Hitachi GR2000 Series Configuration Commands page 185

Table 1-70 Categories of the Control Packets Outputted by Queue 8 or 16
Item No. Control Packet Category Influence if Not Transmitted.
PPP-LCP control Monitors link quality by using echo under the link setting condition. If the echo does not pass
packet through, line quality NG may be detected erroneously.
PPP-NCP control If the control packet negotiating execution of the high-order protocols (IP/IPX/Bridge/MPLS)
packet does not pass through, no response from the counterpart station may be detected erroneously.
MPLS-LDP Hello Possibility exists that the LSP session may be cut off.
packet
MPLS-LDP Possibility exists that the LSP session may be cut off.
KeepAlive packet
ARP request/ Possibility exists that the communication becomes impossible because ARP cannot be solved.
response frame
RIP packet Possibility exists that the communication becomes impossible because the route information is
not distributed.
OSPF packet Possibility exists that the communication becomes impossible because the route information is
not distributed.
BGP packet Possibility exists that the communication becomes impossible because the route information is
not distributed.
TGMP packet Possibility exists that the communication becomes impossible because the multicast
information is not distributed.
PIM packet Possibility exists that the communication becomes impossible because the multicast
information is not distributed.
In addition, in case of WAN line, errors of several percent to 20% may occur
because of the communication band (communication speed for the case of PPP,
the minimum rate assurance value for the case of frame relay (-min_access_rate))
and the transmission packet length. The error grows if the smaller the
communication band, and the longer the transmission packet.
The minimum bandwidth that can be specified is 1050 kbit/s when the line used
is Ethernet. Therefore, set 0% or 11% or more when the line speed of the line
used is 10 Mbit/s. Set 0% or 2% or more when it is 100 Mbit/s. If the line being
used is GR2000-1B or an Ethernet with built in GR2000-2B, a maximum
transmission band of 80 kbit/s is allocated, even if the band is not set in the
queue.
Default:
Range of value:
When WAN circuits are operating, transmission bandwidth (for PPP,
transmission speed, and PVC minimum access rate (
Relay) and output packet length can cause error rates up to 20 percent. Smaller
the bandwidth and longer the output packet length, greater is the possibility of
error.
Default:
Range of value:
Description:
GR2K-GA-0014
Ver. 07-02
0
0-100
0
0-100
Allocates bandwidth to queue 1 through specified queue
number equally. Sets only when queue mode is
equal_bandwidth. Invalid when queue mode is -priority,
-round_robin, -bandwidth, -bandwidth_kbps or
-bandwidth_traffic.
Filtering/QoS Information
) for Frame
min_access_rate
1-143