Re: policy routing
Hi again,
It works thanks a lot but, next hop did not make any sense
to sending packets. I cannot get traceroute response from
that cisco router when I trace to a foreign IP. Traces
starts to print asterisk after that next-hop.
Packets are sending by dialup terminals (at the and of the
FIGURE below). Cisco routers on the way have their own
different "default gateway"s but "next-hop" policies sends
packets to linux. Also linux sends packets to 7206
(212.174.112.18, top of the FIGURE) by iproute settings.
7206 can distribute local packets but it cannot send other
packets to Internet.
--------------------- LINUX SETTINGS
--------------------------
test:~#
test:~# uname -a
Linux test 2.2.18 #1 Wed Feb 14 18:21:06 EET 2001 i686
unknown
test:~#
test:~# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:2288626 errors:0 dropped:0 overruns:0
frame:0
TX packets:2288626 errors:0 dropped:0 overruns:0
carrier:0
Collisions:0
eth0 Link encap:Ethernet HWaddr 00:A0:24:EA:16:EF
inet addr:212.133.146.194 Bcast:212.133.146.195
Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:699895 errors:0 dropped:0 overruns:0
frame:0
TX packets:629786 errors:0 dropped:0 overruns:0
carrier:0
collisions:441 txqueuelen:100
Interrupt:4 Base address:0xd800
eth1 Link encap:Ethernet HWaddr 00:60:08:6A:3B:D1
inet addr:212.174.112.31 Bcast:212.174.112.255
Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5954490 errors:0 dropped:0 overruns:0
frame:0
TX packets:5848790 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:100
Interrupt:7 Base address:0xd000
test:~#
test:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric
Ref Use Iface
212.133.128.28 212.174.112.18 255.255.255.255 UGH 1
0 0 eth1
212.133.146.192 0.0.0.0 255.255.255.252 U 0
0 0 eth0
212.174.232.0 212.133.146.193 255.255.255.0 UG 0
0 0 eth0
212.174.112.0 0.0.0.0 255.255.255.0 U 0
0 0 eth1
0.0.0.0 212.133.146.193 0.0.0.0 UG 0
0 0 eth0
test:~#
test:~#
test:~#
test:~# ip route add default via 212.174.112.18 proto static
table 5
test:~# ip rule add from 212.174.232.0/24 to 0/0 lookup 5
priority 999
test:~# ip route flush cache
test:~#
test:~#
---------------- SIMPLE SCHEME OF NETWORK
--------------------
FIGURE :
Internet
^
|
|
-----------------------
| |
| |
| Cisco7206 |
| |
| 212.174.112.18 |
-----------------------
|
|
eth
|
|
=======================
# 212.174.112.31 #
# #
# DEBIAN 2.2 #
# #
# 212.133.146.194 #
=======================
|
|
eth
|
|
-----------------------
| 212.133.146.193 |
| |
| Cisco7600 |---> Internet
| |
| serial |
-----------------------
|
|
Leased Line
|
|
-----------------------
| serial |
| |
| Cisco2600 |---> Internet
| |
| 213.186.131.94 |
-----------------------
|
|
eth
|
|
-----------------------
| 213.186.131.89 |
| |
| Cisco2511 |
| |
| Async connections. |
-----------------------
| | | | | | | | | | | |
| | | | | | | | | | | |
dial-up pool (212.174.232.0/24)
-------- TRACEROUTE TESTS FROM DIALUP TERMINALS ---------
C:\WINDOWS>tracert -d 212.174.112.13
Tracing route to 212.174.112.13 over a maximum of 30 hops
1 244 ms 240 ms 238 ms 213.186.131.89
2 224 ms 234 ms 242 ms 213.186.131.94
3 250 ms 238 ms 244 ms 212.133.146.85
4 254 ms 268 ms 268 ms 212.133.146.242
5 254 ms 260 ms 253 ms 212.133.146.194
6 255 ms 238 ms 275 ms 212.174.112.18
7 385 ms 358 ms 331 ms 212.174.112.13
Trace complete.
C:\WINDOWS>
C:\WINDOWS>tracert -d 12.1.1.1
Tracing route to 12.1.1.1 over a maximum of 30 hops
1 237 ms 226 ms 238 ms 213.186.131.89
2 226 ms 237 ms 238 ms 213.186.131.94
3 255 ms 239 ms 238 ms 212.133.146.85
4 245 ms 242 ms 241 ms 212.133.146.242
5 252 ms 291 ms 248 ms 212.133.146.194
6 257 ms 240 ms 263 ms 212.174.112.18
7 * * * Request timed out.
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 ^C
C:\WINDOWS>
Cenk Hasirlioglu
Reply to: