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最近公司网络出现了一些问题,qq总是莫名其妙的掉线,然后cisco 3825 路由器过一段时间cpu就飙升到90%多,然后清一下nat表,cpu又会降下来,以前没有出现这种情况,我在怀疑是不是网络中病毒了,还是cisco 3825 路由器由于硬件原因处理不过来这么多的nat条目,导致的网络问题?我的网络架构是一台cisco3825 作为出口,下面连3层交换机cisco3750 ,cisco3750每个端口划分一个vlan,vlan 的ip地址作为pc的网关,然后pc通过cisco 2950连接到cisco3750上,网络拓扑就这么简单,公司现在上网人数差不多70人左右,请问我的网络怎么了,问题出在哪个地方呀?跪求告诉解答!!
下面我把我的配置贴出了
cisco 3825路由器配置信息:
interface GigabitEthernet0/0
ip address 192.168.100.254 255.255.255.0
ip nat inside
duplex auto
speed auto
media-type rj45
!
interface GigabitEthernet0/1
ip address 58.210.148.2 255.255.255.240
ip accounting output-packets
ip nat outside
duplex auto
speed auto
media-type rj45
!
no ip classless
ip route 0.0.0.0 0.0.0.0 58.210.148.1
ip route 10.10.0.0 255.255.0.0 192.168.100.253
!
no ip http server
ip nat translation tcp-timeout 20
ip nat translation udp-timeout 20
ip nat translation icmp-timeout 20
ip nat translation max-entries 12000
ip nat pool nyy 58.210.148.3 58.210.148.3 netmask 255.255.255.240
ip nat pool nyy-1 58.210.148.7 58.210.148.7 netmask 255.255.255.240
ip nat pool nyy-office 58.210.148.8 58.210.148.8 netmask 255.255.255.240
ip nat inside source list nyy pool nyy overload
ip nat inside source list nyy-1 pool nyy-1 overload
ip nat inside source list nyy-office pool nyy-office overload
ip nat inside source static 10.10.10.4 58.210.148.4
ip nat inside source static tcp 10.10.60.100 2700 58.210.148.5 2700 extendable
ip nat inside source static tcp 10.10.60.100 6666 58.210.148.5 6666 extendable
ip nat inside source static tcp 10.10.60.100 3389 58.210.148.5 53389 extendable
ip nat inside source static tcp 10.10.60.100 8080 58.210.148.5 54480 extendable
ip nat inside source static 10.10.10.111 58.210.148.6
!
ip access-list standard nyy
permit 10.10.30.240 0.0.0.15
permit 10.10.20.240 0.0.0.15
permit 10.10.40.240 0.0.0.15
permit 10.10.40.16 0.0.0.15
ip access-list standard nyy-1
permit 10.10.60.0 0.0.0.255
ip access-list standard nyy-office
permit 10.10.50.0 0.0.0.255
cisco 3750 全部配置:
switch 1 provision ws-c3750g-24t
ip subnet-zero
ip routing
ip dhcp excluded-address 10.10.60.2 10.10.60.5
ip dhcp excluded-address 10.10.40.240 10.10.40.254
ip dhcp excluded-address 10.10.20.240 10.10.20.254
ip dhcp excluded-address 10.10.30.240 10.10.30.254
ip dhcp excluded-address 10.10.60.110 10.10.60.254
ip dhcp excluded-address 10.10.40.16 10.10.40.31
!
ip dhcp pool vlan20
network 10.10.20.0 255.255.255.0
default-router 10.10.20.1
dns-server 61.177.7.1
!
ip dhcp pool vlan30
network 10.10.30.0 255.255.255.0
default-router 10.10.30.1
dns-server 61.177.7.1
!
ip dhcp pool vlan40
network 10.10.40.0 255.255.255.0
default-router 10.10.40.1
dns-server 61.177.7.1
!
ip dhcp pool vlan50
network 10.10.50.0 255.255.255.0
default-router 10.10.50.1
dns-server 61.177.7.1
!
ip dhcp pool vlan60
network 10.10.60.0 255.255.255.0
default-router 10.10.60.1
dns-server 61.177.7.1
!
no ip domain-lookup
ip cef accounting prefix-length
vtp mode transparent
!
mls qos
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
!
!
vlan 10,20,30,40,50,60
!
interface GigabitEthernet1/0/1
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet1/0/2
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/0/3
switchport access vlan 30
switchport mode access
!
interface GigabitEthernet1/0/4
switchport access vlan 40
switchport mode access
!
interface GigabitEthernet1/0/5
switchport access vlan 50
switchport mode access
!
interface GigabitEthernet1/0/6
switchport access vlan 60
switchport mode access
speed 10
!
interface GigabitEthernet1/0/7
switchport access vlan 60
speed 10
!
interface GigabitEthernet1/0/8
switchport access vlan 60
speed 10
!
interface GigabitEthernet1/0/9
!
interface GigabitEthernet1/0/10
!
interface GigabitEthernet1/0/11
!
interface GigabitEthernet1/0/12
!
interface GigabitEthernet1/0/13
!
interface GigabitEthernet1/0/14
!
interface GigabitEthernet1/0/15
!
interface GigabitEthernet1/0/16
!
interface GigabitEthernet1/0/17
!
interface GigabitEthernet1/0/18
!
interface GigabitEthernet1/0/19
!
interface GigabitEthernet1/0/20
!
interface GigabitEthernet1/0/21
!
interface GigabitEthernet1/0/22
!
interface GigabitEthernet1/0/23
!
interface GigabitEthernet1/0/24
no switchport
ip address 192.168.100.253 255.255.255.0
!
interface Vlan1
no ip address
shutdown
!
interface Vlan10
ip address 10.10.10.1 255.255.255.0
!
interface Vlan20
ip address 10.10.20.1 255.255.255.0
!
interface Vlan30
ip address 10.10.30.1 255.255.255.0
!
interface Vlan40
ip address 10.10.40.1 255.255.255.0
!
interface Vlan50
ip address 10.10.50.1 255.255.255.0
!
interface Vlan60
ip address 10.10.60.1 255.255.255.0
ip access-group 101 in
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.100.254
ip route 10.10.0.0 255.255.0.0 Null0
ip http server
!
arp 10.10.30.253 0000.0000.0000 ARPA
arp 10.10.30.248 0000.0000.0000 ARPA
arp 10.10.30.249 0000.0000.0000 ARPA
arp 10.10.30.246 0000.0000.0000 ARPA
arp 10.10.30.245 0000.0000.0000 ARPA
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