Practicing some OSPF configurations ( Authentication Specifically ) i found that the show command “show ip ospf e” is not listed in the show ip ospf ? ! so it does not exist but it gives and output, and i decide to investigate and found very interesting stuff.
This commands are hidden in the IOS, the reason i do not know but here they are:
show ip ospf bad-checksum
show ip ospf delete
show ip ospf delete-list
show ip ospf ev
show ip ospf events
show ip ospf maxage-list
Back Again!, Today I`m Looking Foward to Make a Whole Topology For CCNA, and when i mean Whole i mean to cover Every Aspect of CCNA in one single topology, with that i mean , Frame-relay,PPP,HDLC,VTP,OSPF,Rip,IEGRP,NAT,ACLs and some other cool stuff. Knowing that some Technologies cannot be done on Dynamips like ISDN ( You`ll have to find a way by yourself). i will Upload My .net.
note: if you still do not know how the hell i`ll emulated cisco switches i remind you, that i will be using Cisco 3640 Routers with NM-16ESW Switching Ports.
Its been a long time My friend! jaja today i finally Took the descision to go back and use Dynagen front end in spite of GNS3, some events make me do it again, i have already run some Test Labs, and everything its looking fine, need to get used to some Dynagen comands and some other things, but everything its just fine, i have a Draft of a OSPF basic Conf that i`ll post this week, and ill post somewords regarding IOS Software Arquitecture Book later.
I am Really Amazed With Routers arquitecture, principally with Next gen and Carrier Routers, today i finished reading a 3 post documentation posted by Himawan Nugroho (CCIE #8171 in RS, Sec and SP. ) in his blog (http://brokenpipes.blogspot.com) and i just have another way of seeing a router , and the way how packets are treatet inside the router Hardware, i have always asked my self how routers can do a complex job like running Ip Routing protocols, services, additional features and so on , in the software i knew there were hardware issued that really helped the router, but not on this focus himawan gives, i recommend to anyone to read his documentation of Routers Arquitecture, and i looking foward to read “Inside Cisco IOS software Arquitecture”, to learn more about Routers Deep secrets.!
Ok now that the FOCUS of this is very clear is time to Point Out the Path i`m taking to get to where i want. First of all you should know that i really want 3 CCIE path, which means very clear that I cannot study Toguether the three paths!. so i`ll have to use the Serial aproachment One BY one, One at the time ETC!.
The Three Path i am Going to achieve ( Possitive Thinking ) are CCIE Routing and Switching, CCIE Service Provider and CCIE Security , which makes very clear that R&S track will be my First focus.
Now Going on to Bussines what do i need to get CCIE R&s in the lower layers i need to prove my knowledge in other low level certifications which are:
CCNA. ( exam 640-802).
CCNP:
| 642-901 BSCI | Building Scalable Cisco Internetworks (BSCI) |
| 642-812 BCMSN | Building Cisco Multilayer Switched Networks (BCMSN) |
| 642-825 ISCW | Implementing Secure Converged Wide Area Networks (ISCW) |
| 642-845 ONT | Optimizing Converged Cisco Networks (ONT) |
and then i should focus on studiying and practicing toward CCIE ( which will get a mayor revision release on octuber to CCIE 4.0 -.-) but i`ve planned something different ( you can post comments ) when i get my CCNP i am thinking on taking CCIP,CCNA Sec and CCSP, and then prepare for CCIE, but that ill figure it out when i have my ccna and my ccnp, Now that is the really focus.
Note: You can Post Comments on what do you think of this squeme there is no prob with it.
Thinking and Reading About Other`s Blog i figure out Something i may have not let Clear The main Two Reasons Of this Blog. So Here we are To Point Them again. First of all this Blog Called “Myquest13″ This Means it is very much related to my step by step to gather the necessary knowledge to be a CCIE , when i mean CCIE i Mean being a Real Understander of Networking, i have lots of Goals which i`m organizing in a herachical manner so i can reach them in the way they should, till now i am working on my knowledge related to getting CCIE R&S ( that means taking CCNA,CCNP to prove knowledge whenever i feel ready to take any of those certifications exam ) being that clear The Second Reason is, i`m using this blog as reference to my configurations and anything i know i should remenber or understand so this mean ill have a way to catch up on anything i do not remenber or need to practice again using this blog.
This Brings some other things that may fit as objectives, meaning this can help people in some manner in their Journey to whatever they want or need ( regarding to Networking ), and my desire to do something that people can use as reference, do something and do it free, that is why i am planning on posting configuration videos on my youtube channel and uploading videos and configuration guides in my style , just like other forums and blogs do (like 7200emu,blindhog,netpro forums on cisco website etc) , so if someday someone really start reading this blog, stay tune and welcome to my Quest on achieving Eternal Networking Knowledge(lollll).
Here We are Again lol, cuz i`m taking the 640-802 i would like to Post all my configurations Regarding CCNA (Ripv2,EIGRP,OSPF,Frame relay,NAT,Access-list,PPP,ISDN, etc ), So i can Have a Reference and Summary of what i did and what i know and need to remenber, I`ll begin with Ripv2 Basic Conf.
Setting Up Ripv2.
configuring Passive Interface.
Configuring Rip Authentication.
Configuring Ripv2 Behavior ( sending and reciving Version on Interfaces ).
i Think That is all, if i found there is something Missing ill post it or Edit this Entry.
Ill be Using 2 Cisco 2621 with 64mb each, running IOS c2600-i-mz.123-26.
The Topology is as Follows.
Networks are As Follow.
Network A on Lan 1 R0 = 10.10.10.0/24
Network B on lan 2 R0 = 172.16.0.0/16
Network C on lan 1 R1 = 192.168.100.0/24
Basic Configuration on R0.
Router>enable
Router#configure terminal
Router(config)#hostname R0
R0(config)#enable secret cisco
R0(config)#service password-encryption
R0(config)#line console 0
R0(config-line)#password cisco
R0(config-line)#login
R0(config-line)#logging syn
R0(config-line)#exec-timeout 2 0
R0(config-line)#line vty 0 15
R0(config-line)#password cisco
R0(config-line)#login
R0(config-line)#logging syn
R0(config-line)#exec-timeout 2 0
R0(config-line)#exit
R0(config)#interface s0/0
R0(config-if)#clockrate 64000
R0(config-if)#bandwidth 1500
R0(config-if)#ip add 192.168.1.1 255.255.255.252
R0(config-if)#no shut
R0(config-if)#exit
R0(config)#interface f0/0
R0(config-if)#description Network A
R0(config-if)#speed 100
R0(config-if)#duplex full
!Duplex and Speed commands should also be set on the end point of the connention.
R0(config-if)#ip add 10.10.10.1 255.255.255.0
R0(config-if)#no shut
R0(config-if)#exit
R0(config)#interface f0/1
R0(config-if)#description Network B
R0(config-if)#speed 100
R0(config-if)#duplex full
R0(config-if)#ip add 172.16.0.1 255.255.0.0
R0(config-if)#no shut
R0(config-if)#exit
Basic Configuration on R1.
Router>enable
Router#configure terminal
Router(config)#hostname R1
R1(config)#enable secret cisco
R1(config)#service password-encryption
R1(config)#line console 0
R1(config-line)#password cisco
R1(config-line)# login
R1(config-line)#logging syn
R1(config-line)#exec-timeout 2 0
R1(config-line)#line vty 0 15
R1(config-line)#password cisco
R1(config-line)#login
R1(config-line)#logging syn
R1(config-line)#exec-timeout 2 0
R1(config-line)#exit
R1(config)#interface s0/0
R1(config-if)#bandwidth 1500
R1(config-if)#ip add 192.168.1.2 255.255.255.252
R1(config-if)#no shut
R1(config-if)#exit
R1(config)#interface f0/0
R1(config-if)#description Network C
R1(config-if)#speed 100
R1(config-if)#duplex full
!Duplex and Speed commands should also be set on the end point of the connention.
R1(config-if)#ip add 192.168.100.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#exit
Setting Up Ripv2 in R0.
R0(config)#router rip
R0(config-router)#version 2
R0(config-router)#network 192.168.1.0 ! Serial network
R0(config-router)#network 10.10.10.0 ! Network A
R0(config-router)#network 172.16.0.0 ! Network B
R0(config-router)#exit
If you issue a Show ip protocols with this already set up you should see Rip process and the interfaces involved in the Routing Proccess.
Setting Up Ripv2 in R1.
R1(config)#router rip
R1(config-router)#version 2
R1(config-router)#network 192.168.1.0 ! Serial network
R1(config-router)#network 192.168.100.0 ! Network C
R1(config-router)#exit
NOTE: There is something importan to Point Out Here, in this Configuration we are setting up everything with the auto-summary commands. If you have another Sumary Squeme you should use the no auto-summary command on the (config-router) mode.
Also You can Issue debug ip rip commands (databse,events,triggers) to diagnosticated Route Exchanging. to see Rip learned Routes issue a show ip route rip.
Configuring Passive interface.
A passive interface is a interface that does not send Routing information but still recives Updates.
Sending Updates on non Neihbor Routers INterfaces may present a security issue, as sending Routing info to a internet Connention,and lots of more scenarios could present a security HOle.
Configuring Passive interface on R0 Network A and B.
R0(config)#router rip
R0(config-router)#passive-interface f0/0
R0(config-router)#passive-interface f1/0
R0(config-router)#exit
Note: that is one way to set Up passive interface. the other way is show next on R1.
Configuring passive interface on R1 Network C.
R1(config)#router rip
R1(config-router)#passive-interface default ! This will set Up all interfaces in passive mode.
R1(config-router)#no passive-interface s0/0 ! Activating S0/0 interface.
Thats it all set up. You can issue a show ip protocols to see Passive interfaces and Routing participating Interfaces.
Configuring Rip Authentication on R0.
If you need to authenticate Routing Updates packets between rip Routers you need to First of all define a Key-chain then define the Authentication Mode.
R0(config)#key-chain rip ! rip is the name. you could use what you want.
R0(config-keychain)#key 1 ! define a key number ( you can have lots of key for others issues and protocols ).
R0(config-keychain-key)#key-string ripv2 ! defining the key string.
R0(config-keychain-key)#exit
R0(config-keychain)exit
R0(config)#interface s0/0
R0(config-if)ip rip authentication key-chain rip
R0(config-if)#ip rip authentication mode md5
R0(config-if)#exit
Note: if yo activate debug ip rip. you should see an output that says “ignored v2 packet from 192.168.1.2 (invalid authentication)” this is because we havent set up authentication on R1.
Configuring Rip Authentication on R1.
R1(config)#key-chain rip
R1(config-keychain)#key 1
R1(config-keychain-key)#key-string ripv2
R1(config-keychain-key)#exit
R1(config-keychain)exit
R1(config)#interface s0/0
R1(config-if)ip rip authentication key-chain rip
R1(config-if)#ip rip authentication mode md5
R1(config-if)#exit
Configuring Ripv2 Behavior on R0.
Well as you may have noted we are using Ripv2. But what if the peering Router Only accepts ripv1 packets ( Forgetting the Classful issues) we can Make R0 to send ripv1 and recive ripv1 packets.
R0(config)#interface s0/0
R0(config-if)#ip rip send version 1 ! you can also configured it to send both packets.
R0(config-if)#ip rip revice version 1 2 ! reciving v1 and v2 packets.
This Stuff is Optional to the working squeme of the topplogy and i only post it as reference for Remenber.!
Ok Everything is set Up, we have configured Ripv2 , set up passive interfaces, configure authentication between Rip Routers, and modified packets Reciving and SENDING stuff, everything should be working now. Use Ping and the other Troubleshooting Tools to check out for Issues in case there is a problem, Or post it on the comments ( if someone Ever Read this ) remenber this is a reference for me so maybe ill never answer but i`ll do my best.
I Was Thiking Today on Posting How to configure Trunk Info over a Etherchannel Logical Link, With the Step By step and related Stuff but thinking it around i thought it would be a unnecesary Stuff cause its basically the same stuff the difference its you need to add the Switchport mode trunk command on Port channel interface and on the Bundle Interfaces ( in the case of the Last conf it would be f0/1 – 8 ) , also set Up the VTP domain , VTP Server and that is ( Basic Conf! Basic CONF! ).
i am thinking in What to Post….if i should continue With Etherchannel conf! you now Further Explain of Pagp interfaces mode, Load balancing and Related Stuff…..or if I should Post Routing Protocols Basic conf you know RIPv1,RIPv2,EIGRP,OSPF,IS-IS,BGP etc! or just evrything New i learn!. We `ll see.
Here I am…. Late as you might say…. but normal for me….. asking my self What did i Did today that would get me closer to where i want to go…..not much Really… i should have revised my basic etherchannel conf, and post a new one with vlan trunk running in the Logical Link, and should also have read a chapter for ICND1 Study Guide, go to my netpro account to see what new i could learn from others posting, lots of things i could have done……..But thinking about it i am not really regreting what i`ve done today, cause i ended enjoyn a class i thought i would not ( Admin I ) , i talked about D&D and Magic with a buddy Friend, and i played a lot of FFVII Crisis core on PSP, and talked to my girlfriend ( 
), i Just Forgot my real state for some times in the day ( not working, searching for the money to take 640-802 etc ) and Just Lived My life! Cause there is no Reason in doing something that you do not like, and Living is something to Like! it doesnt matter what you do, living its first cause everything you do its based on it!.
I enyoy everything i do…From Getting lost in the passionate World of Comunications ( :d :d ) to Be a SOLDIER in FFVII, to get lost in my minds Fantasy Worlds, ( Ok i`m stopping now cause maybe if i keep Writting ill Fill up lots of Pages! lol -.- ).
So thinking about It…….Life is Worth Living no matter how you do as long as you Like It.
Ok Here We are….. Now as i Said ( or meant to said before ), i am posting my Etherchannel configuration Steps and Running Configs ( Topology Files,Net Files etc ) so you can have a Brief Review of what needs to be done to que get Basic Etherchannel Running ( no Load Balancing etc ). I have to say this is a very basic Topology i`m using meaning i will not Run Vlan Info on the Etherchannel link or anything suspicious (lol you may already know how to do that or maybe not ), so its pretty simple ( now lets Cut the chatting and start ON ).
First as i have told Before i am Using Dynamips/Dynagen Variant GNS3 (which you can get here http://www.gns3.net/ ) , to emulated Cisco Routers ( IOS you ll have to Get them yourself ).
Now the Topology Consist of 2 Multilayer Switches ( Yeah i know Dynamips does not emulate Switches ) But here is What i do:
I run 2 3640 ( Running IOS c3640-ik9s-mz.124-16 dont ask -.- ) with NM-16ESW, so we have 16 switching Ports.
Here is The Topology
ether
EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single logical link.
The EtherChannel provides full-duplex bandwidth up to 800 Mbps (Fast EtherChannel) or 2 Gbps (Gigabit EtherChannel) between your switch and another switch or host.
Each EtherChannel can consist of up to eight compatibly configured Ethernet interfaces. All interfaces in each EtherChannel must be the same speed, and all must be configured as Layer 2 interfaces.
This implementation comes in your Distribution Switches ( it can be used on other Squemes Althought ). You`ll need Very Fast speed in the connention Between your Distribution Switches and your Core knowing that Route FIltering, Routing information , and lots of more stuff may be running on your Layer 3 switches.
More info on EtherChannel : http://en.wikipedia.org/wiki/Etherchannel,http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/configuration/guide/swethchl.html
Configuration Steps.
Ok now Starting With the Conf Steps ( note: in this one ill asume you know basic configurations so i will not details any commands related to ).
First on M1 lets set basic conf.
Router>enable
Router#conf terminal
Router(config)#hostname M1
M1(config)#enable secret cisco
M1(config)#ser password-encryption
M1(config)#line con 0
M1(config-line)#password cisco
M1(config-line)#login
M1(config-line)#logging syn
M1(config-line)#exec-timeout 2 0
M1(config-line)#line vty 0 15
M1(config-line)#pass cisco
M1(config-line)#login
M1(config-line)#logging syn
M1(config-line)#exec-timeout 2 0
M1(config-line)#exit
Next Setting the Switch IP Address ( Using VLAN1 ).
M1(config)#interface Vlan1
M1(config-if)#ip add 192.168.1.1 255.255.255.252
M1(config-if)#no shut
M1(config-if)#exit
Now Setting Up the Port-channel Interface ( to which we will Aggregate The Layer 2 Ports to make the Bundle and get the Speed )
M1(config)#interface port-channel 1
M1(config-if)#no shut
M1(config-if)#switchport mode access
M1(config-if)#exit
Now We have Set up the Port-channel interface its time to decide which 8 interfaces will be used and configure each interface speed and duplex.
M1(config)# interface range f0/1 – 8 ! Considering you have configure the NM-16ESW on Slot 0 of M1
M1(config-if-range)#speed 100 ! Fast ethernet interfaces maximun speed lol
M1(config-if-range)#duplex full ! no need to explain this -.-
M1(config-if-range)#switchport mode access
M1(config-if-range)#channel-group 1 mode on ! mapping interfaces to Group 1 and setting them on. You should see interfaces added to po1 ( they might say…Joined portchannel Po1 ).
M1(config-if-range)#no shut
This done we have already setup a 800mbps Interface ( configured Basic Etherchannel ) issue a show interfaces port-channel 1 and you should see that the BW says 80000Kbit. Now we have to Set up M2 doing exactly as we did here just variying some stuff.
M2 Basic Conf.
Router>enable
Router#conf terminal
Router(config)#hostname M2
M2(config)#enable secret cisco
M2(config)#ser password-encryption
M2(config)#line con 0
M2(config-line)#password cisco
M2(config-line)#login
M2(config-line)#logging syn
M2(config-line)#exec-timeout 2 0
M2(config-line)#line vty 0 15
M2(config-line)#pass cisco
M2(config-line)#login
M2(config-line)#logging syn
M2(config-line)#exec-timeout 2 0
M2(config-line)#exit
Next Setting the Switch IP Address ( Using VLAN1 ).
M2(config)#interface Vlan1
M2(config-if)#ip add 192.168.1.2 255.255.255.252
M2(config-if)#no shut
M2(config-if)#exit
Now Setting Up the Port-channel Interface.
M2(config)#interface port-channel 1
M2(config-if)#no shut
M2(config-if)#switchport mode access
M2(config-if)#exit
Now We have Set up the Port-channel interface its time to decide which 8 interfaces will be used and configure each interface speed and duplex.
M2(config)# interface range f0/1 – 8
M2(config-if-range)#speed 100
M2(config-if-range)#duplex full
M2(config-if-range)#switchport mode access
M2(config-if-range)#channel-group 1 mode on
M2(config-if-range)#no shut
Ok Now we have Set up Basic Etherchannel on Both Switches, if you issue a show interfaces port-channel 1 as i said before you should see the BW and realize Etherchannel is on, you should be able to ping M1 and M2 VLAN1 Interface IP so there is Com between them. Ok its the same when you use Gigabit Ethernet interfaces the difference is the Quantity of Interfaces you ll be able to use ( Up to 2gbps ). There are other Factors to consider like the operation Modes of etherchannel ( on,desirable,auto…..load balancing ),PaGP ( Port aggregation Protocol ),and whole lot Stuff but this Post is only mine and who knows maybe yours Quick Reference to Etherchannel basic Conf.
Every Futher Study ( Which i need to Forfill Totally cause it is a CCIE R&S Objective :d:d ) is on Cisco Web page, in this configuration Guide:http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/configuration/guide/swethchl.html.
