From: Pierre-Alex (paguanel@hotmail.com)
Date: Tue Jun 13 2006 - 12:03:08 ART
Hi Arun
Here is the topology:
BB1-----frame-relay ipv6------R3--serial----ipv6----R5-ethernet--ipv6--BB2
RIPng is running on all interfaces
The purpose it to to have BB2 learn the routes announced by BB1
I could loop the Ethernet on R5 back to BB1 but since I cannot have two rip
processes on BB1, I will not be able
to get the routes in the routing table. I have not tried it out because
logically I know it will not work.
The only thing I could have to verify is a debug to see the routes bouncing
back via the Ethernet cable ...
Maybe you have a better idea ...
Thanks and Regards,
Pierre-Alex
----- Original Message -----
From: "Arun Arumuganainar" <aarumuga@hotmail.com>
To: "Pierre-Alex" <paguanel@hotmail.com>; "Petr Lapukhov"
<petrsoft@gmail.com>
Sent: Tuesday, June 13, 2006 4:05 PM
Subject: Re: Minimum Number of Routers required for Practice Labs
> Could you pls. let me know what you wanted to achive ...
>
> Have you tried any solution using route filtering work + PBR... If so did
> that work !!!
>
> Pls. share with me what is the problem and how you tried to addresses it.
> FYI : I am not expert in IPv6 but still I can try to find out a solution
> that will workable on you low end routers .
>
> Thanks and Regards
> Arun
> ----- Original Message -----
> From: "Pierre-Alex" <paguanel@hotmail.com>
> To: "Arun Arumuganainar" <aarumuga@hotmail.com>; "Petr Lapukhov"
> <petrsoft@gmail.com>
> Sent: Tuesday, June 13, 2006 5:33 PM
> Subject: Re: Minimum Number of Routers required for Practice Labs
>
>
>> Thanks for your inputs
>>
>> Unfortunately your solutions do not seem to allow me to accomplish this
>> as
>> my
>>
>> need is to run multiple instances of rip/ospf with ipv6 on the same
>> router.
>>
>> Meanwhile I have searched around and found that vrf and ipv6 are
>> available
>> in
>>
>> Cisco IOS XR Software but apparently you need a Cisco 12000 router to run
>> it.
>>
>> I think it may be cheaper to buy two extra backbone routers. :))
>>
>>
>> Pierre-Alex
>>
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "Arun Arumuganainar" <aarumuga@hotmail.com>
>> To: <paguanel@hotmail.com>
>> Sent: Tuesday, June 13, 2006 8:30 AM
>> Subject: Re: Minimum Number of Routers required for Practice Labs
>>
>>
>> > This mail was posted a year ago and exactly talks about your
>> > requirement
>
>> >
>> > But offcourse IPV6 is not supported on VRF interfaces .
>> >
>> > But still ipv6 you can do this way .
>> >
>> > 1) Use different routing protocols for different interfaces
>> > 2) advertise only specific ipv6 routes across these interfaces ( if
>> > needed
>> > you can use filtering )
>> > 3) If there is any routing problem or you wanted the traffic to go is
>> > particular fashion use PBR
>> >
>> > Thanks and Regards
>> > Arun
>> > ----- Original Message -----
>> > From: "Arun Arumuganainar" <aarumuga@hotmail.com>
>> > To: "Group Study" <ccielab@groupstudy.com>
>> > Sent: Wednesday, July 27, 2005 2:38 PM
>> > Subject: Re: Minimum Number of Routers required for Practice Labs
>> >
>> >
>> >> Mailing this for broader interest of the group . The techique can be
> used
>> > if
>> >> you run short of routers in your lab . With this technique you can
> create
>> > 2
>> >> or More routers with in a single physical routers . Using this
> technique
>> > you
>> >> can very effectively simulate all the back bone or stub routers in
>> >> your
>> >> setup with a single physical router with multiple interfaces .
>> >>
>> >> Creation Multiple routers using a single router ( For CCIE Practice
>> >> LAB
>> >> Purpose only ) :
>> >>
>> >> General recommendation : Use this For Back bone or STUB routers in
>> >> your
>> >> Topology .
>> >> e1/0 e1/0
>> >> Router1=============Router2
>> >> e0/0 e0/0
>> >>
>> >> Here Our topology will look like 2 routers connected back to back via
> two
>> >> link .
>> >>
>> >> Our Objective is two split the router1 in to two routers namely
>> >> routera
>> > and
>> >> routerb . When we are done, the topology will look like these .
>> >>
>> >> e0/0 e0/0 e1/0 e1/0
>> >> routera------router2-------routerb
>> >>
>> >>
>> >> Pls. note : Router A and Router B are actually logical routers created
>> > with
>> >> in router1.
>> >>
>> >> You can run same or different protocol on router A and Router B . In
> our
>> >> case I have used RIP between router A and Router 2 & OSPF between
>> >> Router
>> > 2
>> >> and Router B
>> >>
>> >> How to do it ?
>> >>
>> >> Step 1: Define a VRF and Apply it on interface :
>> >>
>> >> Note : IP Cef is pre-requisite . In case it is not enabled by default
>> > enable
>> >> them using " ip cef " command in the global prompt .
>> >>
>> >> Sample Config :
>> >>
>> >> For Router A
>> >>
>> >> !
>> >> ip vrf routera
>> >> rd 100:100
>> >> route-target export 100:100
>> >> route-target import 100:100
>> >> !
>> >> interface Loopback0
>> >> ip vrf forwarding routera
>> >> ip address 10.10.10.1 255.255.255.255
>> >> !
>> >> interface Ethernet0/0
>> >> ip vrf forwarding routera
>> >> ip address 192.168.1.1 255.255.255.0
>> >> !
>> >>
>> >> Note : While configuring VRF first apply vrf and then configure the
>> >> IP
>> >> address and not the other way around
>> >>
>> >> for Router B
>> >>
>> >>
>> >> ip vrf routerb
>> >> rd 200:300
>> >> route-target export 200:300
>> >> route-target import 200:300
>> >> !
>> >> !
>> >> interface Loopback1
>> >> ip vrf forwarding routerb
>> >> ip address 30.30.30.1 255.255.255.255
>> >> !
>> >> interface Ethernet1/0
>> >> ip vrf forwarding routerb
>> >> ip address 192.168.2.1 255.255.255.0
>> >>
>> >> Config Note :
>> >>
>> >> 1) RD is the identifier for Router A and Router B . Pls. give a unique
>> >> identifier .
>> >> 2) Ensure that import and export targets are not identical . This will
>> > lead
>> >> to route leaking which we want to avoid
>> >>
>> >> Best Practce : Give a unique ID for RD on each VRF and set the import
> and
>> >> export targets to RD .
>> >>
>> >> STEP 2 : Configure Routing protcols .
>> >>
>> >> Here I configured OSPF on RouterA---Router2 and RIP on
> ROUTER2---RouterB
>> >> link . I have also did mutual re-distribution between RIP and OSPF at
> R2
>> >>
>> >>
>> >> Sample Configs
>> >> COnfigs on Router 1
>> >>
>> >>
>> >> !OSPF COnfigs for Router A
>> >> !
>> >> router ospf 100 vrf routera
>> >> log-adjacency-changes
>> >> network 0.0.0.0 255.255.255.255 area 100
>> >> !
>> >> !RIP config for Router B
>> >> !
>> >> router rip
>> >> !
>> >> address-family ipv4 vrf routerb
>> >> network 30.0.0.0
>> >> network 192.168.2.0
>> >> no auto-summary
>> >> exit-address-family
>> >> !
>> >>
>> >>
>> >>
>> >> Configuration on Router 2
>> >>
>> >> Note : Mutual redistribution is enabled
>> >>
>> >> router ospf 100
>> >> log-adjacency-changes
>> >> redistribute rip metric 100 metric-type 1 subnets
>> >> network 20.20.20.0 0.0.0.255 area 100
>> >> network 192.168.1.0 0.0.0.255 area 100
>> >> !
>> >> router rip
>> >> redistribute ospf 100 metric 8
>> >> network 192.168.2.0
>> >> !
>> >>
>> >>
>> >> Verification .
>> >>
>> >>
>> >> Routing Table for Routera ( you have to virew this on Route1 )
>> >>
>> >>
>> >> Router#sh ip route vrf routera
>> >> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
>> >> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
>> >> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
>> >> E1 - OSPF external type 1, E2 - OSPF external type 2
>> >> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
>> >> inter
>> >> area
>> >> * - candidate default, U - per-user static route, o - ODR
>> >> P - periodic downloaded static route
>> >>
>> >> Gateway of last resort is not set
>> >>
>> >> 20.0.0.0/32 is subnetted, 1 subnets
>> >> O 20.20.20.1 [110/11] via 192.168.1.2, 00:02:21, Ethernet0/0
>> >> 10.0.0.0/32 is subnetted, 1 subnets
>> >> C 10.10.10.1 is directly connected, Loopback0
>> >> C 192.168.1.0/24 is directly connected, Ethernet0/0
>> >> O E1 192.168.2.0/24 [110/110] via 192.168.1.2, 00:02:21, Ethernet0/0
>> >> O E1 30.0.0.0/8 [110/110] via 192.168.1.2, 00:02:21, Ethernet0/0
>> >>
>> >>
>> >> Routing Table for Routera ( you have to virew this on Route1 )
>> >>
>> >> Router#sh ip route vrf routerb
>> >> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
>> >> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
>> >> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
>> >> E1 - OSPF external type 1, E2 - OSPF external type 2
>> >> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
>> >> inter
>> >> area
>> >> * - candidate default, U - per-user static route, o - ODR
>> >> P - periodic downloaded static route
>> >>
>> >> Gateway of last resort is not set
>> >>
>> >> R 20.0.0.0/8 [120/8] via 192.168.2.2, 00:00:01, Ethernet1/0
>> >> R 10.0.0.0/8 [120/8] via 192.168.2.2, 00:00:01, Ethernet1/0
>> >> R 192.168.1.0/24 [120/8] via 192.168.2.2, 00:00:01, Ethernet1/0
>> >> C 192.168.2.0/24 is directly connected, Ethernet1/0
>> >> 30.0.0.0/32 is subnetted, 1 subnets
>> >> C 30.30.30.1 is directly connected, Loopback1
>> >>
>> >>
>> >> Ping Test : Ping from routera to routerb
>> >>
>> >> Router#
>> >>
>> >> Router#ping vrf routera 30.30.30.1
>> >>
>> >> Type escape sequence to abort.
>> >> Sending 5, 100-byte ICMP Echos to 30.30.30.1, timeout is 2 seconds:
>> >> !!!!!
>> >> Success rate is 100 percent (5/5), round-trip min/avg/max = 40/60/100
> ms
>> >>
>> >> Trace Route from Router A to Router B ( goes via router2)
>> >>
>> >>
>> >> Router#trace vrf routera
>> >> Protocol [ip]:
>> >> Target IP address: 30.30.30.1
>> >> Source address:
>> >> Numeric display [n]:
>> >> Timeout in seconds [3]:
>> >> Probe count [3]:
>> >> Minimum Time to Live [1]:
>> >> Maximum Time to Live [30]:
>> >> Port Number [33434]:
>> >> Loose, Strict, Record, Timestamp, Verbose[none]:
>> >> Type escape sequence to abort.
>> >> Tracing the route to 30.30.30.1
>> >>
>> >> 1 192.168.1.2 40 msec 40 msec 40 msec
>> >> 2 192.168.2.1 60 msec 40 msec *
>> >>
>> >> ----- Original Message -----
>> >> From: "Arun Arumuganainar" <aarumuga@hotmail.com>
>> >> To: "Shanky" <shankyz@gmail.com>; "Group Study"
> <ccielab@groupstudy.com>
>> >> Sent: Saturday, July 23, 2005 9:06 PM
>> >> Subject: Re: Minimum Number of Routers required for Practice Labs
>> >>
>> >>
>> >> > Hi Shanky ,
>> >> >
>> >> > This is really tricky . Let me suggest few things that you may find
>> > useful
>> >>
>> >> >
>> >> > 1) FR switch can be used as a router too . You can use it as core
>> >> > router
>> >> or
>> >> > in the Back bone ...No harm ..FR Switching does not interfere with
>> >> > ip
>> >> > routing .
>> >> >
>> >> > 2) You can use Cat Switch as a router too ( may be a back bone
> router )
>> >
>> >> >
>> >> > 3) Still if your running out of routers . Try doing this . Enable
>> >> > VRF
>> >> > on
>> >> > interfaces and Runn routing protocol instances . For ex : If a
>> >> > router
>> > has
>> >> > for interfaces and your requirement is 2 routers having 2
>> >> > interfaces
>
>> >> >
>> >> > Then you can logically split the router in to two routers by
>> >> > configuring
>> >> VRF
>> >> > ( popularly used in MPLS VPN ) . You run different instances of
>> >> > protocol
>> >> on
>> >> > each VRF . Believe me ... You can combine all the back bone routers(
>> >> > for
>> >> ex:
>> >> > IP EXPERT Topology uses 3 Back bone routers ) in to one and runn 3
>> >> > different routing protocols ..as though u have 3 routers .!!!
>> >> >
>> >> > Thanks and Regards
>> >> > Arun
>> >> >
>> >> > ----- Original Message -----
>> >> > From: "Shanky" <shankyz@gmail.com>
>> >> > To: "Group Study" <ccielab@groupstudy.com>
>> >> > Sent: Saturday, July 23, 2005 5:17 PM
>> >> > Subject: Minimum Number of Routers required for Practice Labs
>> >> >
>> >> >
>> >> > > Hello everyone,
>> >> > > Can you guys let me know ..the absolute minimum routers needed
>> >> > > for
>> >> > > practice....
>> >> > > I believe most of the technologies can be practiced with 4-5
> routers
>> > so
>> >> > why
>> >> > > do all the vendors like IE,IP and NMC use so many routers in their
>> >> > > topologies ?
>> >> > > I think most of the workbooks are designed with topology
> containing
>> > 10+
>> >> > > routers .. does one really need such large number of routers ?
>> >> > > Can we not use the FR Switch (Cisco Router ) as backbone and and
>> > whats
>> >> > the
>> >> > > minimum number of routers one should go for ?
>> >> > > At the moment , I have started practice with my own ..designed
> small
>> >> > > topologies of 3-4 routers but I want to know if anyone is using
>> >> > > any
>> >> > standard
>> >> > > topology over which most of the IGPs & BGP can be practiced
>> >> > > without
>> >> making
>> >> > > Physical changes.
>> >> > > TIA
>> >> > > Shanky
>> >> > >
>> >> > >
>> > _______________________________________________________________________
>> >> > > Subscription information may be found at:
>> >> > > http://www.groupstudy.com/list/CCIELab.html
>> >> >
>> >> >
> _______________________________________________________________________
>> >> > Subscription information may be found at:
>> >> > http://www.groupstudy.com/list/CCIELab.html
>> >>
>> >> _______________________________________________________________________
>> >> Subscription information may be found at:
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