单项选择题
Two BGP peers connected through a routed firewall are unable to establish a peering relationship. What could be the most likely cause？（）
A.BGP peers must be Layer 2-adjacent.
B.EBGP multihop is not configured.
C.The firewall is not configured to allow IP protocol 89.
D.The firewall is not configured to allow UDP 179.
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相关考题
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单项选择题
AnetworkiscomposedofseveralVRFs.ItisrequiredthatVRFusersVRF_AandVRF_BbeabletoroutetoandfromVRF_C，whichhostssharedservices.However，trafficmustnotbeallowedtoflowbetweenVRF_AandVRF_B.Howcanthisbeaccomplished？（）
A.route redistribution
B.import and export using route descriptors
C.import and export using route targets
D.Cisco MPLS Traffic Engineering -
单项选择题
WhichOSPFLSAtypedoesanASBRusetooriginateadefaultrouteintoanarea？（）
A.LSA 1
B.LSA 3
C.LSA 4
D.LSA 5
E.LSA 7 -
多项选择题
Whichtwooftheseparametersareusedtodetermineaforwardingequivalenceclass？（）
A.IP prefix
B.Layer 2 circuit
C.RSVP request from CE for bandwidth reservation
D.BGP MED value
