Inalp Networks SmartWare Release 2.10, Руководство по настройке программного обеспечения

Страница: 145 / 357

Serial Port Configuration 145
SN(src)[local-d~]# source class default
…
Step 4
The serial interface settings are configured.
SN(cfg)# port serial 0 0
SN(prt-ser)[0/0]# shutdown
SN(prt-ser)[0/0]# encapsulation framerelay
SN(prt-ser)[0/0]# hardware-port x21
SN(prt-ser)[0/0]# port-type dte
…
Step 5
The Frame Relay configuration is done next. Therefore we have to change to the Frame Relay
configuration mode. We use the service-policy profile defined above to give voice priority over data.
SN(prt-ser)[0/0]# framerelay
SN(frm-rel)[0/0]# lmi-type ansi
SN(frm-rel)[0/0]# keepalive 20
SN(frm-rel)[0/0]# use profile service-policy VoicePrio out
…
Step 6
The introduced PVCs need to be configured. We enable fragmentation for PVC 1. The voice uses
codec G.723 at a packet size of 30ms. Therefore the minimum fragment size must be 66 Bytes. Setting
the fragment size to 300 (Bytes) introduces an additional delay of at most 4.7ms (300 * 8 / 512k) but
does not cause to much fragmentation overhead on large data packets.
SN(frm-rel)[0/0]# pvc 1
SN(pvc)[1]# encapsulation rfc1490
SN(pvc)[1]# fragment 300
SN(pvc)[1]# bind interface external router
SN(pvc)[1]# pvc 2
SN(pvc)[2]# encapsulation rfc1490
SN(pvc)[2]# bind interface internal router
…
Step 7
Finally we check that the Frame Relay settings are correct.
SN(frm-rel)[0/0]# show framerelay
Framerelay Configuration:
Port
LMI-Type Keepalive Fragmentation
----------------------------------------------------------
serial 0 0 0
ansi 20 300
PVC Configuration:
Port
DLCI State Fragment Encaps Binding
--------------------------------------------------------------
serial 0 0 0
1 close disabled rfc1490 external@router
serial 0 0 0 2 close disabled rfc1490 internal@router
Software Configuration Guide Release 2.10, Revision 1.00