Which command can be used to filter a RIPv6 route from getting installed in the routing table?
A.
ipv6 router rip cciedistribute-list.
B.
ipv6 router rip ccieoffset-list.
C.
interface e0/0ipv6 rip ccie distribute-list.
D.
interface e0/0ipv6 rip ccie advertise.
Explanation:
Filtering IPv6 RIP Routing Updates
Route filtering using distribute lists provides control over the routes RIP receives and advertises.
This control may be exercised globally or per interface.
Filtering is controlled by IPv6 distribute lists. Input distribute lists control route reception, and input
filtering is applied to advertisements received from neighbors. Only those routes that pass input
filtering will be inserted in the RIP local routing table and become candidates for insertion into the
IPv6 routing table.
Output distribute lists control route advertisement; Output filtering is applied to route
advertisements sent to neighbors. Only those routes passing output filtering will be advertised.
Global distribute lists (which are distribute lists that do not apply to a specified interface) apply to
all interfaces.
If a distribute list specifies an interface, then that distribute list applies only to that interface.
An interface distribute list always takes precedence. For example, for a route received at an
interface, with the interface filter set to deny, and the global filter set to permit, the route is blocked,
the interface filter is passed, the global filter is blocked, and the route is passed.
IPv6 prefix lists are used to specify certain prefixes or a range of prefixes that must be matched
before a permit or deny statement can be applied. Two operand keywords can be used to
designate a range of prefix lengths to be matched. A prefix length of less than, or equal to, a value
is configured with the le keyword. A prefix length greater than, or equal to, a value is specified
using the ge keyword. The ge and le keywords can be used to specify the range of the prefix
length to be matched in more detail than the usual ipv6-prefix/prefix-length argument. For a
candidate prefix to match against a prefix list entry three conditions can exist:
The candidate prefix must match the specified prefix list and prefix length entry.
The value of the optional le keyword specifies the range of allowed prefix lengths from the prefixlength argument up to, and including, the value of the le keyword.
The value of the optional ge keyword specifies the range of allowed prefix lengths from the value
of the ge keyword up to, and including, 128.
Note
The first condition must match before the other conditions take effect.
An exact match is assumed when the ge or le keywords are not specified. If only one keyword
operand is specified then the condition for that keyword is applied, and the other condition is not
applied. The prefix-length value must be less than the ge value. The ge value must be less than,
or equal to, the le value. The le value must be less than or equal to 128.
SUMMARY STEPS
1. enable
2. configure terminal
3. ipv6 prefix list prefix-list-name [seq seq-number] {deny ipv6-prefix/prefix-length | description
text} [ge gevalue] [le le-value]4. ipv6 prefix list prefix-list-name [seq seq-number] {permit ipv6-prefix/prefix-length | description
text} [ge gevalue] [le le-value]
5. Repeat Steps 3 and 4 as many times as necessary to build the prefix list.
6. ipv6 router rip name
7. distribute-list prefix-list prefix-list-name {in | out} [interface-type interface-number]http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-rip.html