Avaya BayRS Version 15.7.0.0 Notice download pdf (Page 56)

Release Notes for BayRS Version 15.7.0.0

42 308663-15.7 Rev 00

Protocol Prioritization No Call Filters and TCP Applications

Using a no call filter that applies to any TCP application can cause TCP to

retransmit the filtered packet.

When two routers running a TCP application are connected using a demand line,

and the demand line becomes inactive, the TCP application remains connected.

If a demand line configured with a no call filter goes down, the no call filter drops

the TCP packet that matches the no call filter rule. Because TCP never receives an

acknowledgment that the packet was dropped, the TCP application continues to

retransmit that packet until the connection times out and the application stops

operating.

Adding SDLC Changes Serial Parameter Settings

When you configure SDLC on a serial interface, the router software automatically

changes the values for the following serial parameters:

• Cable type

• Clock source

• Internal clock speed

• Signal mode

Defaults for serial parameters, without SDLC, are listed in Table 17

Note: No call filters are specific to dial services. For additional information

about traffic filters and protocol prioritization, see Configuring Traffic Filters

and Protocol Prioritization.

Table 17. Default Settings for Serial Parameters without SDLC

Parameter Default Setting

cable type null

clock source external

internal clock speed clk64k

signal mode balanced

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 79 80

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Avaya BayRS Version 15.7.0.0 Notice Page 56