Which two statements about IS reachability TLV （TLV 2） and the extended IS reachability （TLV 22） are true？（）A、TLV 22 supports wide metrics.B、TLV 2 is only used in Level 1 routers.C、TLV 22 displays the neighbor’s extended areas.D、Only TLV 22 can support the inclusion of sub-TLVs.E、 Only TLV 22 can be flooded across L1/L2 boundaries.
Which two statements about IS reachability TLV （TLV 2） and the extended IS reachability （TLV 22） are true？（）
- A、TLV 22 supports wide metrics.
- B、TLV 2 is only used in Level 1 routers.
- C、TLV 22 displays the neighbor’s extended areas.
- D、Only TLV 22 can support the inclusion of sub-TLVs.
- E、 Only TLV 22 can be flooded across L1/L2 boundaries.
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