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
(0)
最佳答案
正常情况下MTU值默认值是1500,而 tcp mss是有MTU值协商过来的。
过低将MTU值和TCP mss值写小容易造成报文过于频繁分配,降低报文的传输效率,特别在大包传输过程更加明显,建议您先将mtu值配置先删除(undo mtu),然后将TCP Mss值修改为1440(推荐),然后关闭接口下的流浪统计再试一下。
runts 表示接收到的超小帧个数。超小帧即接收到的报文小于64字节,且包括有效的CRC字段;
CRC 校验错误
这些都是异常情况,除了线路问题也有可能是设备间的协商问题所致。可以建议替换设备测试。
(0)
我按照您说的修改了,最高只能跑到10MB,也就是80Mbps,差距还是比较大。我想问一下,您说的替换设备是指替换路由器吗?我没法把电信那边的设备替换了啊。
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我按照您说的修改了,最高只能跑到10MB,也就是80Mbps,差距还是比较大。我想问一下,您说的替换设备是指替换路由器吗?我没法把电信那边的设备替换了啊。