问

再次提问：MSR2600跑不满百兆带宽。

2018-07-16提问

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zhiliao_D2V2e

zhiliao_D2V2e 零段

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问题描述：

MSR2600跑不满百兆带宽。

中国电信百兆带宽，接到G0/0接口，G0/0接口强制百兆全双工（如果不强制百兆全双工，无论是处于auto状态还是强制千兆状态G0/0口都无法up），结果跑下来Speedtest测速只有二三十兆，跑迅雷能到七十几兆，我换用其它路由器都能跑出来九十几Mbps的数据，换了多个测速方式均如此。所有测试路由器均开启了NAT功能，但是也不至于跑不满百兆啊！损失了二十兆去哪儿了？

我并没有做带宽限制，换了另一个WAN口也是这样。

按照前面提问的解释，我将WAN口和LAN口的mtu都改成1200，mss都改为1024，同时又换了成品网线（换了两种不同的成品网线），将LAN口（G0/6）也强制百兆全双工，还是最高只能跑到七十多兆。

这究竟是什么原因造成的？

同时测试了WAN口和LAN口的错误，发现WAN口上行有大量错误，网线都换了，为什么还会有大量不断增长的错误？为什么别的几个路由器（两个华为的，一个TP的）都可以跑满100M而MSR2600就不行？

以下是LAN口和WAN口信息：

<H3C>dis cu
#
version 5.20, Release 2516P19
#
sysname H3C
#
password-control enable
undo password-control aging enable
undo password-control history enable
password-control length 6
password-control login-attempt 3 exceed lock-time 10
password-control password update interval 0
password-control login idle-time 0
password-control complexity user-name check
#
domain default enable system
#
dns proxy enable
#
dar p2p signature-file flash:/p2p_default.mtd
#
ndp enable
#
ntdp enable
#
cluster enable
#
port-security enable
#
password-recovery enable
#
vlan 1
#
domain system
access-limit disable
state active
idle-cut disable
self-service-url disable
#
dhcp server ip-pool vlan1 extended
network ip range 192.168.1.2 192.168.1.254
network mask 255.255.255.0
gateway-list 192.168.1.1
dns-list 192.168.1.1
#
user-group system
group-attribute allow-guest
#
local-user admin
authorization-attribute level 3
service-type telnet
service-type web
#
cwmp
undo cwmp enable
#
interface Aux0
async mode flow
link-protocol ppp
#
interface Cellular0/0
async mode protocol
link-protocol ppp
tcp mss 1024
#
interface NULL0
#
interface Vlan-interface1
mtu 1200
ip address 192.168.1.1 255.255.255.0
tcp mss 1024
dhcp server apply ip-pool vlan1
ip flow-ordering internal
#
interface GigabitEthernet0/0
port link-mode route
nat outbound
mtu 1200
duplex full
speed 100
tcp mss 1024
ip address dhcp-alloc
arp send-gratuitous-arp interval 2000
ip flow-ordering internal
#
interface GigabitEthernet0/1
port link-mode route
tcp mss 1024
ip flow-ordering internal
#
interface GigabitEthernet0/2
port link-mode bridge
#
interface GigabitEthernet0/3
port link-mode bridge
#
interface GigabitEthernet0/4
port link-mode bridge
#
interface GigabitEthernet0/5
port link-mode bridge
#
interface GigabitEthernet0/6
port link-mode bridge
speed 100
duplex full
#
interface GigabitEthernet0/7
port link-mode bridge
#
interface GigabitEthernet0/8
port link-mode bridge
#
interface GigabitEthernet0/9
port link-mode bridge
#
dhcp enable
#
nms primary monitor-interface GigabitEthernet0/0
#
load xml-configuration
#
load tr069-configuration
#
user-interface tty 12
user-interface aux 0
user-interface vty 0 4
authentication-mode scheme
#
return

<H3C>display interface g0/0
GigabitEthernet0/0 current state: UP
Line protocol current state: UP
Description: GigabitEthernet0/0 Interface
The Maximum Transmit Unit is 1200
Internet Address is ***.***.***.***/20, acquired via DHCP
IP Packet Frame Type: PKTFMT_ETHNT_2,
IPv6 Packet Frame Type: PKTFMT_ETHNT_2,
Media type is twisted pair, loopback not set, promiscuous mode not set
100Mb/s, Full-duplex, link type is force link
Output flow-control is disabled, input flow-control is disabled
Output queue : (Urgent queuing : Size/Length/Discards) 0/100/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards) 0/75/0
Last clearing of counters: 00:03:47 Tue 01/01/2013
   Last 300 seconds input rate 5001376.00 bytes/sec, 40011008 bits/sec, 4853.38
packets/sec
   Last 300 seconds output rate 214890.04 bytes/sec, 1719120 bits/sec, 3181.73 p
ackets/sec
    Input: 1767895 packets, 1810281963 bytes, 1767895 buffers
           126 broadcasts, 564 multicasts, 0 pauses
           139019 errors, 104526 runts, 0 giants
           34493 crc, 0 align errors, 0 overruns
           0 dribbles, 0 drops, 0 no buffers
    Output:1172016 packets, 79999012 bytes, 1172016 buffers
           426 broadcasts, 0 multicasts, 0 pauses
           0 errors, 0 underruns, 0 collisions
           0 deferred, 0 lost carriers

<H3C>display interface g0/6
GigabitEthernet0/6 current state: UP
IP Packet Frame Type: PKTFMT_ETHNT_2,
Description: GigabitEthernet0/6 Interface
Loopback is not set
Media type is twisted pair, port hardware type is 1000_BASE_T
100Mbps-speed mode, full-duplex mode
Link speed type is force link, link duplex type is force link
Flow-control is not enabled
The Maximum Frame Length is 10240
Broadcast MAX-ratio: 100%
Unicast MAX-ratio: 100%
Multicast MAX-ratio: 100%
PVID: 1
Mdi type: auto
Port link-type: access
Tagged   VLAN ID : none
Untagged VLAN ID : 1
Port priority: 0
Last clearing of counters: 00:03:50 Tue 01/01/2013
Last 300 seconds input: 3237 packets/sec 229491 bytes/sec 2%
Last 300 seconds output: 4878 packets/sec 5021633 bytes/sec 41%
Input (total): 1194263 packets, 85470115 bytes
         - unicasts, - broadcasts, - multicasts, - pauses
Input (normal): 1172854 packets, 84757466 bytes
         1172718 unicasts, 118 broadcasts, 18 multicasts, 0 pauses
Input: 21409 input errors, 18407 runts, 0 giants, - throttles
         3002 CRC, - frame, - overruns, 0 aborts
         - ignored, - parity errors
Output (total): - packets, 1817443720 bytes
         - unicasts, - broadcasts, - multicasts, - pauses
Output (normal): 1775053 packets, - bytes
         1775039 unicasts, 0 broadcasts, 14 multicasts, 0 pauses
Output: 0 output errors, - underruns, - buffer failures
         0 aborts, 0 deferred, 0 collisions, 0 late collisions
         - lost carrier, - no carrier