結論：
1、在eNSP中實驗，路由器和CE交換機對於等價路由的默認轉發行為是不同的，
路由器：默認是基於流的轉發形態，更准確的來講，ping兩個不同的下一跳，都是走等價路由的第一個路由，不走第二條路由。
CE交換機：默認就是逐包轉發，即使ping同一個目的ip, 流量也會在不同的下一跳上進行負載分擔。
2、實驗圖如下：
3. 配置說明
R1 上配置默認路由，下一跳是兩個，形成等價路由。
<Huawei>dis curr | inc ip route
ip route-static 0.0.0.0 0.0.0.0 20.0.0.2
ip route-static 0.0.0.0 0.0.0.0 10.0.0.2
<Huawei>
CE交換機上也是相同配置，下一跳是兩個，形成等價路由。
<HUAWEI>dis curr | inc ip route
ip route-static 0.0.0.0 0.0.0.0 10.0.0.1
ip route-static 0.0.0.0 0.0.0.0 20.0.0.1
<HUAWEI>
4. 實驗內容
（1）實驗路由器默認情況下的等價路由。
步驟一、從PC1 ping PC3
步驟二、查看路由器的GE0/0/1, GE0/0/2的端口統計信息，如下，
可以看出，流量只會從GE 0/0/1發送，GE0/0/2沒有發送流量。
<Huawei>dis interface GigabitEthernet 0/0/1
GigabitEthernet0/0/1 current state : UP
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:48:37 UTC-08:00
Description:
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 10.0.0.1/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5489-9806-5754
Last physical up time : 2018-01-14 18:47:29 UTC-08:00
Last physical down time : 2018-01-14 18:46:51 UTC-08:00
Current system time: 2018-01-14 19:29:04-08:00
Hardware address is 5489-9806-5754
Last 300 seconds input rate 0 bytes/sec, 0 packets/sec
Last 300 seconds output rate 0 bytes/sec, 0 packets/sec
Input: 296 bytes, 4 packets
Output: 740 bytes, 10 packets
Input:
Unicast: 4 packets, Multicast: 0 packets
Broadcast: 0 packets
Output:
Unicast: 10 packets, Multicast: 0 packets
Broadcast: 0 packets
Input bandwidth utilization : 0%
Output bandwidth utilization : 0%
<Huawei>
<Huawei>dis interface GigabitEthernet 0/0/2
GigabitEthernet0/0/2 current state : UP
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:48:49 UTC-08:00
Description:
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 20.0.0.1/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5489-9806-5755
Last physical up time : 2018-01-14 18:47:29 UTC-08:00
Last physical down time : 2018-01-14 18:46:51 UTC-08:00
Current system time: 2018-01-14 19:29:07-08:00
Hardware address is 5489-9806-5755
Last 300 seconds input rate 0 bytes/sec, 0 packets/sec
Last 300 seconds output rate 0 bytes/sec, 0 packets/sec
Input: 370 bytes, 5 packets
Output: 0 bytes, 0 packets
Input:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets
Output:
Unicast: 0 packets, Multicast: 0 packets
Broadcast: 0 packets
Input bandwidth utilization : 0%
Output bandwidth utilization : 0%
<Huawei>
步驟三、從PC1 ping PC4, 目的是測試不同的流（PC4的ip和PC3的ip不同），會不會進行負載分擔。
清楚R上的統計信息后，再ping.
步驟四、查看路由器的GE0/0/1, GE0/0/2的端口統計信息，如下，
可以看出，流量只會從GE 0/0/1發送，GE0/0/2沒有發送流量。也就是說，即使是不同的流，也不會進行負載分擔。
<Huawei>dis interface GigabitEthernet 0/0/1
GigabitEthernet0/0/1 current state : UP
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:48:37 UTC-08:00
Description:
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 10.0.0.1/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5489-9806-5754
Last physical up time : 2018-01-14 18:47:29 UTC-08:00
Last physical down time : 2018-01-14 18:46:51 UTC-08:00
Current system time: 2018-01-14 19:33:39-08:00
Hardware address is 5489-9806-5754
Last 300 seconds input rate 0 bytes/sec, 0 packets/sec
Last 300 seconds output rate 0 bytes/sec, 0 packets/sec
Input: 370 bytes, 5 packets
Output: 740 bytes, 10 packets
Input:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets
Output:
Unicast: 10 packets, Multicast: 0 packets
Broadcast: 0 packets
Input bandwidth utilization : 0%
Output bandwidth utilization : 0%
<Huawei>
<Huawei>dis interface GigabitEthernet 0/0/2
GigabitEthernet0/0/2 current state : UP
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:48:49 UTC-08:00
Description:
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 20.0.0.1/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5489-9806-5755
Last physical up time : 2018-01-14 18:47:29 UTC-08:00
Last physical down time : 2018-01-14 18:46:51 UTC-08:00
Current system time: 2018-01-14 19:33:42-08:00
Hardware address is 5489-9806-5755
Last 300 seconds input rate 0 bytes/sec, 0 packets/sec
Last 300 seconds output rate 0 bytes/sec, 0 packets/sec
Input: 370 bytes, 5 packets
Output: 0 bytes, 0 packets
Input:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets
Output:
Unicast: 0 packets, Multicast: 0 packets
Broadcast: 0 packets
Input bandwidth utilization : 0%
Output bandwidth utilization : 0%
<Huawei>
（2）實驗路由器的逐包轉發功能。
路由器的逐包轉發功能，需要配置命令行：
步驟一、從PC1 ping PC3
步驟二、查看路由器的GE0/0/1, GE0/0/2的端口統計信息，如下，
可以看出是每個下一跳端口上都有轉發流量，實現的是負載分擔模式。
<Huawei>dis interface GigabitEthernet 0/0/1
GigabitEthernet0/0/1 current state : UP
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:48:37 UTC-08:00
Description:
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 10.0.0.1/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5489-9806-5754
Last physical up time : 2018-01-14 18:47:29 UTC-08:00
Last physical down time : 2018-01-14 18:46:51 UTC-08:00
Current system time: 2018-01-14 19:20:52-08:00
Hardware address is 5489-9806-5754
Last 300 seconds input rate 0 bytes/sec, 0 packets/sec
Last 300 seconds output rate 0 bytes/sec, 0 packets/sec
Input: 370 bytes, 5 packets
Output: 370 bytes, 5 packets
Input:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets
Output:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets
Input bandwidth utilization : 0%
Output bandwidth utilization : 0%
<Huawei>
<Huawei>dis interface GigabitEthernet 0/0/2
GigabitEthernet0/0/2 current state : UP
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:48:49 UTC-08:00
Description:
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 20.0.0.1/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5489-9806-5755
Last physical up time : 2018-01-14 18:47:29 UTC-08:00
Last physical down time : 2018-01-14 18:46:51 UTC-08:00
Current system time: 2018-01-14 19:20:55-08:00
Hardware address is 5489-9806-5755
Last 300 seconds input rate 0 bytes/sec, 0 packets/sec
Last 300 seconds output rate 0 bytes/sec, 0 packets/sec
Input: 296 bytes, 4 packets
Output: 370 bytes, 5 packets
Input:
Unicast: 4 packets, Multicast: 0 packets
Broadcast: 0 packets
Output:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets
Input bandwidth utilization : 0%
Output bandwidth utilization : 0%
<Huawei>
其實，從上面的GE0/0/2能夠接收到報文的結果看，已經證明CE交換機總是在逐包進行負載分擔。下面再從實驗上驗證。
（3）驗證交換機的默認轉發
步驟一、從PC3 ping PC1. ping 10個包
步驟二、查看CE交換機上的GE 1/0/1， GE1/0/2的統計信息，如下，
可以看出，即使目的ip相同，交換機也會進行逐包的轉發行為。
<HUAWEI>dis interface GE 1/0/1
GE1/0/1 current state : UP (ifindex: 3)
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:50:25
Description:
Route Port,The Maximum Transmit Unit is 1500,The Maximum Frame Length is 9216
Internet Address is 10.0.0.2/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0400-0611-0101
Last physical up time : 2018-01-14 18:50:25
Last physical down time : 2018-01-14 18:46:59
Current system time: 2018-01-14 19:39:46
Statistics last cleared:2018-01-14 19:38:38
Last 300 seconds input rate: 0 bits/sec, 0 packets/sec
Last 300 seconds output rate: 0 bits/sec, 0 packets/sec
Input peak rate 0 bits/sec, Record time: -
Output peak rate 0 bits/sec, Record time: -
Input: 0 bytes, 9 packets
Output: 0 bytes, 5 packets
Input:
Unicast: 9 packets, Multicast: 0 packets
Broadcast: 0 packets, JumboOctets: 0 packets
CRC: 0 packets, Symbol: 0 packets
Overrun: 0 packets, InRangeLength: 0 packets
LongPacket: 0 packets, Jabber: 0 packets, Alignment: 0 packets
Fragment: 0 packets, Undersized Frame: 0 packets
RxPause: 0 packets
Output:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets, JumboOctets: 0 packets
Lost: 0 packets, Overflow: 0 packets, Underrun: 0 packets
System: 0 packets, Overruns: 0 packets
TxPause: 0 packets
Last 300 seconds input utility rate: 0.00%
Last 300 seconds output utility rate: 0.00%
<HUAWEI>
<HUAWEI>dis interface GE 1/0/2
GE1/0/2 current state : UP (ifindex: 4)
Line protocol current state : UP
Last line protocol up time : 2018-01-14 18:50:25
Description:
Route Port,The Maximum Transmit Unit is 1500,The Maximum Frame Length is 9216
Internet Address is 20.0.0.2/24
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0400-0611-0102
Last physical up time : 2018-01-14 18:50:25
Last physical down time : 2018-01-14 18:46:59
Current system time: 2018-01-14 19:39:53
Statistics last cleared:2018-01-14 19:38:38
Last 300 seconds input rate: 0 bits/sec, 0 packets/sec
Last 300 seconds output rate: 0 bits/sec, 0 packets/sec
Input peak rate 0 bits/sec, Record time: -
Output peak rate 0 bits/sec, Record time: -
Input: 0 bytes, 0 packets
Output: 0 bytes, 5 packets
Input:
Unicast: 0 packets, Multicast: 0 packets
Broadcast: 0 packets, JumboOctets: 0 packets
CRC: 0 packets, Symbol: 0 packets
Overrun: 0 packets, InRangeLength: 0 packets
LongPacket: 0 packets, Jabber: 0 packets, Alignment: 0 packets
Fragment: 0 packets, Undersized Frame: 0 packets
RxPause: 0 packets
Output:
Unicast: 5 packets, Multicast: 0 packets
Broadcast: 0 packets, JumboOctets: 0 packets
Lost: 0 packets, Overflow: 0 packets, Underrun: 0 packets
System: 0 packets, Overruns: 0 packets
TxPause: 0 packets
Last 300 seconds input utility rate: 0.00%
Last 300 seconds output utility rate: 0.00%
<HUAWEI>