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CCIE R&S v5 Exam Review on 13 October2015

CCIE Real Lab Workbook

CCIE R&S v5 Exam Review on 13 October2015 No ratings yet.

Tshoot section.

1. access-list on sw1 was blocking user traffic and i removed that access list and then only i can get desired output. mac address was configured incorrectly in sw2

2. frame relay encap was there and i removed that one and configured ppp. later i asked one of ccie candiate and he told me that there is no need to remove frame relay and just configured ppp and then tunnel came up.

3. r22 ospf router-id was wrong.

4. passive interface on r13

The idea is, when Host 1 issues pings to Internet, it gets sent to R1.
R1 looks uo the destination IP address in RIB.
It finds E0/3 (connecting to R3) as exit interface.
It changes the source Private IP to NAT/PAT IP.
It forwards ICMP echo requests to R3.
R3 looks up its table and send to Internet.
Internet replies back to host 1 via R2.
R2 sends reply to R1 via interface E0/2.
R1 looks up reverse path in RIB as per uRPF rules.
R1 finds source being learnt via E0/3 (connecting to R3) ? It drops the reply.

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