at t gateway router

backup groups between multiple vswitches or switch stacks, and specify a group number for each backup group. This is MHSRP multiple HSRP ). For example, you can configure an interface on switch 1 as an active router and an interface on switch 2 as a backup router, at the same time, you can configure another interface on switch 2 as the active router, and configure another interface on switch 1 as the backup router. The detailed working principles of MHSRP will be introduced in the next section.

(1) configuration of the server:First set the server's IP address to 192.168.1.1, the PC can be used here, but before use, the first to download the TFTP software, and put it on the C drive, to keep the TFTP software open. : 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/5B/78/wKiom1UJXm7T0rySAALoC9F7Pq4029.jpg "title=" capture. PNG "alt=" Wkiom1ujxm7t0rysaaloc9f7pq4029.jpg "/>(2) configuration of the router:Router>enablerouter#Router#configure TerminalRouer (config) #interface f0/0R

StandardControlListConfigure an instance CreateAccessControlList Router # access-list 1 deny 172.16.4.13 0.0.0.0 block a host (available host) Router # access-list 1 permit 172.16.0.0 0.0.255.255 Router # aceess-list 1 permit 0.0.0.0 255.255.255.255.255 allow all Application to interface Router (config-if) # ip access-group 1 out/in direction ExtensionControlListConfigure an instance CreateAccessControlList Protocol source address, target address, and other ports Router (config) # ac

This blog post will introduce in detail the problem of the adjacent relationship caused by inconsistent MTU and the solution. 1. MTU inconsistency (1) When to pay attention to MTU Starting from the Exstart status, the OSPF process follows the Interface MTU field in the DD message from the neighbor. (2) When to ignore DD If the value of the Interface MTU in the received DD message is greater than that of the local Interface MTU, the DD message is ignored. (3) MTU inconsistent results When the In

If the router has damaged iOS for some reason, does not start properly, or needs to upgrade the current iOS, we can do so in the following ways.(1) First to find the appropriate iOS image file placed in the root directory of TFTP, the IP address of the configuration server is 192.168.1.1(2) in privileged mode, a version upgrade can be done using one of the following commands.i.e.: rouer#copy TFTP flash: (note the colon after flash)Then enter the IP ad

-redistributionR3:Router OSPF 1Area 2 Nssa no-redistribution4 Special Areas, only Nssa does not automatically generate a default route, the title requires that the default next hop is R3, soR3:Router OSPF 1Area 2 Nssa Default-information-originateR1:sho IP roMetric values can be modified by area 2 Nssa default-information-originate metric 20, but not allowed in the title, so,R3:rouer OSPF 1Area 2 Default-cost 20R1; Sho ip ro os7, increase the lo3=30.1

:Service udp-small-serversService tcp-small-serversHostname Router-Enable secret test-Ip subnet-zeroInterface Ethernet0Description the LAN port link to my local networkIp address 202.96.199.1 255.255.255.0Interface Serial0Description the WAN port link to Router-BIp address 202.98.0.1 255.255.255.252Bandwidx 128Interface Serial1No ip addressShutdownIp domain-name xxx.comIp name-server 202.96.199.2Ip name-server 202.96.199.3Ip classlessIp route 202.97.76.0 255.255.255.255.202.98.0.2Line con 0Line

router (config) # access-list 101 permit ip any allows all the router (config-if) through the application to the interface) # ip access-grouup 101 out/in naming Control list configuration instance www.2cto.com create naming Control list router (config) # ip access-list extended xiaoliu name: xiaoliurouter (config-ext-nacl) # deny tcp 172.16.4.0 0.0.0.255 172.16.3.0 0.0.0.255 eq 23 router (config-ext-nacl) # permit ip any application to the interface rouer