Protocol Independent Features
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Beta Beta
OmniAccess 5740 Unified Services Gateway CLI Configuration Guide
Alcatel-Lucent
C
ONFIGURE MAXIMUM PATHS
By default, OSPF, BGP, and Static routes can install a maximum number of 16
ECMP paths. And, RIP installs maximum 8 ECMP paths.
Static route maximum path limit is not configurable.
E
XAMPLE
ALU(config-router ospf 1)# maximum-paths 5
C
ONFIGURE TCP MSS
This feature enables to set the MSS (maximum segment size) option in the TCP
syn packets that traverse over the router to establish TCP connection.
MSS present in the TCP header is an announcement from the sender of the
packet, the maximum segment size, that it can receive for this connection. It can
be different for both the directions of data flow of a connection.
It is not always possible for the host machines to find out the MTU (Maximum
Transmission Unit) set on the underlying network as some of the ICMP packets
may be dropped for security reasons. There is a chance that the server disables
the fragmentation and the packet may get dropped by the intermediate routers
when there is a mismatch between MTU requirements. In order to get over this
problem, the intermediate routers can set the MSS value during TCP connection
initiation, so that the receiver is made aware of the intermediate router's limitation
of accepting packets.
E
XAMPLE
ALU(config-if GigabitEthernet3/0)# ip tcp adjust-mss 500
ALU(config-if GigabitEthernet3/0)# no ip tcp adjust-mss 500
Command (in RCM) Description
maximum-paths <number of
paths>
Enter this command in the Router
Configuration Mode.
This command is used to configure the
maximum number of ECMP paths to be
allowed in a routing table.
Command (in ICM) Description
ip tcp adjust-mss <24-1460> Enter this command in the Interface
Configuration Mode to set the MSS value
on the packets going out of an interface.
no ip tcp adjust-mss <24-1460> This command removes the MSS
configuration on the interface.
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