From: Herbert Maosa (asawilunda@googlemail.com)
Date: Sun Aug 12 2007 - 11:42:53 ART
To me it looks contradictory to set max-metric lsa on router that you want
to establish a virtual link. You are establishing a virtual link to use an
area as a transit area , yet max-metric lsa is used to make other routers in
the domain NOT not to use the router for any transit traffic ( in this case
infinitely since you have no conditions specified ).
Unless your scenario is specifically asking you to use this command I would
be looking for another solution to achieve the desired effect of the
scenario without using this command.
My 2 cents worth.
Herbert.
On 8/12/07, NITIN NITIN <ccie_study_123@yahoo.com> wrote:
>
> Hi all,
>
> I have a issue
>
> when i use max-metric lsa ---- VL to hub is not coming up
>
> Please advise on same...
> Below are show o/p
> if m missin more reqd. o/p please let me know
>
> Thanks in advance
>
> Regards
>
>
> NITIN NITIN <ccie_study_123@yahoo.com> wrote:
> Hey Rayan ,
>
>
> Thanks a lot ,, with ur help finaly got it resolved .....
>
>
> but I have issue in understanding this issue why so ?
>
>
> I did changed the cost of interfaces of R3 to cost 65535 ( MAX)
>
> still neighbourship comes up
>
> but only thing down is virtual-link to R1
>
> as soon I remove max-metric router lsa it comes up ( VL)
>
> 1) IS IT A BUG or
>
> 2) VL DOESNT WORK FOR 2 NEIGHBORS WITH " MAX-METRIC LSA "
>
> Rack1R3#show ip ospf virtual-links
> Virtual Link OSPF_VL1 to router 150.1.1.1 is down<<<<<<<<<<<
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 123, Cost of using 65535
> Transmit Delay is 1 sec, State DOWN,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Virtual Link OSPF_VL0 to router 150.1.2.2 is up<<<<<<<<<<<<<<<<<
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 123, via interface Serial2/0, Cost of using
> 65535<<<<<<<<<<<<<
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:01
> Rack1R3#sh ip ospf neighbor
> Neighbor ID Pri State Dead Time Address Interface
> 150.1.7.7 1 FULL/DR 00:00:38 152.1.37.7 FastEthernet0/0
> 150.1.1.1 0 FULL/DROTHER 00:01:52 152.1.123.1 Serial2/0
> 150.1.2.2 0 FULL/DROTHER 00:01:59 152.1.123.2 Serial2/0
> Rack1R3#sh ip os
> Rack1R3#sh ip ospf in
> Rack1R3#sh ip ospf interface br
> Rack1R3#sh ip ospf interface brief
> Interface PID Area IP Address/Mask Cost State Nbrs F/C
> Vl1 1 0 0.0.0.0/0 65535 DOWN 0/0
> Vl0 1 0 152.1.123.3/24 65535 P2P 0/0
> Tu3 1 3 0.0.0.0/0 11111 P2P 0/0
> Fa1/0 1 3 152.1.3.3/24 1 DR 0/0
> Fa0/0 1 37 152.1.37.3/24 65535 BDR 1/1
> Lo0 1 37 150.1.3.3/24 1 LOOP 0/0
> Se2/0 1 123 152.1.123.3/24 65535 DR 2/2
>
> Ryan wrote:
> I think the problem is with the 'max-metric router-lsa'. Look at the
> Virtual-link costs, there both 65535. Try changing the them to something
> lower. Maybe even use adjusting the link cost instead of the using the
> max-metric to get the traffic to go around R1
>
>
> -Ryan
>
>
>
> On 8/11/07, NITIN NITIN wrote: Hi ,
> I'm not able to get this why this virtual link not coming up , this is the
> 2nd day i'm putting on this and my exam is near....
>
> max-metric lsa is because there is a requirement that to transit R1 only
> if R2 is down ....
>
>
> R3 -----------
>
> Rack1R3#sh ip ospf nei
> Rack1R3#sh ip ospf neighbor
> Neighbor ID Pri State Dead Time Address Interface
> 150.1.2.2 0 FULL/ - - 152.1.123.2 OSPF_VL7
> 150.1.7.7 1 FULL/DR 00:00:37 152.1.37.7 FastEthernet0/0
> 150.1.1.1 0 FULL/DROTHER 00:01:45 152.1.123.1 Serial2/0
> 150.1.2.2 0 FULL/DROTHER 00:01:45 152.1.123.2 Serial2/0
> Rack1R3#sh ip os
> Rack1R3#sh ip ospf in
> Rack1R3#sh ip ospf interface
> OSPF_VL7 is up, line protocol is up
> Internet Address 152.1.123.3/24, Area 0
> Process ID 1, Router ID 150.1.3.3, Network Type VIRTUAL_LINK, Cost: 64
> Configured as demand circuit.
> Run as demand circuit.
> DoNotAge LSA allowed.
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:04
> Index 2/2, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 1, maximum is 2
> Last flood scan time is 0 msec, maximum is 0 msec
> Neighbor Count is 1, Adjacent neighbor count is 1
> Adjacent with neighbor 150.1.2.2 (Hello suppressed)
> Suppress hello for 1 neighbor(s)
> OSPF_VL6 is down, line protocol is down
> Internet Address 0.0.0.0/0, Area 0
> Process ID 1, Router ID 150.1.3.3, Network Type VIRTUAL_LINK, Cost: 65535
> Configured as demand circuit.
> Run as demand circuit.
> DoNotAge LSA allowed.
> Transmit Delay is 1 sec, State DOWN,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Tunnel3 is up, line protocol is up
> Internet Address 0.0.0.0/0, Area 3
> Process ID 1, Router ID 150.1.3.3, Network Type POINT_TO_POINT, Cost:
> 11111
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> No Hellos (Passive interface)
> Index 2/5, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 0, maximum is 0
> Last flood scan time is 0 msec, maximum is 0 msec
> Neighbor Count is 0, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
> FastEthernet1/0 is up, line protocol is up
> Internet Address 152.1.3.3/24, Area 3
> Process ID 1, Router ID 150.1.3.3, Network Type NON_BROADCAST, Cost: 1
> Transmit Delay is 1 sec, State DR, Priority 1
> Designated Router (ID) 150.1.3.3, Interface address 152.1.3.3
> No backup designated router on this network
> Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
> oob-resync timeout 120
> Hello due in 00:00:22
> Index 1/4, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 0, maximum is 0
> Last flood scan time is 0 msec, maximum is 0 msec
> Neighbor Count is 0, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
> FastEthernet0/0 is up, line protocol is up
> Internet Address 152.1.37.3/24, Area 37
> Process ID 1, Router ID 150.1.3.3, Network Type BROADCAST, Cost: 1
> Transmit Delay is 1 sec, State BDR, Priority 1
> Designated Router (ID) 150.1.7.7, Interface address 152.1.37.7
> Backup Designated router (ID) 150.1.3.3, Interface address 152.1.37.3
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:02
> Index 2/6, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 1, maximum is 6
> Last flood scan time is 0 msec, maximum is 4 msec
> Neighbor Count is 1, Adjacent neighbor count is 1
> Adjacent with neighbor 150.1.7.7 (Designated Router)
> Suppress hello for 0 neighbor(s)
> Loopback0 is up, line protocol is up
> Internet Address 150.1.3.3/24, Area 37
> Process ID 1, Router ID 150.1.3.3, Network Type LOOPBACK, Cost: 1
> Loopback interface is treated as a stub Host
> Serial2/0 is up, line protocol is up
> Internet Address 152.1.123.3/24, Area 123
> Process ID 1, Router ID 150.1.3.3, Network Type BROADCAST, Cost: 64
> Transmit Delay is 1 sec, State DR, Priority 1
> Designated Router (ID) 150.1.3.3, Interface address 152.1.123.3
> No backup designated router on this network
> Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
> oob-resync timeout 120
> Hello due in 00:00:07
> Index 1/7, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 2, maximum is 18
> Last flood scan time is 4 msec, maximum is 4 msec
> Neighbor Count is 2, Adjacent neighbor count is 2
> Adjacent with neighbor 150.1.1.1
> Adjacent with neighbor 150.1.2.2
> Suppress hello for 0 neighbor(s)
>
>
>
> R1 -
>
> Rack1R1#sh ip ospf neighbor
> Neighbor ID Pri State Dead Time Address Interface
> 150.1.2.2 1 FULL/DR 00:00:34 152.1.125.2 FastEthernet0/0
> 150.1.5.5 0 2WAY/DROTHER 00:00:37 152.1.125.5 FastEthernet0/0
> 150.1.3.3 1 FULL/DR 00:01:57 152.1.123.3 Serial2/0
> Rack1R1#sh ip os
> Rack1R1#sh ip ospf int
> Rack1R1#sh ip ospf interface
> FastEthernet0/0 is up, line protocol is up
> Internet Address 152.1.125.1/24, Area 0
> Process ID 1, Router ID 150.1.1.1, Network Type BROADCAST, Cost: 1
> Transmit Delay is 1 sec, State DROTHER, Priority 0
> Designated Router (ID) 150.1.2.2, Interface address 152.1.125.2
> No backup designated router on this network
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:09
> Index 2/4, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 1, maximum is 8
> Last flood scan time is 0 msec, maximum is 4 msec
> Neighbor Count is 2, Adjacent neighbor count is 1
> Adjacent with neighbor 150.1.2.2 (Designated Router)
> Suppress hello for 0 neighbor(s)
> Message digest authentication enabled
> Youngest key id is 1
> OSPF_VL2 is up, line protocol is up
> Internet Address 152.1.123.1/24, Area 0
> Process ID 1, Router ID 150.1.1.1, Network Type VIRTUAL_LINK, Cost: 65535
> Configured as demand circuit.
> Run as demand circuit.
> DoNotAge LSA allowed.
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> oob-resync timeout 40
> Hello due in 00:00:04
> Index 1/1, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 0, maximum is 0
> Last flood scan time is 0 msec, maximum is 0 msec
> Neighbor Count is 0, Adjacent neighbor count is 0
> Suppress hello for 0 neighbor(s)
> Serial2/0 is up, line protocol is up
> Internet Address 152.1.123.1/24, Area 123
> Process ID 1, Router ID 150.1.1.1, Network Type NON_BROADCAST, Cost: 64
> Transmit Delay is 1 sec, State DROTHER, Priority 0
> Designated Router (ID) 150.1.3.3, Interface address 152.1.123.3
> No backup designated router on this network
> Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
> oob-resync timeout 120
> Hello due in 00:00:21
> Index 2/3, flood queue length 0
> Next 0x0(0)/0x0(0)
> Last flood scan length is 4, maximum is 4
> Last flood scan time is 0 msec, maximum is 4 msec
> Neighbor Count is 1, Adjacent neighbor count is 1
> Adjacent with neighbor 150.1.3.3 (Designated Router)
> Suppress hello for 0 neighbor(s)
> Loopback0 is up, line protocol is up
> Internet Address 150.1.1.1/24, Area 123
> Process ID 1, Router ID 150.1.1.1, Network Type LOOPBACK, Cost: 1
> Loopback interface is treated as a stub Host
>
>
> hostname Rack1R1
> !
> boot-start-marker
> boot-end-marker
> !
> enable password cisco
> !
> no aaa new-model
> ip subnet-zero
> !
> !
> no ip domain lookup
> !
> ip cef
> ipv6 unicast-routing
> ipv6 cef
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> interface Loopback0
> ip address 150.1.1.1 255.255.255.0
> ipv6 address 2001:150:1:1::1/64
> ipv6 rip RIPng enable
> !
> interface FastEthernet0/0
> ip address 152.1.125.1 255.255.255.0
> ip helper-address 152.1.123.3
> ip ospf authentication message-digest
> ip ospf message-digest-key 1 md5 CISCO
> ip ospf priority 0
> duplex full
> ipv6 address 2001:152:1:125::/64 eui-64
> ipv6 verify unicast reverse-path
> standby 1 name j
> glbp 1 ip 152.1.125.100
> glbp 1 weighting 7
> glbp 1 load-balancing weighted
> !
> interface FastEthernet1/0
> no ip address
> shutdown
> duplex auto
> speed auto
> !
> interface FastEthernet1/1
> no ip address
> shutdown
> duplex auto
> speed auto
> !
> interface Serial2/0
> ip address 152.1.123.1 255.255.255.0
> encapsulation frame-relay
> ip ospf priority 0
> ipv6 address 2001:152:1:123::1/64
> ipv6 address FE80::1 link-local
> ipv6 rip RIPng enable
> serial restart-delay 0
> no fair-queue
> frame-relay traffic-shaping
> frame-relay map ipv6 FE80::2 103
> frame-relay map ipv6 FE80::3 103
> frame-relay map ipv6 2001:152:1:123::2 103
> frame-relay map ipv6 2001:152:1:123::3 103 broadcast
> frame-relay interface-dlci 103
> class R1
> !
> interface Serial2/0.1 multipoint
> frame-relay interface-dlci 102
> frame-relay interface-dlci 104
> frame-relay interface-dlci 105
> frame-relay interface-dlci 113
> !
> interface Serial2/1
> no ip address
> shutdown
> serial restart-delay 0
> !
> interface Serial2/2
> no ip address
> shutdown
> serial restart-delay 0
> !
> interface Serial2/3
> no ip address
> shutdown
> serial restart-delay 0
> !
> router ospf 1
> router-id 150.1.1.1
> max-metric router-lsa
> log-adjacency-changes
> area 123 virtual-link 150.1.3.3
> network 150.1.1.1 0.0.0.0 area 123
> network 152.1.123.1 0.0.0.0 area 123
> network 152.1.125.1 0.0.0.0 area 0
> distribute-list 1 in Serial2/0
> !
> router bgp 1000
> no synchronization
> bgp router-id 150.1.1.1
> bgp log-neighbor-changes
> bgp confederation identifier 200
> bgp confederation peers 3000
> neighbor 152.1.123.3 remote-as 3000
> neighbor 152.1.125.5 remote-as 100
> no auto-summary
> !
> ip classless
> no ip http server
> !
> !
> !
> map-class frame-relay R1
> frame-relay cir 896000
> frame-relay bc 28672
> access-list 1 deny 150.1.2.2
> access-list 1 permit any
> ipv6 router rip RIPng
> redistribute connected route-map k
> !
> !
> route-map k permit 10
> match interface FastEthernet0/0
> !
> !
> !
> !
> !
> !
> !
> gatekeeper
> shutdown
> !
> !
> line con 0
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> stopbits 1
> line aux 0
> exec-timeout 0 0
> privilege level 15
> stopbits 1
> line vty 0 4
> password cisco
> login
> !
> !
> end
>
>
>
>
>
>
>
>
>
> Ryan wrote:
> Why do you have 'max-metric router-lsa' configured on R1?
>
> Can you post the configs for all of R1 as well?
>
> plus 'sh ip ospf nei' and 'sh ip ospf inter' for both R1 and R3
>
>
> -Ryan
>
>
>
>
>
>
> On 8/11/07, NITIN NITIN wrote: HI ,
>
> My mistake
>
>
> correct config
>
> pasted wrong config
>
>
> R3
>
> router ospf 1
> router-id 150.1.3.3
> log-adjacency-changes
> area 123 virtual-link 150.1.1.1 authentication message-digest
> area 123 virtual-link 150.1.1.1 message-digest-key 1 md5 CISCO
> area 123 virtual-link 150.1.2.2 authentication message-digest
> area 123 virtual-link 150.1.2.2 message-digest-key 1 md5 CISCO
> passive-interface Tunnel3
> network 150.1.3.3 0.0.0.0 area 37
> network 152.1.3.3 0.0.0.0 area 3
> network 152.1.37.3 0.0.0.0 area 37
> network 152.1.123.3 0.0.0.0 area 123
> distance 255 150.1.5.5 0.0.0.0 89
>
>
>
>
> Herbert Maosa wrote:
> Why is R3 building its virtual link to 150.1.3.3 ? Isn't this R3's own
> Router ID. Looking at your config below, I would expect R3 to have two
> virtual links, one to 150.1.1.1 and the other to 150.1.2.2 ?
>
> Herbert
>
> On 8/11/07, NITIN NITIN wrote: Hi EXPERTS,
>
> Sorry to bother again, but hope u understand exam is near
>
> Issue I'm facing now is ----
> R1 and R2 are spokes and R3 is hub
>
> R3 virtual link is not coming up after router rebbot with R1 , it was up
> eralier
>
>
> WITH R2 ---- VL of R3 is up
>
>
> R3-------------
>
> interface Serial2/0
> ip address 152.1.123.1 255.255.255.0
> encapsulation frame-relay
> ip ospf priority 0
> ipv6 address 2001:152:1:123::1/64
> ipv6 address FE80::1 link-local
> ipv6 rip RIPng enable
> serial restart-delay 0
> no fair-queue
> frame-relay traffic-shaping
> frame-relay map ipv6 FE80::2 103
> frame-relay map ipv6 FE80::3 103
> frame-relay map ipv6 2001:152:1:123::2 103
> frame-relay map ipv6 2001:152:1:123::3 103 broadcast
> frame-relay interface-dlci 103
> class R1
>
>
> router ospf 1
> router-id 150.1.1.1
> max-metric router-lsa
> log-adjacency-changes
> area 123 virtual-link 150.1.3.3 authentication message-digest
> area 123 virtual-link 150.1.3.3 message-digest-key 1 md5 CISCO
> network 150.1.1.1 0.0.0.0 area 123
> network 152.1.123.1 0.0.0.0 area 123
> network 152.1.125.1 0.0.0.0 area 0
> distribute-list 1 in Serial2/0
>
>
>
> R2-----
>
>
>
> router ospf 1
> router-id 150.1.2.2
> log-adjacency-changes
> area 123 virtual-link 150.1.3.3 authentication message-digest
> area 123 virtual-link 150.1.3.3 message-digest-key 1 md5 CISCO
> network 150.1.2.2 0.0.0.0 area 123
> network 152.1.123.2 0.0.0.0 area 123
> network 152.1.125.2 0.0.0.0 area 0
> default-information originate always
> distribute-list 1 in Serial2/0
> !
>
>
>
> R1----
>
>
> router ospf 1
> router-id 150.1.1.1
> max-metric router-lsa
> log-adjacency-changes
> area 123 virtual-link 150.1.3.3 authentication message-digest
> area 123 virtual-link 150.1.3.3 message-digest-key 1 md5 CISCO
> network 150.1.1.1 0.0.0.0 area 123
> network 152.1.123.1 0.0.0.0 area 123
> network 152.1.125.1 0.0.0.0 area 0
> distribute-list 1 in Serial2/0
>
>
>
> ISSUE
>
>
> Rack1R3# sh ip ospf virtual-links
> Virtual Link OSPF_VL7 to router 150.1.2.2 is up
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 123, via interface Serial2/0, Cost of using 64
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:08
> Adjacency State FULL (Hello suppressed)
> Index 1/4, retransmission queue length 0, number of retransmission 0
> First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
> Last retransmission scan length is 0, maximum is 0
> Last retransmission scan time is 0 msec, maximum is 0 msec
> Virtual Link OSPF_VL6 to router 150.1.1.1 is down
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 123, Cost of using 65535
> Transmit Delay is 1 sec, State DOWN,
> Timer intervals configured, Hello 10, Dead 40, Wa
>
>
>
> Rack1R1#sh ip ospf virtual-links
> Virtual Link OSPF_VL2 to router 150.1.3.3 is up
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 123, via interface Serial2/0, Cost of using 65535
> Transmit Delay is 1 sec, State POINT_TO_POINT,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> Hello due in 00:00:04
>
>
>
>
>
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>
>
>
> --
> Kindest regards,
> hm
>
>
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-- Kindest regards, hm
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