Cisco ASR 5000 Series Administration Manual page 26

▀ Network Deployment(s)
Tunneling:
Network Layer: IPv4, IPv6
Data Link Layer: ARP
Physical Layer: Ethernet
S -G W
T ra n sp o rt
IP v4 / IP v6
G T P -C /U
U D P
IP v4 / IP v6
L 1 /L 2
S1-U Interface
This reference point provides bearer channel tunneling between the eNodeB and the S-GW. It also supports eNodeB
path switching during handovers.
Supported protocols:
Transport Layer: UDP, TCP
Tunneling: IPv4 or IPv6 GTP-U (bearer channel)
Network Layer: IPv4, IPv6
Data Link Layer: ARP
Physical Layer: Ethernet
▄ Cisco ASR 5000 Series Serving Gateway Administration Guide
GTP: IPv4 or IPv6 GTP-C (signaling channel) and GTP-U (bearer channel)
S 5 /S 8 (G T P ) P -G W
T ra n sp o rt
IP v4 / IP v6
G T P -C /U
U D P
IP v4 / IP v6
L 1 /L 2
Serving Gateway Overview
OL-22986-01