Qtech QSW-3900-24-SFP-DC [32/245] Routing tracert command
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Qtech QSW-3900-24-SFP-DC [32/245] Routing tracert command

Qtech QSW-3900-48-SFP-DC [32/245] Routing tracert command
QTECH Software Configuration Manual
2-31
interface. Display the configuration by show users command.
Configure it in global configuration mode :
login-access-list telnet-limit limit-no
no login-access-list telnet-limit
Example :
! Configure only 2 Telnet users can enter privileged mode
QTECH(config)#login-access-list telnet-limit 2
2.7.6 Routing tracert command
Tracert is used for routing detecting and network examination. Configure it in privileged mode :
tracert [ -u | -c ] [ -p udpport | -f first_ttl | -h maximum_hops | -w time_out ] target_name
Parameter :
-u means sending udp packet,
-c means sending echo packet of icmp. It is defaulted to be -c;
-p udpport : destination interface address for sending udp packet which is in the range of 1 to 65535 and
defaulted to be 62929;
-f first_ttl : initial ttl of sending packet which is in the range of 1 to 255 and defaulted to be 1;
-h maximum_hops : the max ttl of sending packet which is in the range of 1 to 255 and defaulted to be 30;
-w time_out : the overtime of waiting for the response which is in the range of 10 to 60 with the unit of second and
default to be 10 seconds;
target_name : destination host or router address
Example :
! Tracert 192.168.1.2
QTECH#tracert 192.168.1.2
Tracing route to 192.168.1.2 [192.168.1.2]
over a maximum of 30 hops :
1 20 ms <10 ms <10 ms 192.168.0.1
1 20 ms <10 ms 30 ms 192.168.1.2
tracert complete.
2.7.7 Packets rate limit to CPU
Command cpu-car is used to configure cpu rate for receiving packet. This packets can be like IGMP, BPDU,
DHCP etc. Configure it in global configuration mode :
cpu-car target-rate
no cpu-car is used to restore to default cpu rate for receiving packet.
Parameter :
target-rate : cpu rate for receiving packet , which is in the range of 1 to 1000pps and the default rate is 50pps..
Example :
! Configure cpu rate for receiving packet to be 100pps
QTECH(config)#cpu-car 100

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