Multicast Router - Protocols
Remote Protocol Support
PPP support (RFC 1661).
This RFC defines the PPP standard used for the
negotiation of every link (even those using the MPPP protocol). The
protocol exchanges configuration packets using the LCP (Link Control
Protocol). WarpTwo is fully compliant with this RFC except that it
mandates the use of an Authentication protocol (either CHAP or PAP may be
used). The RFC allows Authentication be an optional service.
MPPP support (RFC 1990) (up to 8 links
per bundle in HotPool mode).
This RFC defines the PPP MultiLink Protocol (a.k.a as MP or
MPPP) used by WarpTwo routers when more than a single link will be used. WarpTwo
(in HotPools mode) supports up to 8 links in a single MPPP connection (or
'bundle').
User configuration control over LCP
negotiation parameters.
WarpTwo allows the user to configure most of the LCP
(Link Control Protocol) parameters used in the negotiation of each PPP
connection e.g. Magic Numbers, ACP compression etc. thus allowing the user
to configure a connection to even the most unusually configured remote
systems. WarpTwo does not allow and will always NACK a request for the use
an MP discriminator option (a very weak form of enabling MultiLink
'bundling')
User configuration control over IPCP parameters.
The user may configure both the local and remote addresses
used in IPCP (Internet Protocol Control Protocol) negotiation.
Link ‘Bundling’ only uses PAP or CHAP
authentication.
The WarpTwo will only bundle links where the
Authenticated (using CHAP or PAP) result for each link is the same, thi is
in ZyTrax's view the most secure method of bundling - all other methods,
notably the use of the MP discriminator, provide poor results and can lead
to reliability problems.
LCP echo requests are used for link
integrity checking (every 30 seconds).
WarpTwo uses LCP Echo requests on a fixed 30 second
interval to monitor the availability and integrity of each channel. The
LCP request consumes less that 0.01 % of the bandwidth and has significant
benefits when poor or variable quality ISDN lines are in operation.
ISDN Protocols
WarpTwo supports the following ISDN protocols:
National ISDN (NI) 1, 2 and 3
The North American (U.S. and Canada) standard defined by Bellcore (Telordia).
Custom 5ESS (Lucent)
A pre National ISDN (NI) standard being gradually replaced. Defined by Lucent for the 5ESS Class 5 switching system.
Custom DMS100 (Nortel).
A pre National ISDN (NI) standard being gradually replaced. Defined by Nortel
for the DMS-100 Class 5 switching system.
ETSI Net 3
European ISDN standard defined by the European Telecommunications Standard Institute (ETSI). Replaces all previous country by country variants.
