Avaya BayRS Version 15.1.0.0 Notice download pdf (Page 52)

Release Notes for BayRS Version 15.1.0.0

308663-15.1 Rev 00

DLSw — SDLC Fast and Slow Poll Timer Defaults

If you have a router performing SDLC to LLC conversion, and you use the default

values for the SDLC parameters Fast Poll Timer and Slow Poll Timer, SDLC

controller performance is degraded. To avoid this problem, change the Fast Poll

Timer to 200 and the Slow Poll Timer to 400. Changing these settings improves

performance for both single- and dual-switch DLSw configurations in which the

router acts as an SDLC primary device. Depending on the number of SDLC

controllers you are supporting, you may need to increase or decrease the numbers

to improve controller response time and router performance.

DLSw/APPN Boundary Port Use with AS400s and Others

Do not configure any explicit APPN adjacent link stations on the DLSw/APPN

boundary (VCCT) port, unless you are certain that the adjacent link station (for

example, an AS400) will not attempt to connect to the APPN node. Otherwise, the

DLSw/APPN boundary (VCCT) function fails to operate correctly and the router

might restart.

DSQMS

The following limitations exist for DSQMS services in BayRS:

• Queue starvation can occur despite priority-time-quantum settings. Queues

with the same priority level and priority-time-quantum settings may

nevertheless experience queue starvation if one of the queues is

bandwidth-heavy.

To address this condition you can configure traffic policing for the

bandwidth-heavy traffic flow to an acceptable rate for its assigned DSQMS

Priority Queue. Configure traffic policing before the DSQMS outbound

interface to control UDP as well as TCP flows.

• DSQMS is not supported with Protocol Priority Queuing (PPQ)..

DVMRP Use with Interfaces with More than One IP Address

You cannot use the BayRS Version 15.1.0.0 implementation of Distance Vector

Multicast Routing Protocol (DVMRP) with circuits with multinetted interfaces

(that is, interfaces with more than one IP address).

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Avaya BayRS Version 15.1.0.0 Notice Page 52