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Diffstat (limited to 'usr.sbin')
| -rw-r--r-- | usr.sbin/mrouted/RELEASE | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/usr.sbin/mrouted/RELEASE b/usr.sbin/mrouted/RELEASE new file mode 100644 index 0000000..5012751 --- /dev/null +++ b/usr.sbin/mrouted/RELEASE @@ -0,0 +1,326 @@ +$Id: README-3.8.mrouted,v 3.8 1995/11/29 22:23:02 fenner Rel $ + + IP Multicast Extensions for BSD-Derived Unix Systems + + Release 3.8 + November 29, 1995 + + available from parcftp.xerox.com, + file pub/net-research/ipmulti/mrouted3.8.tar.Z + binaries pub/net-research/ipmulti/mrouted3.8-sparc-sunos41x.tar.Z + pub/net-research/ipmulti/mrouted3.8-sparc-solaris2.tar.Z + pub/net-research/ipmulti/mrouted3.8-i386-bsd.tar.Z + pub/net-research/ipmulti/mrouted3.8-alpha-osf1.tar.Z + pub/net-research/ipmulti/mrouted3.8-sgi-irix.tar.Z + pub/net-research/ipmulti/mrouted3.8-hp-hpux.tar.Z + +Note: The 3.8 release is mrouted-only, and will run on top of a 3.5 kernel. +It is a drop-in replacement for mrouted 3.5, 3.6 or 3.7 . + +The 3.8 release fixes the following bugs: + + o mrouted would fail to forget prunes when a neighbor went away, + thus potentially sending traffic down a tunnel after the tunnel + endpoint has gone down. This was due to some research code making + it into the "emergency" 3.7 release, sigh. + + o mrouted could send prunes with negative lifetimes. This causes + slightly higher prune traffic but shouldn't be any major problem. + +=========== +Release 3.7 +November 28, 1995 + +The 3.7 release fixes the following bugs: + + o mrouted now ignores route reports that include bogus netmasks. + There was a bug in 3.5 that would mangle default routes into + tens of bogus routes; this should prevent that bug from killing + the MBONE. + + This solution can cause route flaps and black holes until the + 3.5's are gone or all of the 3.5's neighbors are 3.7 . + + o mrouted now ignores duplicate routes. Ciscos and the above 3.5 + bug could cause two copies of the same route to appear in a single + routing update; mrouted would insert two copies of the same route + into its routing table and wreak all sorts of havoc. + + o mrouted now sends a group-specific query for both retransmissions + of a g-s query; previous versions sent a general query the second + time. + + o mrouted now loops back multicasted mtrace responses and + group-specific membership queries + + o mrouted now performs deterministic tiebreaking between two + neighbors on the same vif. + + o mrouted now only does duplicate suppression on traceroute requests, + not all traceroute packets, so that a loop can be nicely detected + via a duplicate router instead of just a timeout. + + o the buffer size that mrouted uses has been increased to allow + more than 16 hops in mtrace messages. + + o mtrace's hop-by-hop termination is now more likely to be correct. + + o mrinfo now waits for the responses to its retransmitted queries. + +The 3.7 release has the following new features: + + o The configuration file can accept a hostname as the other end + of a tunnel. There must be a single name->ip mapping for the + given name, however, or mrouted will fail to start up. + + o mrinfo now sends requests to all interfaces of a multihomed host. + + o mtrace's passive mode has been implemented. + + o The first screen of mtrace statistics is shorter and more likely + to fit on one screen. + +=========== +Release 3.6 +June 26, 1995 + +The 3.6 release fixes the following bugs: + + o mrouted would dump core when attempting to report no routes (i.e. upon + startup, if you have no enabled phyint's) + + o mrouted would dump core if requested to traceroute a source for which it + had no route + + o neighbor flags were not always properly updated on probe or report + + o mrouted would sometimes reply to a multicast traceroute on a disabled + phyint; now it uses the first configured phyint to reply to traceroutes. + + o host routes (i.e. netmask 0xffffffff) works now; it was discarding + IGMP from the host because it was coming from the "broadcast address" + of the subnet. + + o send_igmp() now treats the failure to send an mtrace or a neighbor + reply as informational, as opposed to warning. + + o mrouted would go into an infinite loop trying to respond to a traceroute + for a source with a netmask of 0xffffffff. + + o vifs_with_neighbors was not being reset if the mrouted was restarted + with SIGHUP + + o the default route was not being properly advertised to neighbors (although + it was accepted if it was advertised to it) + + o ANSI-fication for those who it helps, still-K&R-ish for those it doesn't. + + o mtrace now attempts to trace three hops past a non-responding router, + in the hopes that it does support traceroute but just couldn't respond + (i.e. unicast didn't work and it can't source multicast because all its + phyints are disabled). + + o mrinfo now times out even on a multicast router. + + +=========== +Release 3.5 +May 8, 1995 + +The 3.5 release has the following new features: + + o The kernel and mrouted make sure that each is the correct version, to + prevent problems with mismatched kernel/mrouted versions. A too-old + mrouted will die with the error: + + can't enable DVMRP routing in kernel: Option not supported by protocol + + o mrouted can accept and propogate a default route (essential for + heirarchical multicast routing) + + o Kernel route cache keeps source-specific routes instead of subnet routes, + eliminating hashing and longest-match problems. + (allows classless routing, longest-match and default routing) + + o Cached kernel routes only get deleted if no traffic is flowing, to + facilitate multicast traceroute + + o mrouted has a new configuration file parser, which provides better error + messages than before, and allows named boundaries (see man page) + + o added "netmask" to phyint configuration, at the suggestion of + Anders Klemets + + o System V and FreeBSD compatibility from John Brezak <brezak@ch.hp.com> + + o phyint's can have additional subnets configured, for people with + multiple subnets on one physical network. mrouted.conf syntax is + altnet 1.2.3.0, or altnet 1.2.3.0/24 if you need to specify + a different netmask. There can be as many altnet statements + as you need. + + o both mrouted and the kernel now support classless addresses. + + o the kernel supports PIM assert processing by notifying the router + when a packet arrives on the wrong interface + + o the kernel keeps additional counters, and mrouted can be compiled to + support SNMP and the Multicast MIB + + o the packet classifier in the kernel now uses the following udp port + ranges: + [0, 16384) - lowest priority, unclassified + [16384, 32768) - highest priority, i.e. audio + [32768, 49152) - medium priority, i.e. whiteboard + [49152, 65536) - low priority, i.e. video + A future release of a session directory will allocate ports in these + ranges. + + o the configuration code has been modified to default tunnels' rate_limit + parameters to 500kbps. This is easily modified with a rate_limit keyword + in mrouted.conf, but should be a good default for the MBONE in general. + + o The tunnel sending code now caches a route for ip_output(), this should + help performance on machines with lots of tunnels. + + o Dispatching for de-capsulating packets is now via protosw[], making + reception of other raw protocols more efficient + + o Neighbor capabilities are discovered via a bitmask as opposed to + version number. + + o Multicast traceroute code improved + + o mrouted can be compiled with Routing Support for Resource Reservation + (RSRR), required for RSVP. + + +The 3.5 release fixes the following bugs: + + o The IGMPv2 query timeout field was interpreted as being in units of + 200ms as opposed to 100ms, thus the maximum timeout was set to twice + the expected value. This is not fatal, as mrouted always queries + twice in the expectation that a packet could get loss, but it does + make it less robust in the face of packet loss. + + o IGMP could report membership in local-only groups (i.e. 224.0.0.X) + + o IGMP could get confused by hearing its own new membership reports, thus + a router would never perform fast leave. + + o IGMP could reset timers for the wrong interface. + + o mrouted put a bogus value in the maximum timeout field of IGMPv2 query + packets. + + o Non-querier mrouters would respond to IGMP leave messages + + o mrouted was not performing fast leave properly + + o If the last member goes away on a transit network, the upstream router + would stop forwarding even if there are downstream members. + + o Kernel hash function improved + + o Eliminated possibility of panic(): timeout in cache maintenance + + o Reordered resource allocation when sending upcall to handle failure properly + + o some endian-ness bugs squashed in mrouted, probably more to go. + + o Multicast traceroute could send a reply on a disabled interface. + + +This release consists of the following files: + + + README-3.8.mrouted - this file + + mrouted/* - version 3.8 of mrouted, + mrinfo, map-mbone and + mtrace. + + ifconfig/* - Changes to ifconfig to + show multicast interfaces + + netstat/* - Diffs to netstat + + ping/* - sources for ping + which support + multicasting + + mtest/* - utility for testing + multicast group + membership + + +MROUTED 3.8 + +Mrouted 3.8 has two optional features: SNMP and RSRR. RSRR support +is required for running RSVP; the SNMP code, with the help of the +ISODE snmpd, implements both the Multicast MIB and the DVMRP MIB. + +RSRR +---- +Routing Support for Resource Reservations (RSRR) was contributed by +Daniel Zappala <daniel@isi.edu>. + +To enable RSRR support, uncomment the three lines starting with +RSRR near the top of the Makefile and "make clean; make". Or use +the prebuilt binary, mrouted.rsrr . + +RSRR allows RSVP to query mrouted for its routing entry for a particular +source-group pair. Using the routing entry and the IP_MULTICAST_VIF +socket call, RSVP can forward distinct control messages out each +outgoing interface. This version of mrouted supports RSRR messages +using a Unix datagram socket. + +RSRR currently includes two pairs of query-reply messages. RSVP sends +an Initial Query when it starts. Mrouted responds with an Initial Reply +that includes the set of vifs it is using, flagging those that are +administratively disabled. When RSVP needs the routing entry for a +source-group pair, it sends a Route Query. Mrouted responds with a +Route Reply that includes the incoming vif and outgoing vifs for the +source-group pair. + +RSVP may request route change notification by setting the notification +bit in the Route Query. If mrouted can provide route change +notification for the source-group pair, it sets the notification bit in +its Route Reply. When the routing entry for the source-group pair +changes, mrouted sends an unsolicited Route Reply containing the new +routing information. The initial release of mrouted 3.5 did not support +route change notification and always returned a Route Reply with the +notification bit cleared. This release of mrouted provides route change +notification when possible. + +SNMP +---- +SNMP support was contributed by David Thaler <thalerd@eecs.umich.edu>. + +To enable SNMP support, uncomment the six lines near the top of +the Makefile below the description of SNMP support, or use the +prebuilt binary, mrouted.snmp or mrouted.rsrr.snmp . + +To link the SNMP-capable mrouted, you need the CMU libraries. +See http://nic.merit.edu/~mbone/ for a full mrouted-snmp distribution. + +Make sure to add the "sysName", "sysContact", "sysVersion" and +"sysLocation" variables to your /etc/mrouted.conf if you want them +to provide anything other than default values. + +Example: + +sysName "tibia" +sysContact "Bill Fenner <fenner@parc.xerox.com> +1 415 812-4816" +sysVersion "SunOS 4.1.3 and mrouted 3.8" +sysLocation "MAXC room, PARC building 35" + +The SNMP version of mrouted has an additional command line flag: + + -P snmp_port + + Specifies a port for SNMP communication (default 161). This option + should be used when another SNMP daemon already exists. The + preferred alternate port in this case is port 9161. + +The mstat(8) program allows querying of statistics using SNMP. |
