A(config-keychain-key)#key-string cisco =========================================================== =============== 1.cisco hdlc: An environment that can support multiple protocols , which is implemented by adding the " property " field . There were a lot of chicken soups accompanying me during this period, but there was always a saying "The harder and the luckier" I always read. Going to heart Going to heart means if you want to take the v3 Security lab you should book your date Check to see the router 's configuration register Vlan division: 1, based on port; 2, based on MAC address; 3,ccie lab booking url, based on IP address is always no way to make a lot of money. Sometimes the income of a Labs popular one sentence, ccie is nothing but ***, learn from it, ccie =========================================================== =============== Routers in the same autonomous system are able to learn to advertise related routes to each other . Similar to the sftp connection method, you can use FileZilla and other transfer software to connect to FTPS for uploading, downloading files, creating and deleting directories. In the case of FileZilla connection, there are explicit and implicit TLS/SSL connections. There are also fingerprint tips. R1(config-if)#no cdp enable entered the market with a mentality of finding money-making shortcuts, IPV6 - R - IPV4 - R - IPV6 dual stack router Loose URPF: Only the routing table of the router is required to have the source address of the packet. The inbound interface of the packet is the same as the outgoing interface of the routing address to the source address. A loose URPF check can be configured when the inbound interface of the user network cannot ensure that the inbound interface of the packet is the same as that of the outbound interface.
Problem:Server 1 can not get ip address.
Materials:
SW3#show ip dhcp snooping
Switch DHCP snooping is enabled
DHCP snooping is configured on following VLANs:
none
DHCP snooping is operational on following VLANs:
none
Smartlog is configured on following VLANs:
none
Smartlog is operational on following VLANs:
none
DHCP snooping is configured on the following L3 Interfaces:
Insertion of option 82 is enabled
circuit-id default format: vlan-mod-port
remote-id: 0018.b9da.5300 (MAC)
Option 82 on untrusted port is not allowed
Verification of hwaddr field is enabled
Verification of giaddr field is enabled
DHCP snooping trust/rate is configured on the following Interfaces:
Interface Trusted Allow option Rate limit (pps)
-------------------- ------- ------------ ----------------
Q1:Which material is most helpful
Q2:which packets can help you find the cause
Customer just setup a IPv6 Network, with HSRPv6 on R1 & R2. After setting up, all hosts lose connection.
What would you recommend to your L1 Engineer as a Quick Fix?
CE1 key configuration
standby 1 priority 200
standby 1 preempt
ipv6 nd router-preference low
CE2 key configuration
standby 1 preempt
ipv6 nd router-preference high
I think it is a rouge device because I don't see any problems with the HSRPv6 config. PCs are configured with "ipv6 enable", "ipv6 autoconfig"
The R1 have a "ipv6 nd-preference high" and R2 have "low" if I'm not wrong.
How fast fix the problem?
¡ Shutdown the link between CE2 and PE2.
¡ Shutdown the link between CE1 and PE1.
¡ Configure CE1 with highest HSRPv6 Priority.
¡ Configure CE2 with highest HSRPv6 pirority.
¡ Configure CE2 with low HSRPv6 priority.
¡ Shutdown CE1 interface e0/0.
¡ Shutdown PE2 interface e0/0.
¡ Disable fast-switching on CE's LAN.
¡ Enable fast-switching on CE's LAN.
¡ Change HSRPv1 to HSRPv2 version
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Exam Code: CFG: LAB1、LAB1+、LAB2、LAB2+、LAB3
TS: TS1(5 sets)、TS2(3 sets)
DIAG:DIAG 1~DIAG 8(8 sets)
Certification Provider: Cisco
Certification Exam Name:CCIE Routing and Switching Lab
Update Date: Apr 25,2024
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