# Service IOA

Table 27: Service IOA

Protocol or Application | ES2–S1 SERVICE IOA
--- | ---
Accepts traffic destined for GRE tunnels or DVMRP (IP-in-IP) tunnels | No
APS/MSP | No
ATM | No
BERT | No
BFD | No
BGP | Yes
BGP/MPLS VPNs | Yes
Bridged Ethernet | No
Bridged IP | No
Cisco HDLC | No
DHCP external server | No
DHCP local server | No
DVMRP and GRE support—access side | No
DVMRP and GRE support—server side | Yes (over dedicated tunnel server ports)
Dynamic interfaces | No
F4 OAM and F5 OAM (ATM administration) | No
FDL (facilities data link) | No
Firewall | No
Frame Relay | No
ICMP unreachable messages for packets reaching null 0 interfaces with static routes | No
ICR | No
IEEE 802.3ad link aggregation | No
IEEE 802.3ah OAM link-fault management | No
IP | Yes
IP multicast | No
IP reassembly for tunneled packets | Yes
IPSec | No
IPv6 | No
IPv6 multicast | No
IPv6 neighbor discovery | No
IS-IS | Yes
J-Flow Statistics | Yes
L2TP/IPSec | No
LAC support—access side | No
LAC support—peer side | No
LNS support—peer side | Yes
Local loopback | No
MDL (maintenance data link) | No
Mobile IP home agent | Yes
MPLS | Yes
Multiclass multilink PPP | Yes (with fragmentation and reassembly; dynamic only)
Multilink Frame Relay | No
Multilink PPP | Yes (with fragmentation and reassembly; dynamic only)
Network Address Translation (NAT) | No
NBMA (multipoint ATM) | No
OSPF | Yes
Packet Mirroring | No
Packet over SONET | No
PPP | No
PPPoE | No
Remote loopback | No
RIP | Yes
Stateful Line Module Switchover | Yes (with ES2 4G LMs only)
Subscriber interfaces (static) | Yes (over GRE tunnels only)
Subscriber interfaces (dynamic) | Yes (over GRE tunnels only)
Transparent bridging | No
Tunnel-server ports | Yes (dedicated only)
Unified ISSU | Yes
Unified ISSU for Tunnel-server ports | Yes (dedicated only)
VPLS (network interfaces) | No
VPLS (virtual core interfaces) | Yes
VRRP | No