All things related to multicast

[Mark Fullmer <>]

>        (i).   Netaid multicast went really, really well.
> 
>        (ii).  0% loss inside the UO campus:

Same here.  An outdated MBGP route map to prefer vBNS over Abilene for
multicast turned out to be a lossy path from UO, but got that fixed
before Saturday.  mtrace included below.

> cisco7-gw#sh ip mpacket 128.223.156.23 224.2.249.91 quality 
> Calculating RTP data quality for 224.2.249.91
>   Session: NetAid FrontStage (MPEG1)
>   Source: 128.223.156.23 (uovid-00.uoregon.edu), Port: 52972
>     Packets received: 302, lost: 0, loss percentage: 0%
>     Packets misordered: 0, average loss gap: 0
> cisco7-gw#

I need to look a little closer but the loss percentage reported here
looks to be triggered by out of order packets.  It's not something
that caused any noticible problems on the clients.

>        Thanks again for your input. I'll also plug the UO guys here,
>        Hans, Joel, and Lucy. They did an awesome job of getting the
>        content up.

A big thanks to everyone involved in the broadcast.  It generated more
high level interest in multicast deployment on campus than any prior
events.  There's a big difference in perception of the viability
of IP multicast technology when delivering content from across the
country versus across campus, especially when the bandwidth to 
support the same number of unicast receivers does not exist.

--- vBNS (lossy)

Mtrace from 128.223.156.23 to 128.146.226.62 via group 224.2.249.91
Querying full reverse path... 
  0  ? (128.146.226.62)
 -1  se3-fa11-1-0.net.ohio-state.edu (128.146.222.1)  PIM  thresh^ 0   
[default]
 -2  kc2-atm0-0s31.net.ohio-state.edu (140.254.59.81)  Unknown protocol code 
8  thresh^ 0  Reached RP/Core
 -3  krc3-atm4-0s1.ohio-gigapop.net (192.88.192.10)  Unknown protocol code 8  
thresh^ 0  Reached RP/Core
 -4  cs-ohiostate.nor.vbns.net (204.147.128.205)  Unknown protocol code 8  
thresh^ 0  
 -5  cs-atm0-0-16.wae.vbns.net (204.147.131.226)  Unknown protocol code 8  
thresh^ 0  
 -6  abilene-vbns.abilene.ucaid.edu (198.32.11.9)  Unknown protocol code 8  
thresh^ 0  
 -7  clev-nycm.abilene.ucaid.edu (198.32.8.29)  Unknown protocol code 8  
thresh^ 0  
 -8  ipls-clev.abilene.ucaid.edu (198.32.8.25)  Unknown protocol code 8  
thresh^ 0  
 -9  kscy-ipls.abilene.ucaid.edu (198.32.8.5)  Unknown protocol code 8  
thresh^ 0  
-10  denv-kscy.abilene.ucaid.edu (198.32.8.13)  Unknown protocol code 8  
thresh^ 0  
-11  ogig-den.oregon-gigapop.net (198.32.163.13)  Unknown protocol code 8  
thresh^ 0  Reached RP/Core
-12  uo.oregon-gigapop.net (198.32.163.2)  PIM  thresh^ 0  Reached RP/Core
-13  cisco5-gw.uoregon.edu (128.223.3.5)  PIM  thresh^ 0  
-14  uovid-00.uoregon.edu (128.223.156.23)
Round trip time 469 ms; total ttl of 12 required.

Waiting to accumulate statistics... Results after 10 seconds:

  Source        Response Dest    Overall     Packet Statistics For Traffic 
From
128.223.156.23  224.0.1.32       Packet      128.223.156.23 To 224.2.249.91
     v       __/  rtt  138 ms     Rate       Lost/Sent = Pct  Rate
128.223.156.1  
128.223.3.5     cisco5-gw.uoregon.edu 
     v     ^      ttl    1       265 pps       -2/926  =  0%  92 pps
128.223.3.7    
198.32.163.2    uo.oregon-gigapop.net Reached RP/Core
     v     ^      ttl    2       319 pps        7/928  =  1%  92 pps
198.32.163.1   
198.32.163.13   ogig-den.oregon-gigapop.net Reached RP/Core
     v     ^      ttl    3       308 pps       16/921  =  2%  92 pps
198.32.163.14  
198.32.8.13     denv-kscy.abilene.ucaid.edu 
     v     ^      ttl    4       310 pps      -21/905  = -1%  90 pps
198.32.8.14    
198.32.8.5      kscy-ipls.abilene.ucaid.edu 
     v     ^      ttl    5       308 pps        1/926  =  0%  92 pps
198.32.8.6     
198.32.8.25     ipls-clev.abilene.ucaid.edu 
     v     ^      ttl    6       308 pps      -22/925  = -1%  92 pps
198.32.8.26    
198.32.8.29     clev-nycm.abilene.ucaid.edu 
     v     ^      ttl    7       309 pps       54/947  =  6%  94 pps
198.32.8.30    
198.32.11.9     abilene-vbns.abilene.ucaid.edu 
     v     ^      ttl    8       307 pps       -7/893  =  0%  89 pps
198.32.11.10   
204.147.131.226 cs-atm0-0-16.wae.vbns.net 
     v     ^      ttl    9       210 pps       -8/900  =  0%  90 pps
204.147.131.225
204.147.128.205 cs-ohiostate.nor.vbns.net 
     v     ^      ttl   10       211 pps        0/908  =  0%  90 pps
204.147.128.206
192.88.192.10   krc3-atm4-0s1.ohio-gigapop.net Reached RP/Core
     v     ^      ttl   11       211 pps        0/908  =  0%  90 pps
192.88.192.9   
140.254.59.81   kc2-atm0-0s31.net.ohio-state.edu Reached RP/Core
     v     ^      ttl   12       211 pps      -23/908  = -2%  90 pps
140.254.59.82  
128.146.222.1   se3-fa11-1-0.net.ohio-state.edu 
     v      \__   ttl   13       217 pps        ?/931         93 pps
128.146.226.62  128.146.222.3
  Receiver      Query Source

--- Abilene (okay)


Mtrace from 128.223.156.23 to 128.146.226.62 via group 224.2.249.91
Querying full reverse path... 
  0  ? (128.146.226.62)
 -1  se3-fa11-1-0.net.ohio-state.edu (128.146.222.1)  PIM  thresh^ 0   
[default]
 -2  kc2-atm0-0s31.net.ohio-state.edu (140.254.59.81)  Unknown protocol code 
8  thresh^ 0  Reached RP/Core
 -3  krc3-atm4-0s1.ohio-gigapop.net (192.88.192.10)  Unknown protocol code 8  
thresh^ 0  Reached RP/Core
 -4  abilene.ohio-gigapop.net (192.88.192.33)  Unknown protocol code 8  
thresh^ 0  
 -5  ipls-clev.abilene.ucaid.edu (198.32.8.25)  Unknown protocol code 8  
thresh^ 0  
 -6  kscy-ipls.abilene.ucaid.edu (198.32.8.5)  Unknown protocol code 8  
thresh^ 0  
 -7  denv-kscy.abilene.ucaid.edu (198.32.8.13)  Unknown protocol code 8  
thresh^ 0  
 -8  ogig-den.oregon-gigapop.net (198.32.163.13)  Unknown protocol code 8  
thresh^ 0  Reached RP/Core
 -9  uo.oregon-gigapop.net (198.32.163.2)  PIM  thresh^ 0  Reached RP/Core
-10  cisco5-gw.uoregon.edu (128.223.3.5)  PIM  thresh^ 0  
-11  uovid-00.uoregon.edu (128.223.156.23)
Round trip time 151 ms; total ttl of 9 required.

Waiting to accumulate statistics... Results after 9 seconds:

  Source        Response Dest    Overall     Packet Statistics For Traffic 
From
128.223.156.23  224.0.1.32       Packet      128.223.156.23 To 224.2.249.91
     v       __/  rtt   75 ms     Rate       Lost/Sent = Pct  Rate
128.223.156.1  
128.223.3.5     cisco5-gw.uoregon.edu 
     v     ^      ttl    1       265 pps        0/851  =  0%  94 pps
128.223.3.7    
198.32.163.2    uo.oregon-gigapop.net Reached RP/Core
     v     ^      ttl    2       317 pps      -92/851  =-10%  94 pps
198.32.163.1   
198.32.163.13   ogig-den.oregon-gigapop.net Reached RP/Core
     v     ^      ttl    3       350 pps        7/943  =  1% 104 pps
198.32.163.14  
198.32.8.13     denv-kscy.abilene.ucaid.edu 
     v     ^      ttl    4       349 pps       -8/936  =  0% 104 pps
198.32.8.14    
198.32.8.5      kscy-ipls.abilene.ucaid.edu 
     v     ^      ttl    5       349 pps       -4/944  =  0% 104 pps
198.32.8.6     
198.32.8.25     ipls-clev.abilene.ucaid.edu 
     v     ^      ttl    6       350 pps      -12/948  =  0% 105 pps
198.32.8.26    
192.88.192.33   abilene.ohio-gigapop.net 
     v     ^      ttl    7       238 pps      118/960  = 12% 106 pps
192.88.192.34  
192.88.192.10   krc3-atm4-0s1.ohio-gigapop.net Reached RP/Core
     v     ^      ttl    8       210 pps        0/842  =  0%  93 pps
192.88.192.9   
140.254.59.81   kc2-atm0-0s31.net.ohio-state.edu Reached RP/Core
     v     ^      ttl    9       210 pps       -3/842  =  0%  93 pps
140.254.59.82  
128.146.222.1   se3-fa11-1-0.net.ohio-state.edu 
     v      \__   ttl   10       212 pps        ?/845         93 pps
128.146.226.62  128.146.222.3
  Receiver      Query Source

--
mark