Which of the following statements about SR-TE administrative constraints is FALSE?
C
Explanation:
Shared-Risk-Link Groups(SRLG) is taken into account when calculating both primary and secondary
path to avoid routing over the same physical link.
A router participating in SR-TE is advertising a value of Ox11 for the admin-group membership of one
of its interfaces. Which of the following statements is TRUE?
B
Explanation:
In SR-TE, the admin-group is represented by a 32-bit value, where each bit represents a different
admin-group. The value Ox11 in binary is 000100010001, which has two bits set to 1, indicating that
the interface belongs to two different admin groups. The exact admin-groups that the interface
belongs to depends on how the admin-groups have been configured on the router.
Which of the following statements about enabling and using traffic engineering for Segment Routing
is FALSE?
C
Explanation:
Bandwidth availability can be configured as a link attribute in SR-TE, it is used to control the amount
of traffic that can be sent over a particular link.
Which of the following list of SR-TE attributes has to be advertised among routers?
A
Explanation:
In SR-TE, routers need to advertise certain attributes of their links to other routers in the network in
order to calculate traffic-engineered paths. These attributes include:
Administrative groups that each link belongs to: This information is used to restrict the use of certain
links to specific traffic types or groups.
TE metric of links: This information is used to calculate the cost of using a particular link for a traffic-
engineered path.
Bandwidth availability of each link: This information is used to control the amount of traffic that can
be sent over a particular link.
SRLG that each link belongs to: This information is used to avoid routing over the same physical link.
Link status up/down is not needed to be advertised as it is part of the IGP protocol and is used to
check the reachability of a link.
Based upon the exhibit, which of the following statements regarding the configuration is FALSE?
A
OSPF is being used for segment routing with traffic-engineering (SR-TE). The traffic-engineering
option has been set to "sr-te false". Which of the following statements is TRUE?
D
Explanation:
When using Segment Routing with Traffic Engineering (SR-TE) in OSPF, the TE information is
advertised using extended-link opaque LSAs. The option "sr-te false" indicates that OSPF will not
advertise the TE information in the OSPF database, thus the routers will not be aware of the TE
information.
Examine the exhibit.
An LSP is being configured to start at R1 and end at R6 using local CSPF. The LSP has the following
constraints. Include admin-group GREEN, use the TE metric and hop-limit 3. What routers will be
included in the LSP path?
C
Examine the exhibit. Based upon the configuration, which routers will the LSP go through?
C
Which of the following statements about path definitions is FALSE?
C
Which of the following is an advantage of enabling label stack reduction for a CSPF-calculated path,
as compared to using plain CSPF?
A
Explanation:
Once a path is associated with an LSP, it cannot be used by other LSPs is False. A path can be used by
multiple LSPs, but each LSP can have different attributes like bandwidth, priority and other
constraints.