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New Member

PGM Host mode

Hi,

Several CISCO routers / IOS versions support Pragmatic General Multicast (PGM, rfc3208) and allow either or both of two flavors to be configured: PGM Router Assist and PGM Host mode. What exactly is the purpose of PGM Host mode and how can it be used in practice?

Thanks for any insight / references you may be able to provide,

Ronald in 't Velt

TNO Physics and Electronics Laboratory

The Hague, The Netherlands

2 REPLIES
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Re: PGM Host mode

New Member

Re: PGM Host mode

OK, thanks. I guess I should have mentioned that I had already found that reference myself (but was still puzzled). In the mean time, I have also found the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_c/ipcpt3/1cfpgm.htm#1002636

which contains the intriguing statement:

"Note PGM contains an element that assists routers and switches in handling PGM transport data as it flows through a network. Unlike the Router Assist element, the Host element does not have a current practical application."

So my question remains: What is the purpose of / intention behind PGM Host mode? Also, in this context, can somebody clarify what a Virtual Host Interfave (vif) is and what it is used for ?

Thanks,

Ronald in 't Velt

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