multi-layer switching(多层交换)
cef思科快速转发
1路由
2高可用性
3安全
4qos
5多播
vlan的acl只有3层交换机支持,2层不支持。
实验:
sw1:
vlan 100
inter range f0/4,f0/6
switchport mode access
switchport access vlan 100
spanning-tree portfast
r4:
int e0/0
ip add 100.1.1.4 255.255.255.0
no sh
r6:
int f0/0
ip add 100.1.1.6 255.255.255.0
no sh
vacl:抓源ip地址或mac
action:fwd,drop
sw1:
access-list 4 permit 100.1.1.4
vlan access-map a
match ip address 4
vlan access-map a
action drop
vlan filter a vlan-list 100 (调用在vlan100)
vlan access-map a
match mac address mac
mac access-list extended mac
permit host 0001.969c.9c90 any
vlan access-map a
action drop
vlan filter a vlan-list 100
clear arp-cache(清理arp表)
配置vacls
switch(config)#vlan access-map map_name[seq#]
switch(config-access-map)#match {ip address {1-199 |1300-2699 | acl_name} | ipx address {800-999 | acl_name} | mac address acl_name}
switch(config-access-map)#action {drop [log]} | {forward [capture]} | {reddirect {type slot/port} | {port-channel channel_id}}
switch(config)#vlan filter map_name vlan_list list
tcam 表
3重 0,1或x
转发方式
集中式
分布式
进程交换
asic交换
netflow
cef
cef两个层面
控制层面和数据层面
控制层面叫fib表,从路由表下载下来,可以被asic芯片调用,解决递归查询,扩展应用(MPLS)。
adj表把arp表下载下来
启用cef
ip cef
show ip cef
show adjacency
交换机无论2层3层都有arp表,3层才可以通过svi做不同vlan通信
vlan间路由:
1.svi
2.l3接口
3.单臂路由
1.r4/r6模拟成pc.配网关
2.sw1将接口划入相应vlan.
3.sw1和sw2 trunking
4.确保sw2有vlan4/6
5.sw2和r3 trunking
6.r3创建子接口
交换端口分析仪(抓包)
sw1:
moinitor session 1 source interface fasternet 0/1
monitror session 1 destination interface f0/2(把f0/1流量引到f0/2)
show monitro session 1
对于不在同一个交换机的抓包开启rvlan
moinitor session 1 source interfa fasternet 0/1
moinitor session 1 destination remote vlan 100(专门用于传输抓包流量的vlan) reflector-port f0/3(空接口)
vlan 100
remote-span(把vlan100定义成rvlan)
sw2:
vlan 100
remote-span
monitor session 1 source remote vlan 100
monitor session 1 destination int f0/2
ntp(网络时间协议)
show clock (查看路由器时间)
使用udp port 123;版本4
实验:
r1:
int s0/0
ip add 12.1.1.1 255.255.255.0
no sh
int s0/1
ip add 13.1.1.1 255.255.255.0
no sh
r2:
int s0/0
ip add 12.1.1.2 255.255.255.0
no sh
r3:
int s0/1
ip add 13.1.1.3 255.255.255.0
no sh
假设吧r2作为时钟源mater
r2:
clock set 21:47:30 25 jul 2007
1.跟主时钟同步。
2.跟次级时钟同步。
net master 1(越小越准确默认8)
show ntp status
r1:
ntp server 12.1.1.2
router rip
v 2
no au
net 12.0.0.0
net 13.0.0.0
r2:
router rip
v2
no au
net 12.0.0.0
r3:
router rip
no au
v2
net 13.0.0.0
ntp server 12.1.1.2
ntp peer 13.1.1.1(跟ntp次级同步)
标签:map,no,ip,vlan,access,MLS,Stick,Router,100 From: https://www.cnblogs.com/smoke520/p/18354127