The MPLS-OPS Archive

[Aita Federico /Consulente <Federico.Aita@albacom.it>]

I have some question about Cisco and MPLS, 'cause i've found some question
that i haven't understood.
Please help me

1)is possible to implement QoS: (2 valid answer)
-creating a different label switch path for each class
-using "exp" 3 bits
-using DiffServe Codepoints
-using ToS bits in layer 3

2)Hardware requirements for MPLS:
-additional processing and memory is needed to built LFIB, is available only
on high-end routers
-MPLS is available on low-end routers but is limited due to amount of memory

3)I have my_vpn on PE. How can i check "exchange of info" between PEs:
-on PE "show ip cef vrf" and verify that there's a label
-on PE "show ip bgp summary"
-on PE "show ip bgp vpnv4" and verify that routes from remote PE have been
received

4)I have a problem with CEF, something is not working, what can i check: (3
valid answer)
-CEF has been disabled on interface level
-CEF has been disabled under vpnv4 config
-CEF has been disabled under address-family config
-another feature configured has disabled CEF
-encapsulation used is not supported by CEF

5)to limit route distribution, what can i use: (2 valid answer)
-maximum hop
-maximum AS-in
-neighbor maximum-prefix
-maximum route

6)with IOS 12.1 how many VPN OSPF processes can run simultaneously in an
MPLS VPN PE-router: (i think 28)
-1
-28
-255
-depend from memory

7)MPLS VPN and peer-to-peer VPN: (2 valid answer)
-MPLS VPN PE are aware of customers route
-MPLS VPN PE are not aware of customers route
-peer-to-peer VPN are aware of customers route
-peer-to-peer VPN are not aware of customers route

8)Where's the syntax error in this config for frame-mode MPLS over ATM?
-interface ATM 0/0.2 point-to-point
-pvc auto
-ip unnumbered loopback 0
-tag-switching ip

9)tag-switching advertise-tags for LIST1 to LIST2:
-LIST1 specifies for which network labels will be advertised
-LIST1 specifies for which LSR neighbor labels will be advertised
-LIST2 specifies the ending network address for which labels will be
advertised
-LIST2 specifies the starting network address for which labels will be
advertised 

Thanks
Federico

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