CCIE R&S v5 Exam Review on 21 November 2015
1: PPP–>Encap FR on R17, removed it and change to PPP and configured authentication username
and password on R17 using ppp authentication chap hostname and password and generated a
default route using ppp ipcp route default.
2: EIGRP–>Filtering was placed in the EIGRP process using ACL, put a permit any statement
and fixed. Metric weight was already applied.
3: OSPF–> Max metric router-lsa on bgp startup was configured on either R21 or 22, removed
the same, once u will remove it the command will still exist on the router using max-metric
router-lsa, removed the same again, subnet mask mismatch b/w R21 and R22.
4: IPV6–>It was asked in the question don’t touch IPV6 traffic filter applied on R22.
Configured the IPV6 using IPV4 addressing and set the next-hop using route map which were
pre configured and advertised the eth0/0 subnet on R25 BGP process. Also enabled the BGP
neighborship b/w R22 and R32.
5: DHCP–>Very easy one, just advertised the VLAN 100 subnet in the OSPF process on SW2.
R101 was configured with manual mac addressing and port security was applied on Eth1/0 SW2,
however that was configured with the correct MAC address. No changes on R7 and R8, all was
fine. Tested the trace and resolved.
6: DMVPN –>On R19 i think ip nhrp map mutlicast was not configured and an ACL was applied
on R13 Se4/0 interface, ammended the ACL and fixed the same, also some minor changes on R18.
Also make sure to apply ip nhrp redirect on R16 and shortcut on R17, 18 and 19. A trace was
asked to me from one of the spoke towards the server which was resolving on a different name,
checked R15 as there were two entries with the same name, removed the irrelevant one and fixed.
7: BGP –>LDP was broken on R1 and R2, configured ip cef on both the routers and enabled MPLS ip
wherever required on both the devices, next hop was configured on R3 or R5 with wrong next hop,
kept the route map applied; however removed the next-hop from it. resolved.
8: MPLS –>Client was not taking the IP address, checked the client identifier on R9 and fixed the same.
Also advertised the VLAN 100 and 200 Subnet in OSPF on SW3, did a trace from from client to client (from PC 105 to 106)
and worked. It was also asked that R7 should be the preferred path and R8 backup.
Also did some default orginate on R8 and configured NAT on both R7 and R8. Tested the same; however traffic from 22.214.171.124
was going via R8, so to fix it applied local preference using route map under bancobank_spoke_to_spoke address family
towards R7 inbound. Resolved.
9: DMVPN: I dont remember what i did to fix this.
10: NAS: NAS server was picking wrong ip address, changed the client identifier by changing the command from ip address dhcp to
ip address dhcp client-id eth0/0 hostname NAS and tested the same. Resolved
1. interface down down, port security, selected device SW3 and asked for host 1 mac address.
2. DMVPN, mid chain error, redistribute connected on R15; however route-map not configured.
3. BGP policy
I got VRF version, Sw1 and Sw2 in transparent and Sw3 and SW4 in server client
R6 and R7 was pre configured for respective VRF BGP neighborship and rest was same.