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  • Darby Weaver

    Darby Weaver's CCIE Blog - Sadikhov.com

    By Darby Weaver

    Date: April 25th, 2017

    CCIE Routing and Switching - Logs.

    The Outline is as follows:

    1. The Cisco Expert Level Labs - in no particular order at this point - the first run will be to complete as many tasks per lab as is possible in the time allotted and then spend additional time to remediate. The goal of this exercise being to actually complete every task in the shortest time possible. It can take a while to complete 25 full Configuration Labs and 15 Troubleshooting Labs. Depending on my results and learning level with speed and efficiency improvement I may opt to repeat these labs one or more times.

    2. Practice Exams - I use a variety of Cisco Press Books, Exam Cram, Boson, and many other test engines. I'll be taking these periodically. Some of my favorite vendors created question banks for what was called Open Ended Questions and those are awesome too. Configureterminal.com created some excellent learning aids for CCNA to CCIE in multiple tracks and per technology. Cisco has the binary game and Chris Bryant offs a ton of questions - so many more. You'll notice that I have a flare for trivia - so you'll see me deviate from time to time to master one or more of these - and if you notice I do this to the point of exhaustion and 100% clarity - then you can see why and how I am able to come and go into test centers, complete my exams, and be on my way faster than Clark Kent in a telephone booth...

    3. Study Groups - I do these from time to time as a diversion and also as a means of helping others and forming networks and lasting friendships with other like minded professionals and I've always found the relationships to be long lasting and mutually beneficial.

    4. Vendors Labs, Videos, and Classes - Results may vary. I've found there are quite a few awesome trainers and companies out there in my experience and as I complete these labs mentioned above - I'll demonstrate exactly what I've learned from them all, each and every one, along the way.

    5. Questions and Answers - I've always taken the time to answer questions and answers as they come my way. I'll continue to do so.

    It's time to turn the lights on here at Sadikhov.com - The Best Learning Network on the Planet.

    Thanks

    Darby Weaver
    The Cisco Network Architect
    http://www.darbyslogs.blogspot.com
    http://www.linkedin.com/in/darbyweaver



    • 0 comments
    • 885 views

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  7. Date: April 25th, 2017

    CCIE Routing and Switching - Logs.

    The Outline is as follows:

    1. The Cisco Expert Level Labs - in no particular order at this point - the first run will be to complete as many tasks per lab as is possible in the time allotted and then spend additional time to remediate. The goal of this exercise being to actually complete every task in the shortest time possible. It can take a while to complete 25 full Configuration Labs and 15 Troubleshooting Labs. Depending on my results and learning level with speed and efficiency improvement I may opt to repeat these labs one or more times.

    2. Practice Exams - I use a variety of Cisco Press Books, Exam Cram, Boson, and many other test engines. I'll be taking these periodically. Some of my favorite vendors created question banks for what was called Open Ended Questions and those are awesome too. Configureterminal.com created some excellent learning aids for CCNA to CCIE in multiple tracks and per technology. Cisco has the binary game and Chris Bryant offs a ton of questions - so many more. You'll notice that I have a flare for trivia - so you'll see me deviate from time to time to master one or more of these - and if you notice I do this to the point of exhaustion and 100% clarity - then you can see why and how I am able to come and go into test centers, complete my exams, and be on my way faster than Clark Kent in a telephone booth...

    3. Study Groups - I do these from time to time as a diversion and also as a means of helping others and forming networks and lasting friendships with other like minded professionals and I've always found the relationships to be long lasting and mutually beneficial.

    4. Vendors Labs, Videos, and Classes - Results may vary. I've found there are quite a few awesome trainers and companies out there in my experience and as I complete these labs mentioned above - I'll demonstrate exactly what I've learned from them all, each and every one, along the way.

    5. Questions and Answers - I've always taken the time to answer questions and answers as they come my way. I'll continue to do so.

    It's time to turn the lights on here at Sadikhov.com - The Best Learning Network on the Planet.

    Thanks

    Darby Weaver
    The Cisco Network Architect
    http://www.darbyslogs.blogspot.com
    http://www.linkedin.com/in/darbyweaver



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    Hi, we are an ISP with two main STM providers, we tried to configure fail-over on our edge router but it didn't work. please can any one assist.

     

    thank you

     

     

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    CCIE Exam

    Candidates must make an initial attempt of the CCIE lab exam within 18 months of passing the CCIE written exam. Candidates who do not pass must reattempt the lab exam within 12 months of their last scored attempt in order for their written exam to remain valid. If a candidate does not pass the lab exam within three years of passing the written exam, he or she must retake the written exam before being allowed to attempt the lab exam again

    Written

    Exam: Retakes

    There is no limit to the number of attempts that can be made on the written exam. However, candidates must wait 5 calendar days between exam attempts. Once a candidate passes a particular written exam, he or she may not retake that same exam for at least 180 days. (Though rare, the need to retake an exam that has already been passed might occur in certain recertification situations.)

    Written Exam: Scoring

    Pass marks are set by using statistical analysis and are subject to change. The pass score is given on the examination score sheet at the end of the test. Along with the candidate's score, there is a notation of either PASS or FAIL. Scores on written exams are automatically downloaded from testing vendors, but may take up to 10 days to appear in the CCIE database.

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    appeared for 642-813 today. absolutely horrific experience I had

     

    AAAdot1x Lab

     

    1. copy runn start does not work

     

    2. "match ip address 10" does not work, although "match ?" shows ip, "match ip ?" shows address and "match ip address ?" shows acl number....

     

    3. wr does not work

     

    4. 43 questions

     

    5. I could attempt 20 questions and then all hell broke down..

     

    The damn thing hangs, and the administrator, the poor thing did not have a clue as to what was happening. admins tried to resume the exam in vain.. they called pearson and after 2-3 attempts, support at pearson say that my exam folder is corrupt for whatever reason. They have asked the centre to create an ?incident? and send the exam folder zipped to them.

     

    Now I don't know if they are going to reschedule my exam for free or not. Really pathetic exam experience. I don't know how some centres get pearson vue centre status. The adminis in the centre tried everything including installing an internet dongle to connect to internet even after knowing that internet connection had no problem.

     

    BTW, in the 20 questions, around 10 were from "145 ActualTest-642-813-v10-April-v11-FreedomSyria", rest I have not seen before but not tough.

     

    Rgds

     

    Rocky5

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    Hi, this is Azmatullah from Hyderabad, I want some serious partners who want to crack the CCIE Voice Lab, anyone interested, please let me know, my Email ID azmathullah77@gmail.com.

     

    If you are in Hyderabad we can have a meeting once.

     

    Best of Luck for All the CCIE Aspirants.

     

    Thank you & Best Regards

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    Hi request immediate guidance.

     

    I was planning to do CCIE security course and I am a beginner hence will start from CCNA (basics). I was told that I shouldn't be doing CCIE rather I should go for Checkpoint certifications. I am unable to decide on the same.

     

    Kindly suggest which one is better and has a good scope.

     

    Thanks in advance

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    I have run into multiple issues while trying to setup the access server. Its a cisco 2511, I have done some basic configurations and I am able to telnet to my router R1. The problem is I cant go back to the access server. I have tried ctrl+shift+6-X. I think I am missing something on R1 that will allow it to terminate the telnet session. Anyone knows what am I doing wrong? Exit, Esc, new telnet session .... etc nothing works. I have to restart the Access Server to get back to it.

    Thanks for helping.

    .

    Following are the outputs from the 'Access Server' and R1;

     

     

     

     

    TermServ#sh run

    Building configuration...

     

    Current configuration : 1188 bytes

    !

    version 12.1

    no service single-slot-reload-enable

    service timestamps debug uptime

    service timestamps log uptime

    no service password-encryption

    service udp-small-servers

    service tcp-small-servers

    !

    hostname TermServ

    !

    !

    !

    !

    !

    !

    ip subnet-zero

    no ip domain-lookup

    ip host SW3 2012 192.168.10.10

    ip host SW4 2013 192.168.10.10

    ip host SW2 2011 192.168.10.10

    ip host SW1 2010 192.168.10.10

    ip host BB3 2009 192.168.10.10

    ip host BB2 2008 192.168.10.10

    ip host BB1 2007 192.168.10.10

    ip host R6 2006 192.168.10.10

    ip host R5 2005 192.168.10.10

    ip host R4 2004 192.168.10.10

    ip host R3 2003 192.168.10.10

    ip host R2 2002 192.168.10.10

    ip host R1 2001 192.168.10.10

    !

    !

    !

    !

    interface Loopback0

    ip address 192.168.10.10 255.255.255.0

    !

    interface Ethernet0

    ip address 192.168.1.1 255.255.255.0

    no ip route-cache

    no ip mroute-cache

    !

    interface Serial0

    no ip address

    no ip route-cache

    no ip mroute-cache

    shutdown

    no fair-queue

    !

    interface Serial1

    no ip address

    no ip route-cache

    no ip mroute-cache

    shutdown

    !

    ip classless

    no ip http server

    !

    !

    line con 0

    exec-timeout 0 0

    logging synchronous

    line 1 16

    transport input all

    line aux 0

    transport input all

    line vty 0 4

    login

    !

    end

     

     

    +++++++++++++++++++++++++++++++++++++++++++++++++++

     

     

    R1#sh run

    Building configuration...

     

    Current configuration : 727 bytes

    !

    version 12.4

    service timestamps debug datetime msec

    service timestamps log datetime msec

    no service password-encryption

    !

    hostname R1

    !

    boot-start-marker

    boot-end-marker

    !

    !

    no aaa new-model

    no network-clock-participate slot 1

    no network-clock-participate wic 0

    ip cef

    !

    !

    !

    !

    ip auth-proxy max-nodata-conns 3

    ip admission max-nodata-conns 3

    !

    !

    !

    !

    !

    !

    interface FastEthernet0/0

    no ip address

    shutdown

    duplex auto

    speed auto

    !

    interface Serial0/0

    no ip address

    shutdown

    !

    interface Serial0/1

    no ip address

    shutdown

    !

    ip forward-protocol nd

    !

    !

    ip http server

    no ip http secure-server

    !

    !

    !

    !

    control-plane

    !

    !

    !

    !

    line con 0

    line aux 0

    line vty 0 4

    login

    !

    !

    end

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    Hi

     

    I am planning to do the Java developer certification so, if any one has sample questions, I would like to have them.

  8. Hi,

    I have ipv6 address fe80::21f:a4ff:fe91:2e44%4. This is the address of modem/router.

     

    I am unable to open this address in browser to view the web configuration. I am able to telnet to fe80::21f:a4ff:fe91:2e44%4, view the console UI & can do settings.

     

    I can also open 192.168.1.1(IPv4 address of modem/router) in browser.

     

    I tried [fe80::21f:a4ff:fe91:2e44] in all browsers like IE, Firefox & Chrome. It was not possible.

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    DRSEnt OSPF/ACL PT Practice SBA

    A few things to keep in mind while completing this activity:

    1. Do not use the browser Back button or close or reload any exam windows during the exam.
    2. Do not close Packet Tracer when you are done. It will close automatically.
    3. Click the Submit Assessment button to submit your work.

    Introduction

    In this practice Packet Tracer Skills Exam, you will do as follows:

    · finish the configuration of a partially configured network

    · establish connectivity within the enterprise and to the Internet

    · implement access control lists based on a set of security policies

    Addressing Table

    Device

    Interface

    Address

    Subnet Mask

    Default Gateway

    Main

    Fa0/0

    10.10.10.193

    255.255.255.224

    n/a

    S0/0/0

    10.10.10.249

    255.255.255.252

    n/a

    S0/1/0

    10.10.10.253

    255.255.255.252

    n/a

    S0/0/1

    198.133.219.18

    255.255.255.252

    n/a

    Lo0

    192.168.1.3

    255.255.255.255

    n/a

    Admin

    Fa0/0

    10.10.10.129

    255.255.255.192

    n/a

    Fa0/1

    10.10.10.225

    255.255.255.240

    n/a

    S0/0/0

    10.10.10.250

    255.255.255.252

    n/a

    Lo0

    192.168.1.1

    255.255.255.255

    n/a

    BldgA

    Fa0/0

    10.10.10.1

    255.255.255.128

    n/a

    Fa0/1

     

     

    n/a

    S0/0/0

    10.10.10.253

    255.255.255.252

    n/a

    Lo0

    192.168.1.2

    255.255.255.255

    n/a

    Teacher

    NIC

    10.10.10.4

    255.255.255.128

    10.10.10.1

    Student

    NIC

    10.10.10.5

    255.255.255.128

    10.10.10.1

    Staff

    NIC

     

     

     

    XYZ Uni Server

    NIC

    10.10.10.200

    192.31.7.53

    255.255.255.224

    10.10.10.193

    NOTE: The password for user EXEC mode is cisco. The password for privileged EXEC mode is class.

    Step 1: Configure the Device Basics.

    Use the IP addresses in the Addressing Table and your subnetting skills to determine the missing IP addresses according to the following guidelines:

    a. Configure Fa0/1 interface on BldgA with the highest (last) host IP address in the subnet.

    b. Configure Staff with the highest (last) host IP address in the subnet

    c. Verify connectivity.

    Step 2: Configure OSPF.

    a. Use the following requirements to configure OSPF on Main, Admin, and BldgA.

    · Use the process ID 5.
    · Advertise each subnet individually in area 0 with its corresponding wildcard mask. (Main should not advertise the link to the Internet.)
    · Verify OSPF convergence.

    b. Configure OSPF authentication on the links between BldgA and Admin, Admin and Main, and Main and BldgA.

    · Encrypt the updates using MD5 authentication. Authentication should be enabled for the entire area 0.
    · On the appropriate interfaces, use a key ID of
    10
    and the password
    xyzunipass
    .
    · Verify OSPF convergence.

    c. Modify the OSPF configuration.

    · Modify both sides of the link between Main and BldgA to reflect the actual bandwidth of 768 Kb/s.
    · Change the priority on Admin so that it is the preferred DR for the LAN it shares with BldgA.

    d. Propagate a default route in the OSPF updates.

    · Configure a default route on Main and point it to the Internet. Use the
    outbound interface
    argument.
    · Configure OSPF to advertise the default route to neighbors.

    e. Verify connectivity.

    Step 3: Configure Access Control Lists.

    a. Filter inbound traffic from the Internet. Configure and apply a single ACL numbered 150 on the correct router that will implement the following policy in order:

    · Allow only HTTP access to the XYZ Uni Server at its public address 192.31.7.53.
    · Allow all established TCP connections.
    · Allow all ICMP replies and unreachable messages.

    b. Verify that the policy is successfully implemented.

    c. Filter traffic from the BldgA LAN. Configure and apply on the router a single ACL numbered 175 that will limit network traffic and will implement the following policy:

    · Hosts from the LAN connected to the Fa0/0 interface of BldgA are blocked from accessing hosts on the Admin Staff LAN.
    · All other traffic is allowed anywhere.

    d. Verify that the policy is successfully implemented.

    Step 4: Verify Connectivity.

    Using tools such as ping and show commands, verify connectivity in the network.

    Version 1.0

    Created in Packet Tracer 5.3.2.0027 and Marvel 1.0.1

    All contents are Copyright © 1992 - 2011 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.

     

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    Hi All,

     

    I am a CCNA certified from Bangalore.I just want to turn my career into cisco security or voice.....Please advice me with your valuable suggestions and reasons behind that.

     

    Thanks in advance

    Amit

     

     

    Source: CISCO SECURITY VS VOICE

  9. BGP "allowas-in" is usually used on the CE and "as-override" on the PE.

     

    allowas-in - permit bgp updates containing local AS.

     

    as-override - replace AS in BGP updates to local AS.

     

     

     

     

     

  10. 1.For Class C address Subnetting (192-223 as first octet in IP address) only i.e 255.255.255.?

     

    Maximum Bits that can be borrowed is 7 (you cannot borrow all It will be a host)

    FORMULA

    N=no of bits borrowed

    Prefix=32-N

    Subnet=256-2^N

    Boundaries of Subnets=256-Subnet

     

    e.g

    N=2 Most cases its WAN

    Prefix=32-2=30 (or/30)

    Subnet=256-2^2=256-4=252 (255.255.255.252)

     

    Boundaries of Subnets=256-252=4 (ie. 0-3,4-7,8-11 etc)

    -Remember The 3,7,11 always come as odd numbers

     

    You can check with any class C address

     

    I will be posting soon for Class A and Class B

     

    :)

    With Regards

     

    Source: Tip To Remember Subnetting For Cisco Exam

  11. Hi

     

    Min reqs are listed here http://www.cisco.com/en/US/prod/collateral/routers/ps5854/product_data_sheet0900aecd80581fe6_ps5853_Products_Data_Sheet.html

     

    If you are sure everything is as it should be contact your reseller or raise a TAC id you have smartnet

     

    Mark

     

    Mark,

     

    You are the man. I actually have a copy of that same document in the web page you sited. It was the same document that informed my decisioned.

     

    Going through the doc you can see that it the card is support on 1841 but my won't work. I think the only option I have is to visit TAC.

     

    You are so kind Mark. Thank you.

     

    Source: ISSUES WITH 2-Port Fast Ethernet High-Speed WIC

  12. Many of you plan or just started their careers as in the industry. I would like to share some of my thought on the matter with you. In fact, I'm not sharing with you, I'm sharing with myself but young and novice :)

     

     

    The very first thing is this: train yourself to study hard. You may see lots of experienced people in forums, IRC channels and other communities and feel yourself involved wasting all your time on those resources. You should, however, remember that those people earned their expertise by studying hard, not by socialising only. It is ok to sorta polish some questions and technical oddities but please - invest your time wisely.

     

    Don't blame your boring entry-level position for all your misfortunes and luck of progress. I learned this from my modest experience. Believe me, even if you work for a top Cisco Gold Partner System Integrator most of your self-development will concentrate in a few clusters when you faced a big chunk of some new technology, read several book to prepare for your exam. 90% of the time you'll be doing same old boring crap and won't learn nothing new.

     

    Most of the good engineers I know never rely on their company, their colleagues, friends, etc. They never loiter and learn nothing in wait of some mythical good big projects to come. They study constantly. They spend their own time cut from their families. This is the curse of this industry - you will never succeed if you work 9 till 5.

     

    If you're young - don't run after quick money. Plan your technical career 2-3 years ahead and stick to it (unless you discover that your plan is silly). If you're 1st line support engineer - you may get lots of responses to your CV. The more skilled you become, the less responses you'll get. So, don't be fooled that you'll be able to find a job in a week. Don't rush after money and don't work with silly technologies - you'll regret it. Personal example: I once went for some money which looked good back then for me and wasted almost a year working with Videoconferencing and similar trivial crap until I realised that such a specialisation is poor in terms of growth. I still regret that I was blind and haven't stayed in a less-paid but more perspective position in ISP.

     

     

    And the last one for now - yet the most important - don't be too geeky, learn how to build your professional network. I realised it pretty late too and see what I've missed. The bitter fact of this life is that you'll almost never see the best positions in public access. The better some position is (in terms of money or interest) the more chances that someone will try to hire from his/her social network. There isn't anything dirty in this - people simply try to work with someone they know and trust. Lots of engineers actually migrate from one company into another in flocks - someone becomes chief engineer and brings his mates from the previous company. They split and unite again many times. This industry is very small as you'll see.

     

     

     

    That's it for now. You may also be interesting in my ideas on networking books: http://packetfactory.info/

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    OSPF is a complex protocol. To help beginners grasp abstract its concepts, a different approach is taken -- Visualizing OSPF simulation. This tutorial, OSPF basic, simulates the basic OSPF activities on a simple topology: H1-R1-R2-H2. R1 and R2 are routers. H1 and H2 are hosts. This simulation shows 4 stages:

    1) R1 and R2 are not running OSPF. H1 ping H2. It fails.

    2) Start OSPF on two routers. R1 and R2 discover each other as neighbors by flooding Hello.

    3) R1 and R2 develop Full relationship and synchronize their LSA (Link State Advertisement) database by sending DD, Request, and Update. R1 and R2 refresh their routing tables. H1 and H2 become reachable.

    4) H1 pings H2 again. It succeeds this time.

    Q1. What is OSPF?

    Answer: OSPF is a link state routing protocol. OSPF routers exchange their Link State Advertisement (OSPF LSA) to learn interface IP addresses from each other. Each router saves its LSAs in its Link State Database (LSDB.) Neighboring nodes synchronize their LSDBs. With consistent LSDBs, OSPF routers are able to calculate shortest paths to reach destinations.

    Q2. What does OSPF do?

    Answer: Roughly, OSPF is going through the following stages:

    1) OSPF node creates a Router LSA to describe its interface IP addresses. This LSA is the most basic LSA.

    2) Routers discover neighbors by flooding Hello. When a pair find each other, they are in 2-way state.

    3) Neighbors synchronize their LSDBs in three steps:

    i. Send DD to get LSDB catalog from each other.

    ii. Send Request to ask for missing LSAs.

    iii. Send Update to transmit LSAs requested.

    When two neighbors have the same LSDB, they are in Full Adjacency state.

    4) With the same LSDB, routers have consistent knowledge of the network topology and interface IP addresses. They can calculate routing paths independently and update their routing tables. The collection of routing tables from OSPF routers provides the shortest paths between destinations.

    Q3. What is Router LSA?

    Answer: Each OSPF router creates a Router LSA to describe its interfaces' IP addresses. In a very simple OSPF network, only Router LSAs are needed to calculate shortest paths.

    Q4. What does Router LSA do?

    Answer: In a simple OSPF network (no LAN, no area), neighboring nodes exchange their Router LSAs and learn how many links its neighbor has, and their interface IP addresses. After neighbor propagation, all OSPF nodes have the same set of Router LSAs in their LSDBs. Now they have the same knowledge of network topology.

    Q5. How can a router use LSDB to calculate routing paths?

    Answer: From LSDB, an OSPF node learns the complete topology of the network: the number of routers being connected; Individual router's interfaces and their IP addresses; Interface link costs (OSPF metric). With such detail information, OSPF calculates shortest paths to reach all destinations found in LSDB.

    For example [a], in the OSPF simulation, R1's LSDB contains two Router LSAs:

    1) R1 originated LSA contains two IP addresses: 192.168.1.0/24,192.168.3.0/30.

    2) R2 originated LSA contains two IP addresses: 192.168.2.0/24,192.168.3.0/30.

    After LSDB synchronization, R1 and R2 both have these two LSAs. And they know that R1 and R2 are connected by the link 192.168.3.0. Now R1 can calculate routing path to reach remote destination 192.11.68.2.2 and adds an entry (192.168.2.0/24, S1/0) to its routing table.

    Note [a]: This article is the FAQ of OSPF simulation. After reading, you can play the interactive simulation listed in External Links. It visualize OSPF work flow with moving packets are changing tables.

    External links for interactive OSPF simulations:

    1. OSPF simulation for beginners (This article): http://www.visualland.net/view.php?cid=767&protocol=OSPF&title=1.1%20OSPF%20basic&ctype=1

    2. List of additional interactive OSPF simulation (Table of Content): http://www.visualland.net/protocol.overview.php?p=OSPF&protocol=&title=0.%20OSPF%20Overview&ctype=1

  13. Spending the rest of this week swatting up (no dumping) on getting

    into exam mode and timing myself with exam questions and

    ensuring i read the questions properly and understand ciscos testing

    requirements, more updates to follow.

  14. Hello Friends !!

     

    I just read a great news about CompTIA PDI+ Certification. This certification is going to help the young IT professionals who are seeking to grab the opportunity to get in to big companies like Canan USA, Panasonic, HP, Xeros, Consumer Imaging Group, etc. These companies are encouraging their employees and service providers to pass the compTIA certification.

     

    read this link

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