A.隧道承载的业务封装VLAN ID
B.根据下一跳IP查找ARP表,封装上报文的目的MAC
C.根据此IP地址进行端到端路由计算
D.根据此IP设备直接找到隧道的出端口
B.Extended ACL, matching source IP address, IP protocol type, TCP source port No., TCP destination port No., UDP source port No., UDP destination port No., ICMP type, ICMP Code, DSCP (DiffServ Code Point), ToS and Precedence.
C.L2 ACL, matching source MAC address, destination MAC address, source VLAN ID, L2 Ethernet protocol type, and 802.1p preference value.
D.Mixed ACL, matching source MAC address, destination MAC address, source VLAN ID, source IP address, destination IP address, TCP source port No., TCP destination port No., UDP source port No., and UDP destination port No.
B.双方配置的隧道标签必须相同
C.双方配置的伪线标签可以不相同
D.双方分包延时(对应华为的报文装载延时)配置必须相同,建议双方对通都使用500us这个参数值
A.PTN可以统一网络协议,简化网络层次
B.PTN中传送以太网业务比SDH实时性能更好
C.PTN中传送以太网业务比SDH同步性能更好
D.PTN便于提供各种类型的新业务,实现综合业务运营
line upgrade or not.