All things related to multicast

[Amel Caldwell <>]

I am not getting a stream at U Washington.  Here's some stats from our border
router:

Amel

(One interesting thing is the two mtraces; first one gives up sayig route must
have changed; second one looks identical and works).

uwbr2>sh ip msdp sa 233.64.133.200
MSDP Source-Active Cache - 2044 entries
(128.182.61.124, 233.64.133.200), RP 128.182.13.13, MBGP/AS 1206,
00:18:28/00:01:45
(142.92.39.78, 233.64.133.200), RP 142.92.9.1, MBGP/AS 818, 00:07:07/00:05:33
(206.196.182.101, 233.64.133.200), RP 206.196.177.247, MBGP/AS 10886,
04:58:20/00:05
:33
uwbr2>sh ip mbgp 206.196.182.101
MBGP routing table entry for 206.196.176.0/21, version 2537
Paths: (1 available, best #1)
  Advertised to non peer-group peers:
    198.107.150.53 198.107.150.54
  101 11537 10886
    198.107.150.11 from 198.107.150.11 (198.107.151.11)
      Origin IGP, localpref 3700, weight 100, valid, external, best
uwbr2>mtrace 206.196.182.101 233.64.133.200
Type escape sequence to abort.
Mtrace from 206.196.182.101 to 198.107.150.52 via group 233.64.133.200
>From source (?) to destination (uwbr2-GE0-0.cac.washington.edu)
Querying full reverse path... * switching to hop-by-hop:
 0  uwbr2-GE0-0.cac.washington.edu (198.107.150.52)
-1  uwbr2-GE0-0.cac.washington.edu (198.107.150.52) [AS 101] PIM/MBGP Reached
RP/Cor
e [206.196.176.0/21]
-2  hnsp1-wes-ge-0-0-0-0.pnw-gigapop.net (198.107.150.11) [AS 101] PIM
[206.196.176
.0/21]
-3  abilene-pnw.pnw-gigapop.net (198.48.91.78) [AS 101] PIM/MBGP Reached
RP/Core [20
6.196.176.0/21]
-4  dnvr-sttl.abilene.ucaid.edu (198.32.8.50) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-5  kscy-dnvr.abilene.ucaid.edu (198.32.8.14) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-6  ipls-kscy.abilene.ucaid.edu (198.32.8.6) [AS 11537] PIM/MBGP Reached
RP/Core [20
6.196.176.0/21]
-7  clev-ipls.abilene.ucaid.edu (198.32.8.26) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-8  nycm-clev.abilene.ucaid.edu (198.32.8.30) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-9  wash-nycm.abilene.ucaid.edu (198.32.8.45) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-10 wash-abilene-oc48.maxgigapop.net (206.196.177.1) [AS 10886] PIM Reached
RP/Core
[206.196.176.0/21]
-11 Route must have changed...try again

uwbr2>mtrace 206.196.182.101 233.64.133.200
Type escape sequence to abort.
Mtrace from 206.196.182.101 to 198.107.150.52 via group 233.64.133.200
>From source (?) to destination (uwbr2-GE0-0.cac.washington.edu)
Querying full reverse path...
 0  uwbr2-GE0-0.cac.washington.edu (198.107.150.52)
-1  uwbr2-GE0-0.cac.washington.edu (198.107.150.52) [AS 101] PIM/MBGP Reached
RP/Cor
e [206.196.176.0/21]
-2  hnsp1-wes-ge-0-0-0-0.pnw-gigapop.net (198.107.150.11) [AS 101] PIM
[206.196.176
.0/21]
-3  abilene-pnw.pnw-gigapop.net (198.48.91.78) [AS 101] PIM/MBGP Reached
RP/Core [20
6.196.176.0/21]
-4  dnvr-sttl.abilene.ucaid.edu (198.32.8.50) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-5  kscy-dnvr.abilene.ucaid.edu (198.32.8.14) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-6  ipls-kscy.abilene.ucaid.edu (198.32.8.6) [AS 11537] PIM/MBGP Reached
RP/Core [20
6.196.176.0/21]
-7  clev-ipls.abilene.ucaid.edu (198.32.8.26) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-8  nycm-clev.abilene.ucaid.edu (198.32.8.30) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-9  wash-nycm.abilene.ucaid.edu (198.32.8.45) [AS 11537] PIM/MBGP Reached
RP/Core [2
06.196.176.0/21]
-10 wash-abilene-oc48.maxgigapop.net (206.196.177.1) [AS 10886] PIM Reached
RP/Core
[206.196.182.101/32]
uwbr2>
uwbr2>sh ip mroute 233.64.133.200 count
IP Multicast Statistics
392 routes using 210388 bytes of memory
45 groups, 7.71 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)

Group: 233.64.133.200, Source count: 3, Group pkt count: 672
  RP-tree: Forwarding: 10/0/95/0, Other: 2/0/0
  Source: 128.208.20.219/32, Forwarding: 482/1/71/0, Other: 1/0/0
  Source: 142.92.39.78/32, Forwarding: 180/1/66/0, Other: 1/0/0
  Source: 206.196.182.101/32, Forwarding: 0/0/0/0, Other: 0/0/0


On Mon, 6 May 2002, Marshall Eubanks wrote:

>On Mon, 06 May 2002 07:56:44 -0400
> "Marshall Eubanks" 
> <>
>  wrote:
>> Dear Jerry;
>>
>>     Thanks for all of your help setting up the multicasts last night. I
>> feel that we are close but not yet there on sending these out. At least,
>> we can receive these from  our offices.
>>
>>     We have a test loop up. I would appreciate people with I2 multicast
>> connectivity trying to join the stream and sending  reception reports.
>>
>> http://www.multicasttech.com/internet2/
>
>Someone out there is getting this - we have had RR's from U Washington and a
>host of MSDP SA's from Canarie
>
>multicasttech-1>show ip msdp sa | include 233.64.133.209
>(142.92.1.1, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(142.92.10.5, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(142.92.10.9, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(142.92.10.18, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:02/00:05:34
>(142.92.10.57, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(142.92.10.69, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(142.92.10.89, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(142.92.132.1, 233.64.133.209), RP 142.92.9.1, MBGP/AS 818, 00:09:58/00:04:38
>(205.189.32.217, 233.64.133.209), RP 205.189.32.248, MBGP/AS 6509,
>00:09:58/00:03:38
>(206.196.182.102, 233.64.133.209), RP 206.196.177.247, MBGP/AS 10886,
>10:36:43/00:01:39
>
>Still no stream for us, though.
>
>Marshall
>
>>
>> Here are the symptoms.
>>
>> 1.) From 63.105.122.8 I _cannot_ see the multicasts.
>>
>> [tme@hendrix
>>  dump]$ rtpdump -F ascii 233.64.133.201/7012
>> [tme@hendrix
>>  dump]$ rtpdump -F ascii 233.64.133.209/7070
>> [tme@hendrix
>>  dump]$ rtpdump -F ascii 233.64.133.200/7010
>>
>> 2.) I can see
>>  the SA's from the 63.105.122.1  router
>>
>> multicasttech-1>show ip msdp sa | include 233.64.133.209
>> (206.196.182.102, 233.64.133.209), RP 206.196.177.247, MBGP/AS 10886,
>> 09:04:03/00:05:52
>> 3.) I can now see the hotel address block in MBGP
>>
>>
>> multicasttech-1>show ip mbgp 206.196.182.102
>> BGP routing table entry for 206.196.176.0/21, version 1354851
>> Paths: (3 available, best #3)
>>   Advertised to non peer-group peers:
>>   63.251.101.52
>>   145 11537 10886
>>     166.61.8.89 from 166.61.8.89 (204.147.128.136)
>>       Origin IGP, localpref 100, valid, external
>>       Community: 9503719 713424897 756089782
>>   1239 11537 10886
>>     160.81.38.225 from 160.81.38.225 (144.228.242.54)
>>       Origin IGP, metric 73, localpref 100, valid, external
>>   15076 1239 11537 10886
>>     216.177.55.5 from 216.177.55.5 (216.177.32.254)
>>       Origin IGP, localpref 100, weight 500, valid, external, best
>>
>> 4.) I can mtrace all the way into the MAX gigapop core
>>
>> multicasttech-1>
>> multicasttech-1>mtrace
>> Source address or name: 206.196.182.102
>> Destination address or name: 63.105.122.1
>> Group address or name: 233.64.133.209
>> Multicast request TTL [64]:
>> Response address for mtrace:
>> Type escape sequence to abort.
>> Mtrace from 206.196.182.102 to 63.105.122.1 via group 233.64.133.209
>> From source (?) to destination (dmz-mct2.multicasttech.com)
>> Querying full reverse path...
>>  0  dmz-mct2.multicasttech.com (63.105.122.1)
>> -1  dmz-mct2.multicasttech.com (63.105.122.1) PIM/MBGP Reached RP/Core
>> [206.196.176.0/21]
>> -2  216.177.55.5 PIM/MBGP Reached RP/Core [206.196.176.0/21]
>> -3  208.1.115.206 [AS 1239] PIM Prune sent upstream [default]
>> -4  63.173.24.173 [AS 1239] PIM/MBGP  [206.196.176.0/21]
>> -5  sl-bb20-rly-14-2.sprintlink.net (144.232.19.121) [AS 1239] PIM/MBGP
>> [206.196.176.0/21]
>> -6  sl-bb22-sj-5-1.sprintlink.net (144.232.9.125) [AS 1239] PIM/MBGP
>> [206.196.176.0/21]
>> -7  sl-bb21-stk-11-0.sprintlink.net (144.232.8.41) [AS 1239] PIM/MBGP
>> [206.196.176.0/21]
>> -8  sl-bb22-stk-15-0.sprintlink.net (144.232.4.242) [AS 1239] PIM/MBGP
>> [206.196.176.0/21]
>> -9  sl-w1-mae-1-0-0.sprintlink.net (144.232.8.1) [AS 1239] PIM/MBGP Reached
>> RP/Core [206.196.176.0/21]
>> -10 198.9.201.205 [AS 24] PIM/MBGP Reached RP/Core [206.196.176.0/21]
>> -11 198.32.8.73 [AS 11537] PIM/MBGP Reached RP/Core [206.196.176.0/21]
>> -12 dnvr-snva.abilene.ucaid.edu (198.32.8.2) [AS 11537] PIM/MBGP Reached
>> RP/Core
>> [206.196.176.0/21]
>> -13 kscy-dnvr.abilene.ucaid.edu (198.32.8.14) [AS 11537] PIM/MBGP Reached
>> RP/Core [206.196.176.0/21]
>> -14 ipls-kscy.abilene.ucaid.edu (198.32.8.6) [AS 11537] PIM/MBGP Reached
>> RP/Core
>> [206.196.176.0/21]
>> -15 clev-ipls.abilene.ucaid.edu (198.32.8.26) [AS 11537] PIM/MBGP Reached
>> RP/Core [206.196.176.0/21]
>> -16 nycm-clev.abilene.ucaid.edu (198.32.8.30) [AS 11537] PIM/MBGP Reached
>> RP/Core [206.196.176.0/21]
>> -17 wash-nycm.abilene.ucaid.edu (198.32.8.45) [AS 11537] PIM/MBGP Reached
>> RP/Core [206.196.176.0/21]
>> -18 wash-abilene-oc48.maxgigapop.net (206.196.177.1) [AS 10886] PIM Reached
>> RP/Core [206.196.182.102/32]
>> multicasttech-1>
>>
>> 5.) At least last night, we could get multicasts _from_ the meeting site.
>>
>> Regards
>> Marshall
>>
>
>