Re: Multicast BGP - INE Vol1

Hi,

I don't have that lab workbook but was thinking that you could try
some debugging (debug ip mpacket) on R2. Also you might want to run
some more pings or multicast traffic since the ip mroute count is just
1.

-Rich

On Wed, Jul 22, 2009 at 4:43 PM, Vignesh
Sethuraman<sethuvignesh_at_gmail.com> wrote:
> Hello Experts,
>
> I am not able to pass multicast traffic from SW1 to SW2. My unicast routing
> is working perfectly.
>
> *SW1#ping 10.1.8.8 source 10.1.7.7*
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 10.1.8.8, timeout is 2 seconds:
> Packet sent with a source address of 10.1.7.7
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 168/375/936 ms
>
> * But multicast traffic is not working with Multicast BGP*.
>
> SW2(config)#interface FastEthernet1/6
> ip igmp join-group 224.1.1.1
>
>
> *SW1#ping 224.1.1.1 source 10.1.7.7 *
>
> Type escape sequence to abort.
> Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds:
> Packet sent with a source address of 10.1.37.7
> *.
> SW1#*
>
> The following is my configuration.
>
> *R1*:
> hostname R1
> !
> interface Loopback0
> ip address 150.1.1.1 255.255.255.255
> no clns route-cache
> !
> interface FastEthernet0/0
> ip address 150.1.15.1 255.255.255.0
> duplex full
> no clns route-cache
> !
> interface Serial2/0
> no ip address
> encapsulation frame-relay
> serial restart-delay 0
> no frame-relay inverse-arp
> no clns route-cache
> !
> interface Serial2/0.1 point-to-point
> ip address 150.1.12.1 255.255.255.0
> ip pim dense-mode
> frame-relay interface-dlci 102
> !
> interface Serial2/1
> ip address 150.1.13.1 255.255.255.0
> ip pim dense-mode
> serial restart-delay 0
> clockrate 64000
> no clns route-cache
> !
> router ospf 1
> router-id 150.1.1.1
> log-adjacency-changes
> network 150.1.1.1 0.0.0.0 area 0
> network 150.1.13.0 0.0.0.255 area 0
> default-information originate always
> !
> router bgp 1
> bgp log-neighbor-changes
> neighbor 150.1.12.2 remote-as 2
> neighbor 150.1.15.5 remote-as 3
> !
> address-family ipv4
> neighbor 150.1.12.2 activate
> neighbor 150.1.15.5 activate
> no auto-summary
> no synchronization
> network 10.1.7.0 mask 255.255.255.0
> exit-address-family
> !
> address-family ipv4 multicast
> neighbor 150.1.12.2 activate
> no auto-summary
> network 10.1.7.0 mask 255.255.255.0
> exit-address-family
>
> *R2*:
> hostname R2
> !
> interface Loopback0
> ip address 150.1.2.2 255.255.255.255
> no clns route-cache
> !
> interface FastEthernet0/0
> ip address 150.1.24.2 255.255.255.0
> ip pim dense-mode
> duplex full
> no clns route-cache
> !
> interface Serial2/0
> no ip address
> encapsulation frame-relay
> serial restart-delay 0
> no frame-relay inverse-arp
> no clns route-cache
> !
> interface Serial2/0.1 point-to-point
> ip address 150.1.12.2 255.255.255.0
> ip pim dense-mode
> frame-relay interface-dlci 201
> !
> router bgp 2
> bgp log-neighbor-changes
> neighbor 150.1.12.1 remote-as 1
> neighbor 150.1.24.4 remote-as 2
> !
> address-family ipv4
> neighbor 150.1.12.1 activate
> neighbor 150.1.24.4 activate
> neighbor 150.1.24.4 next-hop-self
> no auto-summary
> no synchronization
> exit-address-family
> !
> address-family ipv4 multicast
> neighbor 150.1.12.1 activate
> neighbor 150.1.24.4 activate
> neighbor 150.1.24.4 next-hop-self
> no auto-summary
> exit-address-family
>
> *R3*:
> hostname R3
> !
> interface Loopback0
> ip address 150.1.3.3 255.255.255.255
> !
> interface Ethernet0/0
> ip address 10.1.37.3 255.255.255.0
> ip pim dense-mode
> full-duplex
> !
> interface Serial1/2
> ip address 150.1.13.3 255.255.255.0
> ip pim dense-mode
> serial restart-delay 0
> !
> interface Serial1/3
> no ip address
> shutdown
> serial restart-delay 0
> !
> router ospf 1
> router-id 150.1.3.3
> log-adjacency-changes
> network 10.1.37.0 0.0.0.255 area 0
> network 150.1.0.0 0.0.255.255 area 0
>
> *R4*:
> hostname R4
> !
> interface Loopback0
> ip address 150.1.4.4 255.255.255.255
> !
> interface Ethernet0/0
> ip address 150.1.24.4 255.255.255.0
> ip pim dense-mode
> full-duplex
> !
> interface Serial1/0
> no ip address
> encapsulation frame-relay
> serial restart-delay 0
> no frame-relay inverse-arp
> !
> interface Serial1/0.1 point-to-point
> ip address 150.1.45.4 255.255.255.0
> ip pim dense-mode
> frame-relay interface-dlci 405
> !
> router bgp 2
> bgp log-neighbor-changes
> neighbor 150.1.24.2 remote-as 2
> neighbor 150.1.45.5 remote-as 3
> !
> address-family ipv4
> neighbor 150.1.24.2 activate
> neighbor 150.1.24.2 next-hop-self
> neighbor 150.1.45.5 activate
> no auto-summary
> no synchronization
> exit-address-family
> !
> address-family ipv4 multicast
> neighbor 150.1.24.2 activate
> neighbor 150.1.24.2 next-hop-self
> neighbor 150.1.45.5 activate
> no auto-summary
> no synchronization
> exit-address-family
>
> *R5*:
> hostname R5
> !
> interface Loopback0
> ip address 150.1.5.5 255.255.255.255
> !
> interface Ethernet0/0
> ip address 150.1.56.5 255.255.255.0
> ip pim dense-mode
> full-duplex
> !
> interface Ethernet0/1
> ip address 150.1.15.5 255.255.255.0
> full-duplex
> !
> interface Serial1/0
> no ip address
> encapsulation frame-relay
> serial restart-delay 0
> no frame-relay inverse-arp
> !
> interface Serial1/0.1 point-to-point
> ip address 150.1.45.5 255.255.255.0
> ip pim dense-mode
> frame-relay interface-dlci 504
> !
> router ospf 1
> router-id 150.1.5.5
> log-adjacency-changes
> network 150.1.5.5 0.0.0.0 area 0
> network 150.1.45.0 0.0.0.255 area 0
> network 150.1.56.0 0.0.0.255 area 0
> default-information originate always
> !
> router bgp 3
> bgp log-neighbor-changes
> neighbor 150.1.15.1 remote-as 1
> neighbor 150.1.45.4 remote-as 2
> !
> address-family ipv4
> neighbor 150.1.15.1 activate
> neighbor 150.1.45.4 activate
> no auto-summary
> no synchronization
> network 10.1.8.0 mask 255.255.255.0
> exit-address-family
> !
> address-family ipv4 multicast
> neighbor 150.1.45.4 activate
> no auto-summary
> no synchronization
> exit-address-family
>
>
> *R6*:
> hostname R6
> !
> interface Loopback0
> ip address 150.1.6.6 255.255.255.255
> !
> interface Ethernet0/0
> ip address 150.1.56.6 255.255.255.0
> ip pim dense-mode
> full-duplex
> !
> interface Ethernet0/1
> ip address 10.1.68.6 255.255.255.0
> ip pim dense-mode
> full-duplex
> !
> router ospf 1
> router-id 150.1.6.6
> log-adjacency-changes
> network 10.1.68.0 0.0.0.255 area 0
> network 150.1.0.0 0.0.255.255 area 0
>
> *The issue am facing is RPF check is failing on R2*.
>
> *R2#sh ip mroute count *
> Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
>
> Group: 224.1.1.1, Source count: 1, Packets forwarded: 0, Packets received: 1
> Source: 10.1.37.7/32, Forwarding: 0/0/0/0, *Other: 1/1/0*
>
> Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets received:
>
> *R2#sh ip bgp ipv4 multicast *
> BGP table version is 2, local router ID is 150.1.2.2
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
> r RIB-failure, S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> **> 10.1.7.0/24 150.1.12.1 75 0 1 i*
>
> *R2#sh ip bgp ipv4 unicast *
> BGP table version is 4, local router ID is 150.1.2.2
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
> r RIB-failure, S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> **> 10.1.7.0/24 150.1.12.1 75 0 1 i*
> *>i10.1.8.0/24 150.1.24.4 21 100 0 3 i
> * 150.1.12.1 0 1 3 i
>
> *R2#sh ip rpf 10.1.7.7*
> RPF information for ? (10.1.7.7)
> * RPF interface: Serial2/0.1
> RPF neighbor: ? (150.1.12.1)
> RPF route/mask: 10.1.7.0/24
> RPF type: mbgp*
> RPF recursion count: 0
> Doing distance-preferred lookups across tables
>
> *R2#sh ip mroute 224.1.1.1*
> IP Multicast Routing Table
> Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
> L - Local, P - Pruned, R - RP-bit set, F - Register flag,
> T - SPT-bit set, J - Join SPT, M - MSDP created entry,
> X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
> U - URD, I - Received Source Specific Host Report, Z - Multicast
> Tunnel
> Y - Joined MDT-data group, y - Sending to MDT-data group
> Outgoing interface flags: H - Hardware switched, A - Assert winner
> Timers: Uptime/Expires
> Interface state: Interface, Next-Hop or VCD, State/Mode
>
> (*, 224.1.1.1), 00:00:24/stopped, RP 0.0.0.0, flags: D
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> FastEthernet0/0, Forward/Dense, 00:00:24/00:00:00
> Serial2/0.1, Forward/Dense, 00:00:24/00:00:00
>
> *(10.1.37.7, 224.1.1.1), 00:00:24/00:02:35, flags:
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:*
> Serial2/0.1, Forward/Dense, 00:00:24/00:00:00
> FastEthernet0/0, Forward/Dense, 00:00:24/00:00:00
>
> I am not sure why the RPF check is failing on R2 and incoming interface is
> showing Null.
>
> Could you please someone help me in solving this issue.
>
> Thanks,
> Vignesh
>
>
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Received on Fri Jul 24 2009 - 16:01:36 ART