作者wst2080 ()
看板Network
标题Re: [问答] traceroute问题
时间Tue Nov 23 08:52:18 2010
实验架构:
┌────┐
Switch ─── R1 ─── R2 ─── R3 ─── R4 ─── R5
└────┘
R1's S0/1 --- R2's S0/0
R2's S0/0 --- R1's S0/1
R2's S0/1 --- R3's S0/0
R2's S0/2 --- R3's S0/2
R3's S0/0 --- R2's S0/1
R3's S0/2 --- R2's S0/2
R3's S1/3 --- R4's S0/2
R3's S0/1 --- R4's S0/0
R4's S0/2 --- R3's S1/3
R4's S0/0 --- R3's S0/1
R4's S0/1 --- R5's S0/0
R5's S0/0 --- R4's S0/1
Swtich: 1.1.1.10
R1's LAN: 1.1.1.1
R1's S0/1: 12.1.1.1
R2's S0/0: 12.1.1.2
R2's S0/1: 23.1.1.2
R2's S0/2: 32.1.1.2
R3's S0/0: 23.1.1.3
R3's S0/2: 32.1.1.3
R3's S1/3: 34.1.1.3
R3's S0/1: 43.1.1.3
R4's S0/2: 34.1.1.4
R4's S0/0: 43.1.1.4
R4's S0/1: 45.1.1.4
R5's S0/0: 45.1.1.5
R2 上的路由表
R2#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
34.0.0.0/24 is subnetted, 1 subnets
D 34.1.1.0 [90/21024000] via 32.1.1.3, 00:13:58, Serial0/2
[90/21024000] via 23.1.1.3, 00:13:58, Serial0/1
1.0.0.0/24 is subnetted, 1 subnets
D 1.1.1.0 [90/20537600] via 12.1.1.1, 00:15:08, Serial0/0
32.0.0.0/24 is subnetted, 1 subnets
C 32.1.1.0 is directly connected, Serial0/2
23.0.0.0/24 is subnetted, 1 subnets
C 23.1.1.0 is directly connected, Serial0/1
43.0.0.0/24 is subnetted, 1 subnets
D 43.1.1.0 [90/21024000] via 23.1.1.3, 00:13:52, Serial0/1
[90/21024000] via 32.1.1.3, 00:13:52, Serial0/2
12.0.0.0/24 is subnetted, 1 subnets
C 12.1.1.0 is directly connected, Serial0/0
45.0.0.0/24 is subnetted, 1 subnets
D 45.1.1.0 [90/21536000] via 32.1.1.3, 00:12:58, Serial0/2
[90/21536000] via 23.1.1.3, 00:12:58, Serial0/1
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^负载均衡
第一次测试结果:
Switch:
Switch
#traceroute 45.1.1.5
Type escape sequence to abort.
Tracing the route to 45.1.1.5
1 1.1.1.1 5 msec 5 msec 5 msec
2 12.1.1.2 27 msec 18 msec 18 msec
3 32.1.1.3 29 msec 28 msec 32 msec
4 43.1.1.4 45 msec 47 msec 44 msec
5 45.1.1.5 30 msec
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=1.1.1.1 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=1.1.1.1 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=1.1.1.1 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=12.1.1.2 (VLAN1), d=1.1.45.1.1.5 58 msec1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=12.1.1.2 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=12.1.1.2 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=32.1.1.3 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=32.1.1.3 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=32.1.1.3 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=43.1.1.4 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=43.1.1.4 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=43.1.1.4 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:25: IP: s=45.1.1.5 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:25: ICMP: dst (1.1.1.10) port unreachable rcv from 45.1.1.5
00:51:25: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending * 58 msec
Switch#
00:51:28: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
00:51:28: IP: s=45.1.1.5 (VLAN1), d=1.1.1.10, len 56, rcvd 1
00:51:28: ICMP: dst (1.1.1.10) port unreachable rcv from 45.1.1.5
R1:
*Mar 1 00:49:30.204: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:30.208: IP: tableid=0, s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), routed via FIB
*Mar 1 00:49:30.208: IP: s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), len 56, sending
*Mar 1 00:49:30.213: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:30.213: IP: tableid=0, s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), routed via FIB
*Mar 1 00:49:30.213: IP: s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), len 56, sending
*Mar 1 00:49:30.217: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:30.221: IP: tableid=0, s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), routed via FIB
*Mar 1 00:49:30.221: IP: s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), len 56, sending
R2:
*Mar 1 00:49:13.737: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:13.737: IP: s=12.1.1.2 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:49:13.761: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:13.761: IP: s=12.1.1.2 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:49:13.781: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:13.781: IP: s=12.1.1.2 (local), d=1.1.1.10 (Serial0/0), len 56, sending
R3:
*Mar 1 00:47:41.126: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:47:41.126: IP: tableid=0, s=32.1.1.3 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:47:41.126: IP: s=32.1.1.3 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:47:41.154: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:47:41.158: IP: tableid=0, s=32.1.1.3 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:47:41.158: IP: s=32.1.1.3 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:47:41.186: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:47:41.186: IP: tableid=0, s=32.1.1.3 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:47:41.186: IP: s=32.1.1.3 (local), d=1.1.1.10 (Serial0/0), len 56, sending
R4:
*Mar 1 00:49:53.639: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:53.639: IP: tableid=0, s=43.1.1.4 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:49:53.639: IP: s=43.1.1.4 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:49:53.683: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:53.683: IP: tableid=0, s=43.1.1.4 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:49:53.683: IP: s=43.1.1.4 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:49:53.731: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:49:53.731: IP: tableid=0, s=43.1.1.4 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:49:53.731: IP: s=43.1.1.4 (local), d=1.1.1.10 (Serial0/0), len 56, sending
R5:
*Mar 1 00:49:29.988: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5, len 28, rcvd 0
*Mar 1 00:49:29.988: UDP: rcvd src=1.1.1.10(38975), dst=45.1.1.5(33446), length=8
*Mar 1 00:49:29.988: ICMP: dst (45.1.1.5) port unreachable sent to 1.1.1.10
*Mar 1 00:49:29.992: IP: tableid=0, s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:49:29.992: IP: s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:49:30.048: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5, len 28, rcvd 0
*Mar 1 00:49:30.048: UDP: rcvd src=1.1.1.10(41908), dst=45.1.1.5(33447), length=8
*Mar 1 00:49:33.049: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5, len 28, rcvd 0
*Mar 1 00:49:33.049: UDP: rcvd src=1.1.1.10(36235), dst=45.1.1.5(33448), length=8
*Mar 1 00:49:33.049: ICMP: dst (45.1.1.5) port unreachable sent to 1.1.1.10
*Mar 1 00:49:33.053: IP: tableid=0, s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), routed via FIB
*Mar 1 00:49:33.053: IP: s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), len 56, sending
第二次测试结果:
Switch
#traceroute 45.1.1.5
Type escape sequence to abort.
Tracing the route to 45.1.1.5
1 1.1.1.1 21 msec 6 msec 8 msec
2 12.1.1.2 21 msec 18 msec 16 msec
3 23.1.1.3 32 msec 31 msec 32 msec
4 34.1.1.4 49 msec 48 msec 44 msec
5 45.1.1.5 60 msec
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=1.1.1.1 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=1.1.1.1 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=1.1.1.1 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=12.1.1.2 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=12.1.1.2 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=12.1.1.2 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=23.1.1.3 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=23.1.1.3 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:34: IP: s=23.1.1.3 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:34: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:35: IP: s=34.1.1.4 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:35: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:35: IP: s=34.1.1.4 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:35: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03: * 35: IP: s=34.1.1.4 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:35: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:35: IP: s=45.1.1.5 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:35: ICMP: dst (1.1.1.10) port unreachable rcv from 45.1.1.5
01:03:35: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending 66 msec
Switch#
01:03:38: IP: s=1.1.1.10 (local), d=45.1.1.5 (VLAN1), len 28, sending
01:03:38: IP: s=45.1.1.5 (VLAN1), d=1.1.1.10, len 56, rcvd 1
01:03:38: ICMP: dst (1.1.1.10) port unreachable rcv from 45.1.1.5
R1:
*Mar 1 01:01:39.837: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:01:39.841: IP: tableid=0, s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), routed via RIB
*Mar 1 01:01:39.841: IP: s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), len 56, sending
*Mar 1 01:01:39.861: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:01:39.861: IP: tableid=0, s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), routed via RIB
*Mar 1 01:01:39.861: IP: s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), len 56, sending
*Mar 1 01:01:39.869: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:01:39.869: IP: tableid=0, s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), routed via RIB
*Mar 1 01:01:39.869: IP: s=1.1.1.1 (local), d=1.1.1.10 (FastEthernet0/1), len 56, sending
*Mar 1 01:01:39.873: IP: tableid=0, s=1.1.1.10 (FastEthernet0/1), d=45.1.1.5 (Serial0/1), routed via RIB
*Mar 1 01:01:39.877: IP: s=1.1.1.10 (FastEthernet0/1), d=45.1.1.5 (Serial0/1), g=12.1.1.2, len 28, forward
R2:
*Mar 1 01:01:23.377: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:01:23.377: IP: s=12.1.1.2 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 01:01:23.393: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:01:23.393: IP: s=12.1.1.2 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 01:01:23.413: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:01:23.413: IP: s=12.1.1.2 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 01:01:23.429: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5 (Serial0/1), g=23.1.1.3, len 28, forward
R3:
*Mar 1 00:59:50.758: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:59:50.758: IP: tableid=0, s=23.1.1.3 (local), d=1.1.1.10 (Serial0/2), routed via RIB
*Mar 1 00:59:50.758: IP: s=23.1.1.3 (local), d=1.1.1.10 (Serial0/2), len 56, sending
*Mar 1 00:59:50.786: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:59:50.786: IP: tableid=0, s=23.1.1.3 (local), d=1.1.1.10 (Serial0/0), routed via RIB
*Mar 1 00:59:50.790: IP: s=23.1.1.3 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 00:59:50.818: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 00:59:50.818: IP: tableid=0, s=23.1.1.3 (local), d=1.1.1.10 (Serial0/2), routed via RIB
*Mar 1 00:59:50.818: IP: s=23.1.1.3 (local), d=1.1.1.10 (Serial0/2), len 56, sending
R4:
*Mar 1 01:02:03.259: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:02:03.259: IP: tableid=0, s=34.1.1.4 (local), d=1.1.1.10 (Serial0/0), routed via RIB
*Mar 1 01:02:03.263: IP: s=34.1.1.4 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 01:02:03.311: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:02:03.315: IP: tableid=0, s=34.1.1.4 (local), d=1.1.1.10 (Serial0/2), routed via RIB
*Mar 1 01:02:03.315: IP: s=34.1.1.4 (local), d=1.1.1.10 (Serial0/2), len 56, sending
*Mar 1 01:02:03.359: ICMP: time exceeded (time to live) sent to 1.1.1.10 (dest was 45.1.1.5)
*Mar 1 01:02:03.359: IP: tableid=0, s=34.1.1.4 (local), d=1.1.1.10 (Serial0/0), routed via RIB
*Mar 1 01:02:03.359: IP: s=34.1.1.4 (local), d=1.1.1.10 (Serial0/0), len 56, sending
R5:
*Mar 1 01:01:39.596: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5, len 28, rcvd 0
*Mar 1 01:01:39.600: UDP: rcvd src=1.1.1.10(42172), dst=45.1.1.5(33446), length=8
*Mar 1 01:01:39.600: ICMP: dst (45.1.1.5) port unreachable sent to 1.1.1.10
*Mar 1 01:01:39.600: IP: tableid=0, s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), routed via RIB
*Mar 1 01:01:39.600: IP: s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), len 56, sending
*Mar 1 01:01:39.656: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5, len 28, rcvd 0
*Mar 1 01:01:39.660: UDP: rcvd src=1.1.1.10(34400), dst=45.1.1.5(33447), length=8
*Mar 1 01:01:42.657: IP: s=1.1.1.10 (Serial0/0), d=45.1.1.5, len 28, rcvd 0
*Mar 1 01:01:42.661: UDP: rcvd src=1.1.1.10(33230), dst=45.1.1.5(33448), length=8
*Mar 1 01:01:42.661: ICMP: dst (45.1.1.5) port unreachable sent to 1.1.1.10
*Mar 1 01:01:42.661: IP: tableid=0, s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), routed via RIB
*Mar 1 01:01:42.661: IP: s=45.1.1.5 (local), d=1.1.1.10 (Serial0/0), len 56, sending
在Switch上头的Log来比较第一次与第二次的不同
1 1.1.1.1 5 msec 5 msec 5 msec 1 1.1.1.1 21 msec 6 msec 8 msec
2 12.1.1.2 27 msec 18 msec 18 msec 2 12.1.1.2 21 msec 18 msec 16 msec
3 32.1.1.3 29 msec 28 msec 32 msec 3 23.1.1.3 32 msec 31 msec 32 msec
4 43.1.1.4 45 msec 47 msec 44 msec 4 34.1.1.4 49 msec 48 msec 44 msec
5 45.1.1.5 30 msec 5 45.1.1.5 60 msec
这时候有发现两次的实验~ 中间有走不同的路径~从R2到R4之间(第三项与第四项)就能发现到不同!!!
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 122.116.248.253
※ 编辑: wst2080 来自: 122.116.248.253 (11/23 08:53)
1F：→ wst2080:记得自己画张图 然後一一的把我po的内容 弄清楚 我想观念 11/23 08:54
2F：→ wst2080:就会开始厘清了 11/23 08:55
3F：推 jeffccc:那你能说一下8460篇的问题吗?因为你这例子traceroute出来 11/23 12:51
4F：→ jeffccc:一定只有一组,因为路径虽不同,但经过的router必相同 11/23 12:53
5F：→ jeffccc:而我的问题是,有可能traceroute每次发送的封包所经router 11/23 12:55
6F：→ jeffccc:并不一样,但他却能决定一条正确的路径,那他要怎解决8460篇 11/23 12:56
7F：→ jeffccc:的那种BUG? 11/23 12:56
8F：→ wst2080:那不算Bug吧~~~ Orz 路径的选择是路由器的路由表决定 11/23 13:07
9F：→ wst2080:又不是你的封包自己去决定!!! 11/23 13:08
10F：推 jeffccc:所以真的会跑出像我所写的那种非正确路径的结果罗? 11/23 13:25
11F：→ wst2080:非正确路径??? 不太懂你要表达的意思~ 11/23 13:33
12F：→ wst2080:经过的Router不一样??? 算了 我懒得去弄线再实验了 11/23 17:00
13F：→ wst2080:感觉我好像在做报告一样 Or 11/23 17:00
14F：→ wst2080: z 11/23 17:00
15F：→ wst2080:我抽空~ 用Packet Tracer 来跑你说的不同Router的NLB好了 11/23 17:04
16F：→ wst2080:懒得动我现在Run的LAB的设备 11/23 17:04
17F：→ wst2080:算了 我还是鸡婆的弄起来了 等一下po结果 11/23 22:00
18F：→ wst2080:po好了... 11/23 22:39