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import-prefixes
Syntax
[no] import-prefixes policy-name
Context
config>router>ldp>peer-parameters>peer
Description
This command configures the import FEC prefix policy to determine which prefixes received from
this LDP peer are imported and installed by LDP on this node. If resolved these FEC prefixes are then
re-distributed to other LDP and T-LDP peers. A FEC prefix that is filtered out (deny) will not be
imported. A FEC prefix that is filtered in (accept) will be imported.
If no import policy is specified, the node will import all prefixes received from this LDP/T-LDP peer.
This policy is applied in addition to the global LDP policy and targeted session policy.
Policies are configured in the config>router>policy-options context. A maximum of five policy
names can be specified. Peer address has to be the peer LSR-ID address.
The no form of the command removes the policy from the configuration.
Default
no import-prefixes - no import route policy is specified
Parameters
policy-name — The import-prefix route policy name. Allowed values are any string up to 32
path-mtu-discovery
Syntax
path-mtu-discovery
no path-mtu-discovery
Context
config>router>ldp>peer-parameters>peer
Description
This command enables Path MTU discovery for the associated TCP connections. When enabled, the
MTU for the associated TCP session is initially set to the egress interface MTU. The DF bit is also set
so that if a router along the path of the TCP connection cannot handle a packet of a particular size
without fragmenting, it sends back and ICMP message to set the path MTU for the given session to a
lower value that can be forwarded without fragmenting.
Default
no path-mtu-discovery
ttl-security
Syntax
ttl-security min-ttl-value
no ttl-security
Context
config>router>ldp>peer-parameters>peer
Description
This command configures TTL security parameters for incoming packets. When the feature is
enabled, BGP/LDP will accept incoming IP packets from a peer only if the TTL value in the packet is
greater than or equal to the minimum TTL value configured for that peer. Peer address has to be the
TCP session transport address.
7950 SR OS MPLS Configuration Guide
characters long composed of printable, 7-bit ASCII characters excluding double quotes. If the
string contains spaces, use double quotes to delimit the start and end of the string. The specified
name(s) must already be defined
LDP Configuration Commands
Page 421
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