Motorola BSR 2000, Configuration And Management Manual

Page: 205 / 650

Release 1.0 Configuring the CMTS
526360-001-00 Rev. B MGBI 6-19
2. Use the arp command in Interface configuration mode to specify the type of ARP
packet that is used on the BSR 2000:
MOT (config-if)#
arp [ arpa | snap ]
where:
arpa is entered for the standard ARP protocol.
snap is entered for the IEEE 802.3 usage of ARP.
The ARP timeout feature is used to prevent unnecessary flooding of traffic over the
cable network. ARP resolution requests are terminated after a defined interval when
attempts to resolve addressing information, for a device entry in the ARP cache table.
3. The ARP cache table expiration value is disabled by default. Use the arp timeout
command in Interface Configuration mode to set the ARP cache table expiration
value:
MOT (config-if)#
arp timeout <
1-6000
>
where:
1-6000
is the expiration value in minutes.
If you want to return to the default ARP timeout condition, use the no arp timeout
command in Interface Configuration mode:
MOT (config-if)#
no arp timeout
Configuring a DOCSIS 2.0 Upstream Logical
Channel
DOCSIS 2.0 increases physical upstream channel performance. It increases upstream
channel capacity and increases overall system tolerance to noise. The benefit of this is
improved spectral efficiency for the HFC network.
About DOCSIS 2.0
DOCSIS 2.0 capabilities include:
■
Advanced-Time Division Multiple Access (A-TDMA) encoding
■
Synchronous Code Division Multiple Access (S-CDMA) encoding
■
Higher symbol rates (5.12 MSym/sec - 6.4 MHz wide channel)
■
Higher order modulations