACL t

RE: L2TP v3 Question [7:75255]

2003-09-11 Thread Doan Nguyen
I just had mine working. Cola#show run Building configuration... Current configuration : 2615 bytes ! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption no service single-slot-reload-enable ! hostname Cola ! redundancy no keepalive-enable m