Installation manual

Part No. T0249-01, Rev A
April, 2002
Known Software Limitations Page 33 of 55
Improper Configuration for LLC-SDLC-Stations - Vanguard 7300,
Vanguard 6400 Series
LLC-SDLC-Station Records in the Second Ethernet Station Table become the
Records of the First Ethernet Station Table if the First Ethernet port record is deleted.
(DRCaa21097) (DRCaa22325)
Workaround: The first work around is not to delete the first Ethernet port. The
second work around is to re-configure the LLC-SDLC-Station Records with the
Ethernet port that has not been deleted.
There is no SET_UP ACK generated for ISDN PRI Voice Calls with
Overlap Sending - Vanguard 6400 and 7300 Series
Overlap Sending/Receiving is not supported by North American switch types
(DMS100, 5ESS, NI-2) (DRCaa22328) (DRCaa22105).
Workaround: When configured for these switches, the attached device or switch
must use Enblock mode only.
Vanguard 7300 Series Call Not Transferred with ALT-Dest set in VST
When placing a call from either an FXS or FXO or E&M to H.323 and the
destination doesn't answer the phone (ALT_DEST_NO_ANSER) or the phone is
busy (ALT_DEST) and the alternate destination is either an FXS or FXO or E&M,
there is no audio. (DRCaa22329)
Workaround: At present, there is no workaround.
Vanguard 7300 Series Large QoS Parameter Values May Disable QoS
Although the QoS Parameter fields can be configured to a maximum of 1000 or
10000 (in case of IP Flow Table Size), this is subject to the node’s RAM availability.
The software checks the node for sufficient RAM to accommodate a QoS parameter
configuration. If the node’s memory size is less than the requirement for the
configuration, the software disables QoS. (DRCaa22432)
Workaround: Add more memory and configure the minimum required parameters
for QoS.
Incorrect Configuration Can Disable QoS Scheduler Feature
Vanguard 7300 Series
The sum of the %BW per custom PHB configured in the custom PHB menu must be
the same as the %BW for custom PHB configured in the Queueing and Scheduling
Profile Parameter. Failing to do so leads to the disabling of the QoS Scheduler
feature. For example, if the %BW for custom PHB in the Queueing and Scheduling
Profile parameter is set to zero, the %BW per custom PHB must all be zero to satisfy
the above condition. (DRCaa22433)
Workaround: At present, there is no workaround.
Vanguard 7300 Series Using the Same TCP Session for Local and
Remote Nodes
If the remote node initiates a call using SoTCP and the local node attempts to make a
call in the reverse direction over the same TCP session, a new session might be
required to make the call. (DRCaa22437)
Workaround: Include in the Mapping Table, all possible IP addresses that might be
used by a remote destination node. For more information, refer to the Serial Protocol
over TCP Manual (Part number T0100-06).