Livingston & BGP & multicast USENET (was blah blah blah)

James D. Butt jbutt at
Wed Jun 11 00:12:34 UTC 1997

> > 	Livingston has serious problems with its BGP code and
> > 	has since it was first available (going on six
> >       months now)

Huh... Uhh I am not aware of this..

> I'd be curious about how many updates/second this box can
> handle while forwarding across all interfaces at line
> rate, and how quickly from the receipt of an update
> switching to another path the forwarding engine begins
> sending traffic along that path, and how many
> christmas-tree packets flowing at line rates to a series
> of changing destinations are lost or mis-forwarded.

Well I know that on the IRX platform the router is not fast enough to 
deal with light ammounts of updates with 5 or 6 sessions and still 
forward packets.. I am told the on the PM3's that is handles it just 

The IRX is old 3 years or so 386DX-40 based where the PM3 is 486/66

For instance when we reset a IBGP session when the session 
establishes when loading the routes (15-20k) it will stop forwarding 
for 5-10 sec.
> I would be interested in actual "it works/it doesn't"
> commentary (and possible explanation of "it doesn't", if
> that's the case) involving this particular router from
> some sizeable ISP or other.  Learning from vendor mistakes
> is of use to many of us.

It works.. I am very happy with it.. On the IRX platform it is not 
ment as a backbone router but for customer connections it works 
great. We have a few of them that are not accepting BGP routes but 
are anouncing customer routes.. It seems to work real well. I hope to 
get a PM3 in here to find out how well it works.. If the performance 
is as good as I have heard and the fact that I can fit 6-8 full views 
in 16 MB of ram... we might have a winner for some of our smaller 

Plus where space is not a big problem the IRX is a great price for a 
2 T1 2 56k port router for customer connects..

<Whole bunch of Multicast USENET stuff cut>
James 'J.D.' Butt                       Voice 319.557.8463
Network Engineer                        pager 319.557.6347
MidWest Communications, Inc.            fax   319.557.9771           
241 Main St.                            noc at
Dubuque, IA 52001                       jbutt at
"I used up all my sick days...   so I'm calling in dead"
"Lets fight against continental drift!"

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