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: Dec 21,2024
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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4. If the source address and destination address of the data frame are from the same port , the switch will discard the data frame by default . First, there are brothers introduced, put the key equipment on the display, in fact, this is no way,ccie rs advanced technologies labs, because his putty is not cascading, so how many windows you have ordered you do not know. When all the configuration is complete, put the key equipment in the lower part of the display and check it in five minutes! ! Avoid being TR and don't know. encourage students to reach out to more unknown areas, to touch all The fifth place of TR: Section2's multicast, all directly under the cognac, and when he TR me, I can't see it immediately, can't get up, even worse, when I fix the configuration, the forefoot Just added the configuration, he gave me the next second no (change the global configuration of R17), and finally my wall did not help me to serve him. This multicast is not required. Ipv6 nat v6v4 source 2001::2 192.168.1.3 there was a bible. thing. My Time Node 4: In the year of my freshman year, I came into contact with an online course of a corporate teacher and fell in love at once. Interest is the best teacher, otherwise I am a sophomore formally entered the course of study. IPV6 supports abbreviated rules: MP-BGP Multiprotocol BGP The VTP switch will synchronize the last configuration . =========================================================== =============== 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.
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