Services Overview
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FD 100/320Gbps NT and FX NT IHub Services Guide
3HH-11985-AAAA-TQZZA Issue: 13
with 95 sessions for each type such as SLQ, BLQ IPv4, and BLQ IPv6, and with 5
queries x 19 LTs. IHUB supports lease query messages generated by the LT, and
legacy behavior of forwarding LQ packets will be maintained. For bulk lease query,
there will be system-wide support for a maximum of 8 TCP servers (first 8 configured
servers).
3.13 DHCP Remote ID Check
DHCP Remote ID Check allows ISAM to enable or disable the remote ID verification.
Remote ID will be verified when local proxy ARP is enabled.
When a ping between two CPEs is initiated, an ARP request is sent to ONU and, if
the ONU does not have the L2 flooding capacity, then to ISAM. If local proxy ARP is
enabled in ISAM, the DHCP remote ID of the source and destination CPEs are
verified. If both CPEs have the same remote ID, the ARP packets are dropped. When
DHCP remote ID check is disabled, ISAM does not drop the ARP packets and
responds to the request with its MAC address.
3.14 GRE Tunnels Overview
ISAM supports tunneling for unicast IPv4 traffic using GRE-IPv4 encapsulation when
traveling on IPv4 static routes with nexthop as the tunnel endpoint.
Figure 8 Tunnels using GRE-IPv4 encapsulation
Tunnel-1 is a logical object in ISAM.
The following three interfaces form the GRE tunnel as it travels to the endpoint:
• The interface to the Internet
• The tunnel destination can only be reached using a SAP
• This interface provides IP reachability
Internet
12.47.10.0/24
Tunnel-1
Tunnel src IP:
164.251.12.1/30
sap tunnel-1.private:200
10.0.0.2/30
VPRN 1
C
sap tunnel-1.public:201
164.251.12.2/30
12.47.10.1/24
IES 21
B
A
Tunnel-1
Tunnel src IP:
164.251.12.2/3
sap tunnel-1.private:200
10.0.0.1/30
VPRN 1
C
sap tunnel-1.public:201
164.251.12.1/30
12.47.10.2/24
IES 21
B
A
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