Cisco Cisco Packet Data Gateway (PDG)
access-link
Configures IP fragmentation processing over the Access-link (PPP, GTP etc.).
Product
GGSN
P-GW
SAEGW
Privilege
Security Administrator, Administrator
Command Modes
Exec > Global Configuration > Context Configuration > APN Configuration
configure > context context_name > apn apn_name
Entering the above command sequence results in the following prompt:
[
context_name
]
host_name
(config-apn)#
Syntax Description
access-link ip-fragmentation { df-fragment-and-icmp-notify | df-ignore | normal }
default access-link ip-fragmentation
default access-link ip-fragmentation
df-fragment-and-icmp-notify
Default: Disabled
Partially ignores the DF bit; fragments and forwards the packet, but also returns an ICMP error message to
the source of the packet. The number of ICMP errors sent like this is rate-limited to one ICMP error packet
per second per session.
the source of the packet. The number of ICMP errors sent like this is rate-limited to one ICMP error packet
per second per session.
df-ignore
Default: Enabled
Ignores the DF (Don't Fragment) bit setting; fragments and forwards the packet over the access link. This is
the default behavior.
the default behavior.
normal
Default: Disabled
Drops the packet and sends an ICMP unreachable message to the source of packet.
Command Line Interface Reference, Modes A - B, StarOS Release 19
1526
APN Configuration Mode Commands
access-link