5 confirming the filtering function, 1 confirmation during operation, 5 confirming the filtering function -8 – Hitachi GR2000 Series User Manual
Page 108: 1 confirmation during operation -8, Figure 5-16. result of t
Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview
5-8
GR2K-GA-0015
Ver. 07-02
5.2.3
Confirming the route to relevant destination address
Execute a traceroute command and confirm the repeater station between the
interface of the router connected to an IPv4 network and the router used as a
communication peer.
Figure 5-16 Result of traceroute Command
5.2.4
Confirming the ARP Information with Neighbor Device
After an IPv4 address is set to the line of the router, connected to an IPv4 network, or
the port in a line, execute a show ip arp command and confirm whether the address
resolution between the router and the adjacent router is performed (ARP entry
information exists). See Subsection 7.5.1, “Communication cannot be done or
communication is disconnected” when no address resolution is performed.
5.2.5
Confirming the filtering function
The contents of confirmation when a filtering function is used in the router are as
described below.
5.2.5.1
Confirmation during operation
(a) Confirmation of statistical information
Execute a show filter-flow command to display IP flow statistical information and
confirm the number of discarded packets. If the number of discarded packets is
large, packets may be discarded in the communication part where they must not
be discarded. Confirm the current operational state of the network.
Figure 5-17 Display of discarded packet count by filtering
> traceroute 192.168.0.1 numeric
traceroute to 192.168.0.1 (192.168.0.1), 30 hops max, 40 byte packets
1 192.168.2.101 0.612 ms 0.541 ms 0.532 ms
2 192.168.1.51 0.905 ms 0.816 ms 0.807 ms
3 192.168.0.1 1.325 ms 1.236 ms 1.227 ms
>
> show filter-flow interface tokyo detail
<Filter List No.>: 1
Using Interface:tokyo1/in
source ip :170.10.11.21 -170.10.11.30
forward packets : 461
<Filter List No.>: 2
Using Interface:tokyo1/in
drop packets : 50121
<Filter List No.>: 1
Using Interface:tokyo4/out
source ip :170.10.12.1 -170.10.12.254
forward packets : 3
[Omitted hereinafter.]
>