ccnp tshoot v7 lab manual
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If multiple path originating router IDs or router IDs are the same, then the shortest path of the Cluster-List is preferred .
LP takes the maximum value of LP in the detailed routing
Access-list 1 permit 184.108.40.206
None uses the distribution list or the access control list deny 521 port.
Next-hop , the next-hop is changed to the update source IP of R3 , which is the loopback interface IP.
IP routing table
Network 192.168.12.2 0.0.0.0 area 0
Dual two-way point of the route re-release
Router(config)# router ospf 1
On R4 , there are also redundant links to 220.127.116.11 and 2.0. Both R3 and R5 can reach the two network segments, and finally R4 selects R3 as the next hop to the two network segments. Because in the BGP routing principle, the route preference decision is compared to the BGP routerID , and the RouterID of R3 is smaller than R5 , so R4 is preferably R3 .
If there is a tag , it is determined whether the trunk port allows the VLAN frame to enter. Allow the next step, otherwise discard the frame.
Once the ORF is deployed , the BGP peers will negotiate the ORF capability in the open message when the BGP peer relationship is established . If the negotiation succeeds, the ORF content is pushed using the route-refresh packet .
S* 192.168.1.0/24 [1/0] via 172.16.12.1
If the packets of the same data stream are sent in different paths, the IP packets may need to be re-queued when they reach the destination. This may reduce the forwarding performance of traffic such as VoIP , or if the packets arrive out of order, the quality of service will be degraded, packets may be discarded, and delay jitter will be added.
/ / used to match summary routes
Neighbor 18.104.22.168 update-source Loopback0 neighbor 22.214.171.124 remote-as 345
switchport trunk encapsulation dot1q switchport mode trunk
Establish BGP neighbors
By default, this database is dynamic, which means that when the switch is restarted, all entries in the database are lost. The result of this event may cause network disruption. So we can store this database as a file, this is the DHCP snooping database agent . The configuration command is very simple, global command:
[Experiment 5 ] There are subnet routes, the subnet route prefix length is different (but both match), and the longest match
Can be detected when a violation time occurs, and can be punished
Layer 2 interface (switchport) : access mode, trunk mode
Ip address 10.1.25.2 255.255.255.0
!! The red font part is the number of hops to be increased
Ip helper-address 192.168.100.1
Of course, on R3 , the same effect can be achieved with the distribution list in the in direction.
Match ip add pre 1
Neighbor 10.1.12.2 capability orf prefix-list receive
Preemption enabled, min delay 30 sec Active is local, weighting 100
After the basic configuration is complete, take a look:
This comprehensive thinking question helps you sort through several solutions:
Switch(config-if)# ip address 192.168.10.254 255.255.255.0 Switch(config-if)# no shutdown
So in fact, it is very simple, as long as the prefix and mask part of the route, respectively, use the source and destination parts of the ACL to match.
Configuring static routes
R4 selects R5 as the next hop to the 100 network segment. This is because the two routes are taken from R5 , the weight weight is 100 , and the weight of R3 is the default 0. Naturally, R5 is preferred, so R4 will The path is switched to R5 .
Recognized as a self-determination attribute. LP is the local priority and is used for Update messages between internal peers ( IBGP ) , but not to other EBGP neighbors. The larger the LP value, the higher the priority.
Longest match principle 10
Sw1(config-if-range)#switchport mode trunk
Set traffic-index 30
Data ( DATA )
Therefore, the role of the no-prepend keyword is: Do not prepend local-as to updates from ebgp peers . If you advertise the route to the EBGP neighbor of the primary AS , the secondary AS number is not attached .
Aggregate-address 172.16.0.0 255.255.0.0 as-set summary-only
For 802.1D , when a port is elected as the designated interface, which from blocking to forwarding at least 30S of time. However, in RSTP , the proposal/Agreement mechanism enables the interface to complete a fast, reliable transition in seconds.
R2(config)# router ospf 1
Match community 11 exact-match // strict match
Aggregate-address summary address suppress-map xxx as-set
126.96.36.199 is directly connected, FastEthernet0/0
Preferred routes sent by EBGP neighbors (relative to IBGP neighbors), preferred federation EBGP in federated EBGP and IBGP
( 20s time),ccnp tshoot v7 lab manual, start to enter the listening state
Distribute-list 1 out rip
Length, or mask length. When paired with the above ACL , some students will even write
188.8.131.52 backdoor to solve the problem, once the route becomes a local route, the AD value becomes 200 , and the router does not go to its EBGP.
The packet is captured as follows ( R3 sends the BGP update package to R4 ):
BGP routing table entry for 184.108.40.206/24, version 2
Route reflection clusters include reflectors and their clients
TCP/IP volume one
For details on the related fields of the BGP table, see the show section of the BGP Configuration section of this document.
As a result, when PC2 sends data to its own gateway 0.254 , since the MAC of the gateway has been spoofed into the MAC of PC1 , the data is forwarded to PC1 , and PC2 is disconnected. If PC1 is smarter, transfer the data sent by PC2 to the real gateway, and run a message analysis tool locally to snoop the data sent by PC2 . Then, in the case of PC2 continuous network, God does not know. I feel the Internet traffic of PC2 , this is the man in the middle , the middleman attack.