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Configuration Guide - IP Service

S2720, S5700, and S6720 V200R013C00

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DHCP policy VLAN, DNS, mDNS gateway, mDNS relay, UDP Helper, IP performance optimization, IPv6, DHCPv6, IPv6 DNS, IPv6 over IPv4 tunnel, and IPv4 over IPv6 tunnel.
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Default Settings for IP Performance Optimization

Default Settings for IP Performance Optimization

Table 9-2 describes the default settings for IP performance optimization.

Table 9-2  Default settings for IP performance optimization

Parameter

Default Setting

Source IP address verification

Disabled.

Outgoing forwarding-plain IP packet fragmentation on an interface

Disabled.

Outgoing control-plain IP packet fragmentation

Disabled.

Load balancing mode for IP packet forwarding

Flow-based load balancing mode.

Processing for directed broadcast packets on an interface

Not forwarding.

IP error packet checking

Enabled.

Performing layer 2 forwarding for IP traffic during a ring network switchover

Enabled.

IPv4 Layer 3 unicast forwarding

Enabled.

Fast ICMP reply function

Enabled.

Discarding ICMP packets whose TTL values are 1

Disabled.

Discarding ICMP packets that carry options

Disabled.

Discarding IP packets with expired TTL

Disabled.

Discarding IP packets matching no routing entry

Enabled.

Discarding ICMP Destination Unreachable packets

Disabled.

Discarding IPv6 packets with specified extension headers

Disabled.

Receiving ICMP packets

Enabled.

Sending ICMP Host Unreachable packets

Enabled.

Sending ICMP Port Unreachable packets

Enabled.

Sending ICMP Protocol Unreachable packets

Enabled.

Sending an ICMP Destination Unreachable packet to an initiator when a tracert packet matches an IPv4 blackhole route

Disabled.

Format of ICMP Time Exceeded packets

ICMP Time Exceeded packets carry extension headers in compliant mode and original datagrams are of variable length.

Sending ICMP Redirect packets

Enabled.

Sending ICMP Time Exceeded packets on an interface

Enabled.

TCP SYN-Wait timer

75s.

TCP FIN-Wait timer

675s.

Socket receive/send buffer size

8k bytes.

Minimum MSS value for a TCP connection

216 bytes.

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Updated: 2019-04-20

Document ID: EDOC1100065678

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