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temen2,
dari system yang aku sudah buat seperti pada gambar dibawah, didapat hasil:
1. dua network dapat saling berkomunikasi
2. dua network sama2 dapat konek ke internet
pertanyaan:
1. mengapa pada semua client pc dan pc router selalu request time out
sewaktu melakukan ping ke cisco router?
2. bagaimana caranya agar semua client pc dapat reply sewaktu ping ke
cisco router.
untuk kelengkapan data anallisa berikut ini saya sertakan output
ifconfig, route dan iptables rules
thanks
sigid
-----------------
Layout Jaringan
internet
|
--------|--------
| |
| CISCO ROUTER |
| |
| 192.9.18.254 |
-----------------
|
|
- ------------------------|--------------------------------
| eth4 (192.9.18.109) |
| |
| (192.9.18.8) (192.9.19.254) |
| bond0 PC ROUTER bond1 |
| eth0 eth1 eth2 eth3 |
- ------|------|-------------------------------|-----|-----
| | | |
- ------|------|--- -----|-----|-----
| | | |
| SWITCH | | SWITCH |
| | | |
- --------|-------- --------|--------
| |
client pc's client pc's
Network 192.9.18.0/24 Network 192.9.19.0/24
--------------------
Output ifconfig
bond0 Link encap:Ethernet HWaddr 00:0A:5E:75:A0:32
inet addr:192.9.18.8 Bcast:192.9.18.255 Mask:255.255.255.0
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:20357269 errors:0 dropped:0 overruns:1 frame:0
TX packets:20012684 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2761594142 (2.5 GiB) TX bytes:3147929340 (2.9 GiB)
bond1 Link encap:Ethernet HWaddr 00:0A:5E:75:9F:C9
inet addr:192.9.19.254 Bcast:192.9.19.255 Mask:255.255.255.0
inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:19910561 errors:0 dropped:0 overruns:1 frame:0
TX packets:20042034 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3098735212 (2.8 GiB) TX bytes:2706405284 (2.5 GiB)
eth0 Link encap:Ethernet HWaddr 00:0A:5E:75:A0:32
inet6 addr: fe80::20a:5eff:fe75:a032/64 Scope:Link
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:10197285 errors:0 dropped:0 overruns:1 frame:0
TX packets:10024591 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1387234875 (1.2 GiB) TX bytes:1592860308 (1.4 GiB)
Interrupt:19 Base address:0xc800
eth1 Link encap:Ethernet HWaddr 00:0A:5E:75:A0:32
inet6 addr: fe80::20a:5eff:fe75:a032/64 Scope:Link
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:10159985 errors:0 dropped:0 overruns:0 frame:0
TX packets:9988096 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1374359897 (1.2 GiB) TX bytes:1555069446 (1.4 GiB)
Interrupt:17 Base address:0xe400
eth2 Link encap:Ethernet HWaddr 00:0A:5E:75:9F:C9
inet6 addr: fe80::20a:5eff:fe75:9fc9/64 Scope:Link
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:9967764 errors:0 dropped:0 overruns:1 frame:0
TX packets:10032735 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1562746772 (1.4 GiB) TX bytes:1355913827 (1.2 GiB)
Interrupt:18
eth3 Link encap:Ethernet HWaddr 00:0A:5E:75:9F:C9
inet6 addr: fe80::20a:5eff:fe75:9fc9/64 Scope:Link
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:9942799 errors:0 dropped:0 overruns:0 frame:0
TX packets:10009301 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1535988737 (1.4 GiB) TX bytes:1350492180 (1.2 GiB)
Interrupt:21 Base address:0x2c00
eth4 Link encap:Ethernet HWaddr 00:13:D4:4C:F6:C7
inet addr:192.9.18.109 Bcast:192.9.18.255 Mask:255.255.255.0
inet6 addr: fe80::213:d4ff:fe4c:f6c7/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:261283 errors:0 dropped:0 overruns:0 frame:0
TX packets:253428 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:86506417 (82.4 MiB) TX bytes:75491460 (71.9 MiB)
Interrupt:17 Base address:0xc00
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:3350 errors:0 dropped:0 overruns:0 frame:0
TX packets:3350 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2038435 (1.9 MiB) TX bytes:2038435 (1.9 MiB)
--------------------------
Routing Table
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.9.18.0 * 255.255.255.255 UH 0 0 0 eth4
192.9.18.0 * 255.255.255.0 U 0 0 0
bond0
192.9.19.0 * 255.255.255.0 U 0 0 0
bond1
default 192.9.18.254 0.0.0.0 UG 0 0 0 eth4
------------------------
Iptables rules
# Generated by iptables-save v1.3.5 on Tue Oct 10 09:35:10 2006
*nat
:OUTPUT ACCEPT [0:0]
:PREROUTING ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
- -A POSTROUTING -o eth4 -j MASQUERADE
COMMIT
# Completed on Tue Oct 10 09:35:10 2006
# Generated by iptables-save v1.3.5 on Tue Oct 10 09:35:10 2006
*mangle
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
# Completed on Tue Oct 10 09:35:10 2006
# Generated by iptables-save v1.3.5 on Tue Oct 10 09:35:10 2006
*filter
:FORWARD ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
- -A FORWARD -o eth4 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT:
- -A FORWARD -i eth4 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN:
- -A OUTPUT -o eth4 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT:
- -A INPUT -i eth4 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN:
COMMIT
# Completed on Tue Oct 10 09:35:10 2006
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