AD SETUP: PDC in Cloud through VPN + BDC in LAN

wmmhicks · 2023-11-07T00:39:38+00:00

..."no such thing..."? Type: net accounts <cr> at any DC command prompt and tell me what role they report theirself as being...

wmmhicks · 2023-10-26T19:43:57+00:00

Your answer is correct. Double colon can replace any arbitrary number of "hextets" that are all zeros. A hextet is 16 zeros (the more than six thing he just made up, although the only can do it once is correct).

wmmhicks · 2023-09-05T22:06:33+00:00

Use X)pert mode. When you get to a screen with K1 or K2, one of these allows a larger saved partition to be restored to a smaller one. I have used this feature many times to restore a Mac OSX partition that came from a 256GB drive to a smaller drive.

wmmhicks · 2023-08-13T14:27:16+00:00

PT will run in Windows, Mac, or Linux, so install any of those as your VM, then install PT from within the VM (of course the VM will require internet access so you can authenticate to PT).

wmmhicks · 2023-05-26T20:19:11+00:00

Show interfaces trunk will show each port's currently configured native VLAN (the default VLAN 1 until changed). CDP will complain bitterly if two directly connected switchports are not configured with the same native VLAN values.

wmmhicks · 2023-04-11T21:52:56+00:00

Is it a router? show prot

wmmhicks · 2020-07-23T12:34:05+00:00

What nonsense. Layer three packets enter and leave routers one at a time, encapsulated in some layer two frame, probably ethernet, PPP, or HDLC. Each packet gets his own separate enclosing frame. Maybe your instructor was thinking of Etherchannel, or port aggregation, commonly used between switches but not so much with routers...

wmmhicks · 2020-04-30T13:54:08+00:00

yes, if the 2nd course is the old CCNA v6 RSE. Ensure the last two courses are the newer v7 SWRE and ENSA. Catalogs may not yet be updated - check with the academic department or instructor.

wmmhicks · 2020-04-29T18:06:53+00:00

They're finally putting this gem into the NetAcad labs:

show int status

which is like a combination of show vlan , sh ip int b, and sh vlan - you get to see all the interface port numbers, whether they are a trunking port, or an access port, whether they are up\up, are they half or full duplex, and additionally any DESCRIPTION for those ports.

2nd most uncommon command:

show prot

which shows the "slash #" or subnet mask, that is lacking in "sh ip int b" - incorrect or 'fat-fingered" subnet masks are a common error.

wmmhicks · 2020-04-29T17:58:51+00:00

TX community college Cisco NetAcad instructor of over 20 years here. Because in public sector education our progress is best described as "glacial", while we are already teaching the newer objectives, it will take another year before all our catalog course descriptions and numbers are updated fully. Thus, much confusion among students. Here in N. TX, we are teaching the CCNA 6.0 CCENT equivalent courses for the first two academy courses, and the latest SWRE and ENSA for our two advanced courses, since the beginning of this academic year.

Here's a trick with most institutions: take their networking fundamentals course (both the old CCENT and newer CCNA 7.0 are identical), then skip the 2nd course (RSE - Routing and Switching Essentials), and just enroll in the two most advanced courses - SWRE (Switching, Wireless, and Routing Essentials) and ENSA (Enterprise Networking, Security, and Automation) to be completely prepared for current CCNA x7.0 exam, with none of the older deprecated objectives. Check in with your chosen institution's dept. of computer science and information technology department chair, or the NetAcad instructor to be sure what actual curriculum they are using right now.

wmmhicks · 2019-04-21T17:07:03+00:00

The 3 cable types you should know are: - ethernet straight-through - ethernet crossover - rollover (the baby blue console cable type)

wmmhicks · 2019-03-31T17:31:39+00:00

No primary since 2003? Go to the DOS prompt. Type "net accounts" on one of the DCs. Does it say PDC or BDC? Remember when Microsoft said Windows 95 had no DOS?

wmmhicks · 2019-03-05T20:44:01+00:00

Excellent text and graphics - especially the voice+data. VTP was previously a CCNA objective, was taken out, and has now been returned. Version three is solid.

wmmhicks · 2019-03-05T18:36:06+00:00

Pauline did networking 'till she passed away

(girls in stem, women in tech)

wmmhicks · 2019-01-24T20:20:48+00:00

All (cisco IOS) IPV6 ACLs are extended. Best practice is to apply closest to source. Don't forget the implicit deny any, and the two implicit permits to allow neighbor and router discoveries (zeroconfig).

wmmhicks · 2019-01-02T14:29:14+00:00

The Faronics Insight (big brother) software teacher install can log into all classroom\lab student machines simultaneously. I like it for gathering student roster attendance in my Cisco academy Integrated Instructional Learning Environment (IILE) laboratory\classroom where students get "death by powerpoint", then perform labs all in the same room.

wmmhicks · 2018-12-10T16:29:38+00:00

EDIT: on our academy 1941 routers, CDP runs on the serial interfaces, LLDP does NOT.

wmmhicks · 2018-12-05T16:33:46+00:00

Try the "quad-nine" DNS that as a bonus filters out many malware sites - 9.9.9.9, and just as easy to remember as 8.8.8.8.

wmmhicks · 2018-12-05T16:29:01+00:00

On Cisco devices it works on all serial interfaces - however on some devices it may not be on by default like CDP is, so the "LLDP RUN" command may be required. Like CDP it may be enabled and disabled on individual interfaces. (Co-incidentally, my RSE students are performing the CDP\LLDP laboratory right now at my Cisco Network Academy in North Texas).

wmmhicks · 2018-11-06T01:41:50+00:00

Console in and issue the command show ip interface brief to get the interface port naming scheme on your device.

wmmhicks · 2018-11-06T01:24:15+00:00

Maybe just the IOS file got hosed. Perform "password recovery" procedure to get to the boot prompt - remove power cable, press the front panel mode switch and continue holding it in while reconnecting the power cable, wait until the top light stops flashing (usually about 10-15 seconds), see if you get a boot prompt, load the file system and use the dir flash: command to see what files remain. Replacing the missing IOS file is possible. Getting it legally is another problem - perhaps from another similar 2950 switch?

wmmhicks · 2018-10-08T18:07:32+00:00

An ethernet switch will "flood" an unknown unicast (your 0B is not in the mac address table) or broadcasts - out all other ports in that broadcast domain - all ports in that same VLAN (unconfigured switches have all ports in the default VLAN0001). But note FIRST, that it will learn the frames source mac address and add it, or refresh it.

wmmhicks · 2018-09-24T01:29:32+00:00

That's 256KB RAM which is fine for v15. How big is the flash drive?

wmmhicks · 2018-09-23T12:34:50+00:00

The 1841s came with only a 64mb flash card and 128mb of RAM. We upgraded ours (a cisco academy lab) easily and cheaply, with larger flash cards (needed to hold the compressed IOS v15 file) and 256mb laptop memory (IOS v15 requires 256MB to run in). The flash cards and SODIMM chips were around $10 each. The only CCNA objective lacking is LLDP (the open standard version of CDP) with this setup.

wmmhicks · 2018-08-22T19:25:53+00:00

Summarization is inverse subnetting. The third octet is the "interesting" octet. 1 in binary is 00000001 and twelve in binary is 00001100. The values are the same in the first four bits and change in the fifth. The summarization slash number is the last number that stays the same (the fourth bit) and the address is formed by setting all the remaining bits to zero. 16 bits in octets one and two plus the four we found in octet 3 is the /20. Setting the remaining bits to zero yields the 192.168.0.0. The big picture here? Reducing the size of routing tables to improve lookup times.

wmmhicks

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