From: James Chen (jr_chen@xxxxxxxxxxxxxxx)
Date: Mon Dec 04 2000 - 04:10:50 GMT-3
Ya ! I should not use "no peer neighbor-route", and try to block the some route
s redistribute from RIP into OSPF . However,
which routes ?
I try to deny the routes which is connected in R5 will be advertised by RIP and
be redistributed into OSPF, which should not
belong to RIP domain. So that this routes
137.1.35.0 137.1.65.0 137.1.5.5 will not be redistributed into RIP.
Especially the host-route 137.1.35.1/32(generated when ISDN pick up) will not b
e
redistributed into OSPF domain, so that LSA will not be generate to flood on th
e ISDN.
Thanks for Tony's answer !
But should I block the routes which is redistributed into RIP and then redistri
buted back into OSPF ?
My lab show me that there are no any OSPF redistributed into RIP, since RIP is
classful
protocol, even I use RIP2, I don't see any routes in my RIP router (connected t
o R5 by S0/0) , so that I have to use
"default-information originate in R5" to generate a default-route to R1 to achi
ve the FULLY CONNECTIVITY.
Sir, do you think what I do is correct or not ?
Hope your anser !Thanks !
James
zheng jiang gu wrote:
> I agree with tony! but Tony ,if the problem exist ,it should always hold up t
he isdn ,
> not as James said.
> ----- Original Message -----
> From: Tony Olzak <aolzak@buckeye-express.com>
> To: James Chen <jr_chen@ringline.com.tw>; CCIE Group Study (E-mail) <ccielab@
groupstudy.com>; 林金生 <thomas@lantel.com.tw>
> Sent: Monday, December 04, 2000 12:33 AM
> Subject: Re: [A]OSPf Demand-Circuit over ISDN DDR
>
> When you redistribute RIP into OSPF, use a route map to keep the OSPF routes
> from coming back into OSPF. That will fix your problem WITHOUT using "no
> peer"
>
> Tony
>
> ----- Original Message -----
> From: "James Chen" <jr_chen@ringline.com.tw>
> To: "CCIE Group Study (E-mail)" <ccielab@groupstudy.com>; "林金生"
> <thomas@lantel.com.tw>
> Sent: Sunday, December 03, 2000 3:06 AM
> Subject: [A]OSPf Demand-Circuit over ISDN DDR
>
> > Hello, everybody:
> >
> > Finally, I got the config to work perfectly I think.
> > The scenario is R5 connect to R3 with ISDN, and only R5 will initial the
> > call to R3.
> > Configuration is so simple, my friend who is CCIE tell me that make it
> > simple,
> > don't think and do it too complex.
> > Do I decide to do it from isdn bri call setup and then add neighbor
> > relation and demand
> > circuit , finally to do the backbone configuartion, instead that config
> > backbone and then
> > backup by isdn .
> >
> > 1. I config ip , ppp, auth, dialer map, dialer-group, ping each other,
> > it's ok.
> > 2. add router ospf , put network, add ip ospf demand-circuit , watch the
> > neighbor
> > relation become " FULL/- ", and the dead time become " -" at last.
> > And after the idle-timeout , the isdn disconnectted. Ya ! it's ok.
> > 3.add all configuration of other backbone , it's still work properly.
> > 4.save config and reload all routers, ya ! isdn will be disconnectted
> > after idle-timeout.
> > 5.check if the backup is ok, shutdown the fa0/0 in R3 or R5, ya ! it
> > seems to be work.
> > 6.After the idle-timeout, the isdn drop . however, one LSA generate and
> > trigger the isdn
> > up again, after 120s idle-timeout, isdn disconnected and pick up
> > again and again.
> >
> > At first, I doublt that maybe I should use dialer interface to try it .
> > Ya, it work properly, but has the same condition as above.
> > I read the groupstudy email list , it said that use "no peer
> > neighbor-route".
> > But why should the peer neighbor-route be add ?
> >
> > I use debug ip ospf lsa-generation to watch what LSA is be generatted !
> > Yeh, there is an OSPF external Type 5 route be generatted when the isdn
> > grop.
> > I think this is because the rip will advertise the bri network into
> > OSPF.
> > The route entry that RIP inject is exactly the host-route 137.1.35.2/32,
> >
> > so if I use "no peer neighbor-route" , it will not generate the route "
> > 137.1.35.2/32 "
> > and will not be the entry of RIP. So that when the isdn drop, the RIP
> > will not
> > adverise the entry into OSPF, so that " THE NETWORK TOPOLOGY WILL NOT
> > BE CHANGED", the isdn will not be trigger up.
> >
> > If any other method can make the same function of "no peer
> > neighbor-route",
> > please let me know, thanks !
> >
> > I begin to believe that all the solution of CCIE Lab should be nature
> > and simple.
> > Don't think too much, right ?
> >
> > James
> >
> > The exactly config I have is as following:
> > --------------------------------------------------------------------------
> --------------
> >
> > Dialer Profile
> > ----------------
> > [R3]
> > hostname R3
> > !
> > enable password cisco
> > !
> > username R5 password 0 cisco
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > isdn switch-type basic-5ess
> > !
> > interface Loopback0
> > ip address 137.1.3.3 255.255.255.0
> > no ip directed-broadcast
> > !
> > interface FastEthernet0/0
> > ip address 137.1.63.3 255.255.255.0
> > no ip directed-broadcast
> > duplex auto
> > speed auto
> > !
> > interface Serial0/0
> > ip address 137.1.254.3 255.255.255.248
> > no ip directed-broadcast
> > encapsulation frame-relay
> > ip ospf network point-to-multipoint
> > no ip mroute-cache
> > no fair-queue
> > frame-relay map ip 137.1.254.2 101 broadcast
> > frame-relay map ip 137.1.254.4 100 broadcast
> > frame-relay lmi-type ansi
> > !
> > interface BRI0/0
> > no ip address
> > no ip directed-broadcast
> > encapsulation ppp
> > dialer pool-member 1
> > isdn switch-type basic-5ess
> > ppp authentication pap
> > ppp pap sent-username R3 password 7 1414110209
> > !
> > interface Dialer1
> > ip address 137.1.35.1 255.255.255.252
> > no ip directed-broadcast
> > encapsulation ppp
> > dialer remote-name R5
> > dialer pool 1
> > dialer-group 1
> > !
> > router ospf 1
> > network 137.1.3.3 0.0.0.0 area 3
> > network 137.1.35.1 0.0.0.0 area 3
> > network 137.1.63.3 0.0.0.0 area 3
> > network 137.1.254.3 0.0.0.0 area 0
> > !
> > ip classless
> > !
> > access-list 100 permit ip host 137.1.35.1 any log
> > dialer-list 1 protocol ip permit
> > =======================================
> > [R5]
> > hostname R5
> > !
> > enable password cisco
> > !
> > username R3 password 0 ccie
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > isdn switch-type basic-5ess
> > !
> > interface Loopback0
> > ip address 137.1.5.5 255.255.255.0
> > no ip directed-broadcast
> > !
> > interface FastEthernet0/0
> > ip address 137.1.65.5 255.255.255.0
> > no ip directed-broadcast
> > duplex auto
> > speed auto
> > !
> > interface Serial0/0
> > ip address 137.1.15.5 255.255.255.0
> > no ip directed-broadcast
> > ip rip send version 2
> > no ip mroute-cache
> > clockrate 2000000
> > !
> > interface BRI0/0
> > no ip address
> > no ip directed-broadcast
> > encapsulation ppp
> > dialer pool-member 1
> > isdn switch-type basic-5ess
> > ppp authentication pap
> > ppp pap sent-username R5 password 7 060506324F41
> > !
> > interface FastEthernet0/1
> > no ip address
> > no ip directed-broadcast
> > shutdown
> > duplex auto
> > speed auto
> > !
> > interface Dialer1
> > ip address 137.1.35.2 255.255.255.252
> > no ip directed-broadcast
> > encapsulation ppp
> > ip ospf demand-circuit
> > dialer remote-name R3
> > dialer pool 1
> > dialer string 8358661
> > dialer-group 1
> > no peer neighbor-route
> > !
> > router ospf 1
> > redistribute rip metric 1000 subnets
> > network 137.1.5.5 0.0.0.0 area 3
> > network 137.1.35.2 0.0.0.0 area 3
> > network 137.1.65.5 0.0.0.0 area 3
> > !
> > router rip
> > redistribute ospf 1
> > passive-interface FastEthernet0/0
> > passive-interface Dialer1
> > network 137.1.0.0
> > default-information originate
> > !
> > ip classless
> > !
> > access-list 100 permit ip host 137.1.35.2 any log
> > dialer-list 1 protocol ip permit
> > ---------------------------------------------------------------
> > legacy DDR
> > --------------
> > [R3]
> > hostname R3
> > !
> > enable password cisco
> > !
> > username R5 password 0 cisco
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > isdn switch-type basic-5ess
> > !
> > interface Loopback0
> > ip address 137.1.3.3 255.255.255.0
> > no ip directed-broadcast
> > !
> > interface FastEthernet0/0
> > ip address 137.1.63.3 255.255.255.0
> > no ip directed-broadcast
> > duplex auto
> > speed auto
> > !
> > interface Serial0/0
> > ip address 137.1.254.3 255.255.255.248
> > no ip directed-broadcast
> > encapsulation frame-relay
> > ip ospf network point-to-multipoint
> > no ip mroute-cache
> > no fair-queue
> > frame-relay map ip 137.1.254.2 101 broadcast
> > frame-relay map ip 137.1.254.4 100 broadcast
> > frame-relay lmi-type ansi
> > !
> > interface BRI0/0
> > ip address 137.1.35.1 255.255.255.252
> > no ip directed-broadcast
> > encapsulation ppp
> > dialer map ip 137.1.35.2 name R5 broadcast
> > dialer-group 1
> > isdn switch-type basic-5ess
> > ppp authentication pap
> > ppp pap sent-username R3 password 7 1414110209
> > !
> > router ospf 1
> > network 137.1.3.3 0.0.0.0 area 3
> > network 137.1.35.1 0.0.0.0 area 3
> > network 137.1.63.3 0.0.0.0 area 3
> > network 137.1.254.3 0.0.0.0 area 0
> > !
> > ip classless
> > !
> > access-list 100 permit ip host 137.1.35.1 any log
> > dialer-list 1 protocol ip permit
> > [R5]
> > hostname R5
> > !
> > logging buffered 40960 debugging
> > enable password cisco
> > !
> > username R3 password 0 ccie
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > isdn switch-type basic-5ess
> > !
> > interface Loopback0
> > ip address 137.1.5.5 255.255.255.0
> > no ip directed-broadcast
> > !
> > interface FastEthernet0/0
> > ip address 137.1.65.5 255.255.255.0
> > no ip directed-broadcast
> > duplex auto
> > speed auto
> > !
> > interface Serial0/0
> > ip address 137.1.15.5 255.255.255.0
> > no ip directed-broadcast
> > ip rip send version 2
> > no ip mroute-cache
> > clockrate 2000000
> > !
> > interface BRI0/0
> > ip address 137.1.35.2 255.255.255.252
> > no ip directed-broadcast
> > encapsulation ppp
> > ip ospf demand-circuit
> > dialer map ip 137.1.35.1 name R3 broadcast 8358661
> > dialer-group 1
> > isdn switch-type basic-5ess
> > no peer neighbor-route
> > ppp authentication pap
> > ppp pap sent-username R5 password 7 060506324F41
> > !
> > router ospf 1
> > redistribute rip subnets
> > network 137.1.5.5 0.0.0.0 area 3
> > network 137.1.35.2 0.0.0.0 area 3
> > network 137.1.65.5 0.0.0.0 area 3
> > !
> > router rip
> > redistribute ospf 1
> > passive-interface FastEthernet0/0
> > passive-interface BRI0/0
> > network 137.1.0.0
> > default-information originate
> > !
> > ip classless
> > !
> > access-list 100 permit ip host 137.1.35.2 any log
> > dialer-list 1 protocol ip permit
> >
> >
>
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