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Revision Notes for Router Software v7.80 rev 8
Date: 3/29/95
Subj: Revision Notes for 7.80 fix 8
===========================================================================
SITE MANAGER COMPATIBILITY
===========================================================================
Router version is managed by Site Manager version
v7.80 1.80, 2.00
7.80 fix 1, 2, 3, 4, 5, 6, 7, 8 1.80, 2.00, 2.00 fix 1, 2
========================= Version 7.80 fix 8 =============================
The image for FRE hardware is: 1479542 May 22 16:37 boot.exe
The image for VME & AFN Floppy hardware is: 1509621 May 22 17:10 ace.out
The image for AN hardware is: 1299525 May 22 16:44 boot.exe
The image for IN & AFN Flash hardware is: 1374224 May 22 16:57 boot.exe
___________________________________________________________________________
Revision fix/7.80/8 corrects the following problems:
===========================================================================
CR None: IPX.
IPX router bus errors upon receipt of directed broadcast packets
that were not destined for this router.
This problem was introduced as a side effect of the repair
documented below in fix/7.80/7 in CR 12355.
========================= Version 7.80 fix 7 =============================
The image for FRE hardware is: 1479677 Mar 28 17:11 boot.exe
The image for VME & AFN Floppy hardware is: 1509777 Mar 28 17:32 ace.out
The image for AN hardware is: 1300400 Mar 28 17:16 boot.exe
The image for IN & AFN Flash hardware is: 1374406 Mar 28 17:24 boot.exe
___________________________________________________________________________
CR 13198: X.25.
When configuring an X25 Closed User Group with a value of 0 the
router does not create a facility in the Call Request Packet for
the CUG. Any other value from 1 - 999 will create this facility.
Site Manager says that all values from 0 - 999 are valid.
CR 13461: IP.
Slot resets infrequently occur with an 'Panic at gid_rem.c
line 59' error in the log. The operating system has been improved
so that the panic above will no longer occur due to a second
attempt to remove a process.
CR 12776: DLSw.
Disabling LLc2 on a router can cause Panic Vector 2 Bus Errors
if Sap 0 is configured.
CR 13286: IP.
IP packets with bad headers (fails checksum) where the header's
total length field contains a large value (larger than the size
of a buffer), can cause Tag Violation slot resets.
CR 12355: IPX.
IN particular circumstances (misconfiguration in an IPX network)
IPX Directed broadcast(rip/sap) gets routed out same interface
it was received on.
CR 13363: OSI.
When a Ping is issued from TI for OSI the field only allows you
to enter 38 Hex digits for the value of the address. The problem
is that you should be able to enter the Selector field with the
address which would be a total of 40 Hex digits.
CR 13297: DLSw.
The receipt of a CANUREACH with different source and destination
SAP's where the destination SAP is one defined in the DLS SAP
table but the source one is not, will cause a BUS error. If both
SAP's are defined in the SAP table the problem doesn't happen.
There is also no problem if neither is defined in the SAP table.
CR 13119: IP.
Snap Encapsulated 802.3 ARP requests incorrectly have the Hardware
Type Field set to 1 (Ethernet). This field should be set to
6 (IEEE 802 Network). It seems that certain End-stations, IBM
RS6000s for one, will not respond to our SNAP Encapsulated ARP
Requests over Enet when the endstation is configured for an 802.3
Network Interface. They will only respond if this field is set to 6.
CR 12886: IPX.
Adding a SAP filter to PPP interface that is going down/up can
cause Tag Violation slot resets.
CR None: IPX.
IPX router intermittently stops forwarding traffic for a
particular connection. This most typically occurs in a source
routed environment with end-station support configured.
CR 13210: Switched Services.
Hold down timer for dial backup does not work. If it is configured
the primary line may never come up on boot.
CR 13299: MIB.
The Mib tree does not support the case of two instances of the
same object, when one instance is a prefix of the other one
(variable length instances) the Mib will insert both of them in
the tree, but the longer one is then inaccessible and if one
deletes the shorter instances then both instances will be deleted
(creating a memory leak).
CR None: System:
TI 'save config' command fails on large config files even though
free memory available on the slot running TI is more than twice
the size of the config file. When the save fails, although an
informative error is recorded in the system log, NO error is
displayed to the TI session.
Note: The configuration save module now requires much less memory to
save the file to flash but it is important to note that the
memory used comes from a single segment which must be smaller
then the value recorded in the slot's MIB attribute
wfKernelMemoryMaxSegFree.
If the config save does fail for lack of a single memory segment
large enough there will now be an error displayed to the TI
session like; 'Config. file retrieval error.'
CR 13036: DLSw.
When an LLC token ring interface gets congested and starts sending
RNRs, the session gets stuck in 'enter busy' state and never gets
'exit busy'. The configuration is dual switch, two OS/2
workstations are used to establish an LU-LU connection.
CR 6432: System.
Network packets normally routed (if configured) are momentarily
bridged while routing sub-system (IP, IPX, AppleTalk...) is being
restarted. The packets are bridged permanently if the routing
sub-system is configured but disabled. This behavior as designed
in the series 7 and 8 architecture has created some rather
pernicious traffic conditions in looped IPX topologies as an
example.
This enhancement changes the router's behavior as described in
the chart below which makes distinctions between a routing
sub-system that is operating, configured but disabled, and
deleted.
SITUATION ACTION WHY
1. Box up - protocol Drop protocol. The way 5 series
disabled. platform works.
2. Boot with protocol Drop protocol. The way 5 series
disabled. platform works.
3. Box up - protocol Drop protocol. Stop routing loops.
fails.
4. Box up - protocol Bridge protocol. Protocol no longer
deleted. registered should in a
dynamic system act as
if never there.
5. Box up - protocol added Drop protocol. Similar to #2.
but disabled.
6. Box up - protocol Route protocol. Expected.
enabled.
Prior to this enhancement #1 thru #5 would bridge the protocol.
CR 12751: IPX.
With a looped environment and number of paths greater than 1,
IPX never loses routes that should be aged out.
CR 12916: PPP.
Slots running IPX router can panic when changing IPX network
address on a PPP interface.
CR 13057: IP.
Slot resets with Tag violations can occur on receipt of
re-ordered IP fragments when IP header of the first fragment
exceeds 20 bytes.
========================= Version 7.80 fix 6 =============================
The image for FRE hardware is: 1472596 Feb 24 12:33 boot.exe
The image for VME & AFN Floppy hardware is: 1501295 Feb 24 12:57 ace.out
The image for AN hardware is: 1292422 Feb 24 12:40 boot.exe
The image for IN & AFN Flash hardware is: 1368709 Feb 24 12:49 boot.exe
___________________________________________________________________________
CR 13179: Vines.
Vines router tends to PANIC during momentary period of all packet
buffers on a slot being in use.
CR 12807: Bridge.
Bridge SNAP filters do not work over PPP or Frame Relay interfaces.
CR 13166: Vines.
Under particular circumstances servers that use a neighbor as a
gateway can become unreachable from behind a BNET router.
CR 13000: Source Route Bridge.
Source Route Traffic Filter to Forward to Circuit Group only,
also forwards packets to IP Encaps subsystem.
CR 13092: Sync.
The 7.80 install.bat creates an erroneous line definition for
Sync connection.
CR 13131: System.
When the operating system's mechanism for single threading access
to a shared resource is utilized and one process waits behind
another, a 32 byte memory block is lost. Over time, this memory
leak that does not show up in the wfKernelEntry stats other than
a lack of free memory, can cause 'out of memory' slot resets.
CR 10670: OSPF.
OSPF adjacencies do not form when using the dial backup line
after the primary line is disabled.
CR 11762: DLSw.
A particular Netbios SQL application fails when going through
WF DLSw because we only allow for one connection per data link.
This application needs the client and server to have 2 sessions
opened, for 2 different Netbios names, at the same time. The first
session is opened OK but when the second tries to come up the WF
routers will terminate the data link (DISC at both ends).
CR 12905: IP.
Proxy ARP would stop responding to ARP request for reachable
hosts located across sync lines, after a specific sequence of
events. If the sync line connected to the remote router is brought
down and a minute later up again, the first time everything will
still work. The line is then dropped again, but this time the ARP
entry for the PC in the remote site is removed from the station
in the central site. When the line is put back the router will
no longer respond to the ARP requests for the remote PC arriving
at the port with proxy ARP enabled. Routing and ARP tables look
OK at all times. Entering a manual ARP entry for the PC in the
central station or bouncing IP in the router solves the problem.
CR 13021: SNMP.
SNMP Get Request (45 Objects) from SunNet Mgr fails with
Error - Get Request Too Big. It used to work in 7.71 fix 8 and it
fails with 7.80 fix 5 and up.
CR 12671: Vines.
Running Vines with FRP enabled over sync lines with one side 7
series and the other 8.10 can cause slot resets (parity errors)
in the 7 series router.
CR 12895: Vines.
The Vines client program SEND.EXE does not work on serverless
segments.
CR 10946: IP.
An ip circuit configured dynamically on a demand circuit will not
transition to the UP state until the router is rebooted.
CR 12687: LNM.
In the response to a Request Bridge Status in LNM the router
assigns the MAC address of the ring being queried to the Internal
LAN ID. The MAC address should be the pseudo MAC address assigned
by the user. This causes confusion on the management workstation
and reports the wrong ring speed for the ring that the
workstation is connected.
CR 11623: LNM.
When the Token Ring MAC address and the LNM interface MAC address
have a zero in the last digit then we cannot link to the
Wellfleet from the IBM_LNM station.
CR 12830: IP.
IP Router responds to a UDP echo request with the same DST and
SRC ports as the requesting packet.
CR 12532: DLSw.
When DLSw and LNM are both configured on the same slot either
may fail to operate.
CR 12908: LNM.
PANIC in mib_ent.c at line 1041 can occur after disabling LNM
Interface.
CR 11719: Source Route Bridge.
Running NetBIOS Caching may cause exception vector panic in
sr_nb_process_are as a result of RIF entries being aged while
the same RIF entries are being relearned.
CR 12855: SNMP.
Watchdog expiration slot resets can occur if router receives an
SNMP packet containing a zero len INTEGER_TAG.
CR 9266: ETHernet.
With a simple config of bridging with an enet port and fddi port
running 7.71, if you disable the enet port via TI,
's wfCSMACDEntry.2.instance 2', and then check the interface
operator status (wfifEntry.ifOperStatus), it will toggle between
a 1 and a 3. this instability will also occur if the enet cable
is pulled with the exception that the value returned from
wfifEntry.ifOperStatus will now be toggling between a 1 and a 2.
CR 12782: System.
Improved the debug information recorded in the system log on
occurrences of BB TAG violation slot resets.
CR 12583: E1.
E1 board configured with external clock uses the clock received
from port 1 as its clock source. If port 1 goes down then clock
source switches to port 2. After port 1 returns the clock source
remains with port 2 instead of returning to port 1.
CR 12735: Frame Relay.
In a Bridged Environment where a combination of FDDI, Ethernet
and Frame Relay exist, intermittent TAG VIOLATIONS may occur on
the Frame Relay slot.
CR 11058: Config.
7.80 Router log shows up as slots booting off different router
versions. With SM 1.80 connect to a 7.71 router, go to Config Mgr
in dynamic mode and save the file. Then reboot the router under
7.80, SM displays msgs showing what versions the slots are
booting off of. What will appear in the log, in an alternating
fashion, is the first slot will show "booting off 7.80", the
second slot will be "booting off 7.71", the third slot will be
"booting off 7.80" and the fourth will be "booting off
7.71", and so on.
CR 12336: X.25.
IP RIP advertisements stop on random X.25 PDN circuits after a
reboot.
CR 12541: IPX.
After executing an incorrect ipx ping such as 'ping -IPX 0x1.0'
the slot running ti will either become disconnected but not show
anything in the log as in the case of VME hardware or reset with
a tag violation in the case of the BN or ASN hardware.
CR 12388: PPP.
When the PPP protocol determines that a sync line has gone down,
through either missing echoes or LQR, the LCP will cause the NCPs
to go into a starting state but the
wfPppCircuitEntry.wfPppCircuitState is still up.
CR 12334: OSPF.
If the router is configured to run OSPF NBMA and does not have
Static Neighbor configured it will not have Dynamic Neighbor in
the MIB even if adjacency with the neighbor can be established.
========================= Version 7.80 fix 5 =============================
The image for FRE hardware is: 1478287 Jan 30 11:40 boot.exe
The image for VME & AFN Floppy hardware is: 1504360 Jan 30 14:33 ace.out
The image for AN hardware is: 1297876 Jan 30 11:58 boot.exe
The image for IN & AFN Flash hardware is 1377302 Jan 30 15:25 boot.exe
___________________________________________________________________________
CR 9999: IPX.
Loss of connectivity for IPX hosts that use inter-slot routing
can occur. This usually happens after an IPX interface goes
down/up or End Station Support learns a new RIF for a given
IPX host.
This problem was introduced as a side effect of the repair
documented below in fix/7.80/3 in CR 9999.
CR 12647: IPX.
In IPX networks with large numbers of end stations with many
clients attempting to open connections to one server a system
task and its associated memory can be lost.
CR 12589: PPP.
All bridge traffic is discarded on PPP link between Wellfleet
and Network Systems router/bridge.
CR 12575: Vines.
Zero hop count NetRPC search and search-all broadcasts are
forwarded even if ARP is not enabled on the interface. This can
result in broadcasts storms if a local StreetTalk server goes down.
CR 12555: LLC.
After having opened and closed around 270 LLC sessions through a
router, it is no longer possible to establish new sessions. The
typical error messages in the log are:
933: 01/20/95 12:12:40.271 DEBUG SLOT 2 LLC Code: 11
Context not found or unavailable.
934: 01/20/95 12:12:40.271 DEBUG SLOT 2 LLC Code: 11
LLC ERROR: No Context Available
CR 11932: OSPF.
During a dynamic configuration, the router may BUS ERROR when
adding or deleting area 0 when other areas already exist.
CR 12476: Packet Capture.
Unable to restart packet capture if the first PCAP file is too
large. To reproduce problem:
Calculate the maximum amount of memory allowed for Packet Capture
on a slot. You will be able to successfully run this capture
once, if you stop the capture when the trace is full, and attempt
to restart you get the following warning message for PCAP:
"wfPktCaptureBufSize for line xxx101 invalid"
The wfPktCaptureControl is set to 1 (start), but
wfPktCaptureCapture is set to 2 (stopped). It seems that the
memory resources are being checked but memory resources allocated
for the previous PCAP file are not being considered for the
PCAP file overwrite.
CR 12358: LNM.
Stations cannot insert onto a ring on which an ANts is the only
available Ring Parameter Server. Ring station sends out a Request
Initialization to the RPS functional address C00000000002, and
the frame is returned from the ring with the AR/FC bits set,
indicating an RPS is available. The AN does not return an answer
to this request (it sees them as illegally formatted), and after
3 retries the ring station exits from the ring.
CR 12451: LNM.
Multiple out of memory slot resets can occur while using LNM on
heavily loaded rings.
CR 12423: IP.
IP router allows various types of invalid IP subnet masks. The
IP interface should not come up when an invalid IP subnet mask
is configured.
CR 12436: Vines.
Vines internal network table gets corrupted in a Vines network
with redundant links. This causes servers behind a router to
become unreachable even though the MIB has a valid metric for
the route.
CR 12409: OSPF.
OSPF problem when 2 wf routers are configured as follows:
------- Area A1 ------- Area A2
| R1 |-----------| R2 |--------------
------- Network N1 ------- Network N2
When both routers come up for the first time and establish a full
adjacency network N2 is advertised into A1 by R2 as a summary
link, installed as such in R1's lsdb and also appears in R1's
ip routing table.
At this point R1 is rebooted. When it comes up and establishes
a full adjacency with R2 it correctly installs N2 as a summary
link in the lsdb but N2 is now missing from R1's routing table.
CR 11031: Vines.
When Vines Fragmentation Protocol (FRP) is disabled on a WAN
interface, a bus error panic will occur when the sync interface
is disabled and enabled.
CR 12260: Netboot.
Netboot does not work when bofl is configured on a sync line.
CR 11557: OSPF.
OSPF routes learned over a virtual link are not processed
properly on the backbone router that is receiving them in certain
(large routing table) topologies due to a non-recoverable
hogs bufs situation.
CR 12376: IP.
Arp Request is discarded if the source IP address is not in the
same subnet.
CR 12373: SNMP.
Snmp packets containing a get request for 24 or more objects
causes various problems (usually ASN1parse errors).
CR 11433: Token Ring.
The ring data rate is incorrect in the 8502 frame sent from the
router to the IBM Lan Network Manager. Even though the ring is
configured for 4Mbps it still sends the ring data rate as 16Mbps.
CR 10842: System.
A VME router fails to boot properly with very large config files.
Some slots are unable to receive the config info.
CR 12086: Circuits.
Enabling Hardware Filters in ESAF 5531-2 Link Modules caused the
interface to hung in the initialization state if it was
configured via install.bat.
CR 11934: IP.
Under very heady loads, routing information may not be properly
maintained after IP on another slot resets.
CR 10722: IP.
IP connectivity can be lost while aging hosts. This is due to the
routing table getting corrupted if no buffers are available while
Host aging is happening.
CR 10520: Source Route Bridge.
A source route packet with length field bits set to 3 (4472)
that originates on a Token Ring segment will have the length
field decreased to 2 (2072) when it crosses an FDDI ring.
CR 12127: Token Ring.
The Token Ring interface on an AN will continuously reset with a
timeout error on a network that is very busy. Some example log
messages are;
Connector MAU1 Cmd (0xa) time-out (s=008c)
(a=0000 0000 0000 0000).
Connector MAU1 stop... env->phy_addr = 04000000.
========================= Version 7.80 fix 4 =============================
The image for FRE hardware is: 1479172 Dec 30 17:11 boot.exe
The image for VME & AFN Floppy hardware is: 1504240 Jan 4 16:08 ace.out
The image for AN hardware is: 1291272 Dec 30 17:41 boot.exe
The image for IN & AFN Flash hardware is: 1377702 Dec 30 17:49 boot.exe
___________________________________________________________________________
CR 12134: OSPF.
OSPF does not properly notify IP when an LSU is received with a
change of MASK.
CR 11376: LNM.
LNM can cause 'out of memory' slot resets when receiving excessive
non-isolating errors.
CR 11374: DLSw.
When DLS is terminated at the same port that SRB uses for the SNA
client to continue its communication path to the host, DLS enters
invalid state.
CR 10870: IP.
IP router does not update ARP Cache according to RFC. RFC 826
suggests the desired algorithm for receipt of an ARP request is
for a receiver (even though he may not be the target) to update his
ARP Cache when a request is received containing a new source MAC
address for an entry that already exists. The IP router does not
update the ARP cache for existing entry upon receiving ARP request
containing new source MAC Address if the ARP destination is not for
the local interface.
CR 11845: Vines.
Vines Routing Table Manager uses excessive memory storing remote
end-station information gratuitously.
CR 11866: Vines.
Vines router permanently looses local memory after circuit goes
down/up.
CR None: Spanning Tree Bridge.
Transparent bridge spanning tree tunneled over token ring does not
recognize 5 series BPDU's because of the 8103 protocol id field.
Likewise, the 5 series does not recognize the 7 series BPDU's
because of the 0000 protocol id field.
CR 11814: PPP.
OSI over PPP may not be established; The OSI NCP remains in closed
state. This can happen to any NCP, not just OSI. The problem will
appear if the remote router sends a PPP Protocol Reject packet to
WF in response to WF sending a PPP Configuration Request packet.
RFC 1548 specifies that the NCP should remain in whatever state it
is in when it receives the Protocol Reject, and that the NCP should
stop sending out whatever is causing the peer router to send back
Protocol Rejects. Instead, WF router is generating a closed event
and transitioning to Closed state. This prevents us from
establishing a connection if/when the remote router ever does
send a Connection Request.
CR 11977: Vines.
Running Vines over Source Route Bridge using End Station support
may result in RIFs being changed too often causing Vines servers
to go into suppression.
CR 11190: OSPF.
When OSPF is configured with BGP3 to connect multiple ASs, BGP3
learned routes can become unreachable within OSPF for no apparent
reason.
CR 11839: IPX.
Directed broadcast diag packets are not being forwarded by the IPX
router. These are packets with an IPX socket number of 456 or 7777.
These two sockets are used for IPX ping when the IPX destination
node is not a broadcast, in the case when the destination node is
a broadcast (FFFFFFFF) the router should forward the packet to the
appropriate interface and node if one exists. If the network is
known but not the node the packet should be broadcast on that
known network.
CR 11857: System.
An orphan buffer error can appear in the log with the source gate
ID value in the 0x400 range (I.E. 0x401, 0x402, 0x403 etc).
CR 10557: AppleTalk.
Slot routing AppleTalk can experience Tag Violation reset upon
receipt of illegal NBP tuples.
CR 11529: OSPF.
OSPF no longer advertises attached external interface after CSMACD
bounces. External interface is up and appears in the routing table
but is not found in the LSDB. This occurs after the CSMACD has
bounced (seen in the log). All external routes learned over that
external interface are no longer reachable from the OSPF network.
CR 11638: IP.
The propagation of a zero subnet over the same network/different
IP subnet will not get installed into the IP routing table. This
failure can be seen when the following scenario exists, standard
class b network is sub-netted with a class c mask and a zero subnet
exists within network.
CR 11815: OSI.
OSI connectivity may not be established over Level1 or Level2
PtoP Adjacencies.
CR 11829: IPX.
If the destination network of a SAP entry does not exist in the
routing table, IPX may panic while calculating the nearest server.
CR 11704: X.25
Querying the router for its MIB-II ifTable on an interface configured
for X.25 returns the value 6 for the ifType. The value 6 is
enumerated to ethernet-csmacd in MIB-II.
CR None: System.
Doing a 'get wfKernelEntry.*.
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