http://www.ciscoclub.in.th/index.php?topic=1171
[/li]Router#show cef interface serial 1/0.20
Serial1/0 is up (if_number 18)
Internet address is 150.1.31.37/30
ICMP redirects are always sent
Per packet loadbalancing is disabled
IP unicast RPF check is disabled
Inbound access list is not set
Outbound access list is not set
IP policy routing is disabled
Interface is marked as point to point interface
Hardware idb is Serial1/0
Fast switching type 5, interface type 64
IP CEF switching enabled
IP CEF VPN Fast switching turbo vector
VPN Forwarding table "SiteA2"
Input fast flags 0x1000, Output fast flags 0x0
ifindex 3(3)
Slot 1 Slot unit 0 VC -1
Transmit limit accumulator 0x0 (0x0)
IP MTU 1500
https://blog.initialdraft.com/archives/2558/
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