From: john matijevic (john.matijevic@gmail.com)
Date: Thu May 05 2005 - 12:09:51 GMT-3
Hello Sean,
In this case he is using a point-to-multpoint, the priority is what I was
referring to, is not needed in a point-to-multpoint network, so I was
curious as to why that was configured. Just trying to break down and
troubleshoot in logical steps. I apologize if I confused you with my
wording.
Sincerely,
John
On 5/5/05, Sean C <Upp_and_Upp@hotmail.com> wrote:
>
> John,
>
> You write: "Its only needed where when you trying to prevent the router
> from becoming a DR in a broadcast, non-broadcast or point-to-multipoint
> non-broadcast network type."
>
> Priority is required for:
> Broadcast
> Non-broadcast
> Both broadcast and non-broadcast hold DR/BDR elections. I do not believe
> Point-to-Multipoint on-broadcast holds a DR/BDR election.
>
> Coincidently, I've been looking for the last 30 mins on
cisco.com<http://cisco.com>and
> googled to find something that explicitly states this in easy language.
> Perhaps a chart like the one NMC uses to explain the OSPF network types. I
> haven't been able to an appropriate chart, description though.
> Sean
>
> ----- Original Message -----
> From: "john matijevic" <john.matijevic@gmail.com>
> To: "Kumar, Manoj" <manoj.kumar@citigroup.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Thursday, May 05, 2005 7:34 AM
> Subject: Re: OSPF
>
> > Hello Manoj,
> > First step would be to remove ip ospf priority 0 on R6 Serial interface,
> > this is not needed, because ospf is configured with a
> point-to-multipoint
> > network type. Its only needed where when you trying to prevent the
> router
> > from becoming a DR in a broadcast, non-broadcast or point-to-multipoint
> > non-broadcast network type. Also check your MTU settings to see if you
> > have
> > set the mtu on the interface. Also if you may want to remove ospf
> protocol
> > reload the router, and reenter the ospf configuration.
> > Sincerely,
> > John
> >
> >
>
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f0d
> .
> > shtml
> > On 5/5/05, Kumar, Manoj <manoj.kumar@citigroup.com> wrote:
> >>
> >> Gents,
> >>
> >> In my lab, I have a topology where R2 is the FR hub and R5, R6 form the
> >> spokes. I got to run OSPF and R2 and R5 form OSPF neighbors over FR
> with
> >> no
> >> issues, R6 is getting stuck at EXSTART with both R5 and R6 over FR. R6
> is
> >> forming OSPF with R5 over ETHERNET with no issues.
> >>
> >> I tried neighbor commands between R2 & R6, R5 & R6.
> >> I tried 'ip ospf network point-to-multipoint non-broadcast on all three
> >> routers' FR interfaces
> >>
> >> Please help and the config for R2 & R6 is given below.
> >>
> >> R2#sh running-config
> >> Building configuration...
> >>
> >> Current configuration : 2538 bytes
> >> !
> >> version 12.2
> >> service timestamps debug uptime
> >> service timestamps log uptime
> >> no service password-encryption
> >> !
> >> hostname R2
> >> !
> >> !
> >> ip subnet-zero
> >> !
> >> !
> >> !
> >> !
> >> call rsvp-sync
> >> !
> >> !
> >> !
> >> !
> >> !
> >> !
> >> !
> >> !
> >> interface Loopback0
> >> description *** LOOPBACK FOR R2 ***
> >> ip address 200.0.0.2 <http://200.0.0.2> <http://200.0.0.2>
> > 255.255.255.255 <http://255.255.255.255><http://255.255.255.255>
> >> !
> >> interface Loopback1
> >> ip address 172.16.0.1 <http://172.16.0.1> <http://172.16.0.1>
> 255.255.0.0 <http://255.255.0.0>
> >> <http://255.255.0.0>
> >> !
> >> interface FastEthernet0/0
> >> no ip address
> >> duplex auto
> >> speed auto
> >> !
> >> interface Serial0/0
> >> no ip address
> >> encapsulation frame-relay
> >> no fair-queue
> >> no arp frame-relay
> >> cdp enable
> >> no frame-relay inverse-arp
> >> frame-relay lmi-type cisco
> >> !
> >> interface Serial0/0.24 point-to-point
> >> ip address 150.50.24.2 <http://150.50.24.2> <http://150.50.24.2>
> > 255.255.255.0 <http://255.255.255.0><http://255.255.255.0>
> >> ip policy route-map greenandgold
> >> no arp frame-relay
> >> frame-relay interface-dlci 104
> >> !
> >> interface Serial0/0.256 multipoint
> >> ip address 150.50.100.2 <http://150.50.100.2> <http://150.50.100.2>
> > 255.255.255.224 <http://255.255.255.224><http://255.255.255.224>
> >> ip ospf network point-to-multipoint
> >> no arp frame-relay
> >> frame-relay map ip 150.50.100.2 <http://150.50.100.2> <
> http://150.50.100.2> 105
> >> frame-relay map ip 150.50.100.5 <http://150.50.100.5> <
> http://150.50.100.5> 105 broadcast
> >> frame-relay map ip 150.50.100.6 <http://150.50.100.6> <
> http://150.50.100.6> 106 broadcast
> >> no frame-relay inverse-arp
> >> !
> >> interface FastEthernet0/1
> >> description *** LAN CONN TO R1-FE0-0 ***
> >> ip address 150.50.17.2 <http://150.50.17.2> <http://150.50.17.2>
> > 255.255.255.0 <http://255.255.255.0><http://255.255.255.0>
> >> ip policy route-map greenandgold
> >> duplex auto
> >> speed auto
> >> !
> >> interface Serial0/1
> >> no ip address
> >> shutdown
> >> !
> >> router eigrp 1
> >> redistribute ospf 10 metric 100000 1 255 1 1
> >> network 150.50.24.0 <http://150.50.24.0> <http://150.50.24.0>
0.0.0.255<http://0.0.0.255><
> http://0.0.0.255>
> >> no auto-summary
> >> !
> >> router ospf 10
> >> log-adjacency-changes
> >> redistribute connected subnets route-map task10
> >> redistribute static subnets
> >> redistribute rip subnets
> >> passive-interface Serial0/0.24
> >> passive-interface FastEthernet0/1
> >> passive-interface Loopback0
> >> network 150.50.7.0 <http://150.50.7.0> <http://150.50.7.0>
0.0.0.127<http://0.0.0.127><
> http://0.0.0.127> area
> >> 1
> >> network 150.50.100.0 <http://150.50.100.0> <http://150.50.100.0>
> 0.0.0.31 <http://0.0.0.31> <http://0.0.0.31>
> >> area
> >> 0
> >> default-information originate always
> >> !
> >> router rip
> >> passive-interface Serial0/0.24
> >> passive-interface Serial0/0.256
> >> network 150.50.0.0 <http://150.50.0.0> <http://150.50.0.0>
> >> no auto-summary
> >> !
> >> ip classless
> >> ip default-network 172.16.0.0 <http://172.16.0.0> <http://172.16.0.0>
> >> ip route 200.0.0.1 <http://200.0.0.1> <http://200.0.0.1>
> > 255.255.255.255 <http://255.255.255.255><http://255.255.255.255>
> >> 150.50.17.1 <http://150.50.17.1> <http://150.50.17.1>
> >> ip http server
> >> !
> >> !
> >> map-class frame-relay R2_ts
> >> frame-relay adaptive-shaping becn
> >> frame-relay cir 64000
> >> frame-relay bc 8000
> >> frame-relay be 8000
> >> frame-relay mincir 32000
> >> access-list 100 permit icmp host 10.1.1.4 <http://10.1.1.4> <
> http://10.1.1.4>
> > 150.50.5.64 <http://150.50.5.64><http://150.50.5.64>
> >> 0.0.0.31 <http://0.0.0.31> <http://0.0.0.31>
> >> access-list 101 permit icmp host 150.50.200.1 <http://150.50.200.1> <
> http://150.50.200.1>
> >> 150.50.5.64 <http://150.50.5.64> <http://150.50.5.64>
0.0.0.31<http://0.0.0.31><
> http://0.0.0.31>
> >> route-map task10 permit 10
> >> match interface Loopback0 Loopback1
> >> !
> >> route-map greenandgold permit 10
> >> match ip address 100
> >> set ip next-hop 150.50.100.5 <http://150.50.100.5> <http://150.50.100.5
> >
> >> !
> >> route-map greenandgold permit 20
> >> match ip address 101
> >> set ip next-hop 150.50.100.6 <http://150.50.100.6> <http://150.50.100.6
> >
> >> !
> >> !
> >> dial-peer cor custom
> >> !
> >> !
> >> !
> >> !
> >> !
> >> line con 0
> >> line aux 0
> >> line vty 0 4
> >> login
> >> !
> >> end
> >>
> >> R6#sh running-config
> >> Building configuration...
> >>
> >> Current configuration : 1461 bytes
> >> !
> >> version 12.2
> >> service timestamps debug uptime
> >> service timestamps log uptime
> >> no service password-encryption
> >> !
> >> hostname R6
> >> !
> >> !
> >> ip subnet-zero
> >> !
> >> !
> >> !
> >> !
> >> call rsvp-sync
> >> !
> >> !
> >> !
> >> !
> >> !
> >> !
> >> !
> >> !
> >> interface Loopback0
> >> ip address 200.0.0.6 <http://200.0.0.6> <http://200.0.0.6>
> > 255.255.255.255 <http://255.255.255.255><http://255.255.255.255>
> >> !
> >> interface FastEthernet0/0
> >> description *** LAN CONN TO CAT3550-2-FE0-6 ***
> >> ip address 150.50.7.6 <http://150.50.7.6> <http://150.50.7.6>
> > 255.255.255.128 <http://255.255.255.128><http://255.255.255.128>
> >> ip ospf network point-to-multipoint
> >> delay 100000
> >> duplex auto
> >> speed auto
> >> !
> >> interface Serial0/0
> >> no ip address
> >> ip ospf priority 0
> >> shutdown
> >> !
> >> interface BRI0/0
> >> no ip address
> >> encapsulation hdlc
> >> shutdown
> >> !
> >> interface FastEthernet0/1
> >> no ip address
> >> shutdown
> >> duplex auto
> >> speed auto
> >> !
> >> interface Serial0/1
> >> no ip address
> >> ip ospf priority 0
> >> shutdown
> >> !
> >> interface Serial1/0
> >> bandwidth 1544
> >> ip address 150.50.100.6 <http://150.50.100.6> <http://150.50.100.6>
> > 255.255.255.224 <http://255.255.255.224><http://255.255.255.224>
> >> encapsulation frame-relay
> >> ip ospf network point-to-multipoint
> >> ip ospf priority 0
> >> no fair-queue
> >> no arp frame-relay
> >> frame-relay map ip 150.50.100.2 <http://150.50.100.2> <
> http://150.50.100.2> 601 broadcast
> >> frame-relay map ip 150.50.100.5 <http://150.50.100.5> <
> http://150.50.100.5> 605 broadcast
> >> frame-relay map ip 150.50.100.6 <http://150.50.100.6> <
> http://150.50.100.6> 601
> >> no frame-relay inverse-arp
> >> frame-relay lmi-type cisco
> >> !
> >> interface Serial1/1
> >> no ip address
> >> shutdown
> >> !
> >> interface Serial1/2
> >> no ip address
> >> shutdown
> >> !
> >> interface Serial1/3
> >> no ip address
> >> shutdown
> >> !
> >> router ospf 10
> >> log-adjacency-changes
> >> network 150.50.7.0 <http://150.50.7.0> <http://150.50.7.0>
0.0.0.127<http://0.0.0.127><
> http://0.0.0.127> area
> >> 1
> >> network 150.50.100.0 <http://150.50.100.0> <http://150.50.100.0>
> 0.0.0.31 <http://0.0.0.31> <http://0.0.0.31>
> >> area
> >> 0
> >> !
> >> ip classless
> >> ip http server
> >> !
> >> !
> >> dial-peer cor custom
> >> !
> >> !
> >> !
> >> !
> >> !
> >> line con 0
> >> line aux 0
> >> line vty 0 4
> >> login
> >> !
> >> end
> >>
> >> R6#
> >>
> >> Kind Regards,
> >>
> >> Manoj Ku
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >
> >
> >
> > --
> > John Matijevic, CCIE #13254
> > U.S. Installation Group
> > Senior Network Engineer
> > 954-969-7160 ext. 1147 (office)
> > 305-321-6232 (cell)
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
>
-- John Matijevic, CCIE #13254 U.S. Installation Group Senior Network Engineer 954-969-7160 ext. 1147 (office) 305-321-6232 (cell)
This archive was generated by hypermail 2.1.4 : Fri Jun 03 2005 - 10:11:56 GMT-3