Difference between revisions of "IPv6 Kernel: Isi /proc/sys/net/ipv6/"
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| − | == | + | ==Isi dari /proc/sys/net/ipv6/== |
| − | === | + | ===conf/default/*=== |
Change the interface-specific default settings. | Change the interface-specific default settings. | ||
| − | === | + | ===conf/all/*=== |
Change all the interface-specific settings. | Change all the interface-specific settings. | ||
| Line 11: | Line 11: | ||
Exception: “conf/all/forwarding” has a different meaning here | Exception: “conf/all/forwarding” has a different meaning here | ||
| − | ==== | + | ====conf/all/forwarding==== |
Type: BOOLEAN | Type: BOOLEAN | ||
| Line 23: | Line 23: | ||
If this value is 0, no IPv6 forwarding is enabled, packets never leave another interface, neither physical nor logical like e.g. tunnels. | If this value is 0, no IPv6 forwarding is enabled, packets never leave another interface, neither physical nor logical like e.g. tunnels. | ||
| − | === | + | ===conf/interface/*=== |
Change special settings per interface. | Change special settings per interface. | ||
| Line 29: | Line 29: | ||
The functional behaviour for certain settings is different depending on whether local forwarding is enabled or not. | The functional behaviour for certain settings is different depending on whether local forwarding is enabled or not. | ||
| − | ==== | + | ====accept_ra==== |
Type: BOOLEAN | Type: BOOLEAN | ||
| Line 37: | Line 37: | ||
Accept Router Advertisements, and autoconfigure this interface with received data. | Accept Router Advertisements, and autoconfigure this interface with received data. | ||
| − | ==== | + | ====accept_redirects==== |
Type: BOOLEAN | Type: BOOLEAN | ||
| Line 45: | Line 45: | ||
Accept Redirects sent by an IPv6 router. | Accept Redirects sent by an IPv6 router. | ||
| − | ==== | + | ====autoconf==== |
Type: BOOLEAN | Type: BOOLEAN | ||
| Line 53: | Line 53: | ||
Autoconfigure addresses using prefix information from router advertisements. | Autoconfigure addresses using prefix information from router advertisements. | ||
| − | ==== | + | ====dad_transmits==== |
Type: INTEGER | Type: INTEGER | ||
| Line 61: | Line 61: | ||
The amount of Duplicate Address Detection probes to send. | The amount of Duplicate Address Detection probes to send. | ||
| − | ==== | + | ====forwarding==== |
Type: BOOLEAN | Type: BOOLEAN | ||
| − | + | Default: FALSE if global forwarding is disabled (default), otherwise TRUE | |
Configure interface-specific Host/Router behaviour. | Configure interface-specific Host/Router behaviour. | ||
| Line 91: | Line 91: | ||
Redirects are ignored. | Redirects are ignored. | ||
| − | ==== | + | ====hop_limit==== |
Type: INTEGER | Type: INTEGER | ||
| Line 99: | Line 99: | ||
Default Hop Limit to set. | Default Hop Limit to set. | ||
| − | ==== | + | ====mtu==== |
Type: INTEGER | Type: INTEGER | ||
| Line 107: | Line 107: | ||
Default Maximum Transfer Unit | Default Maximum Transfer Unit | ||
| − | ==== | + | ====router_solicitation_delay==== |
Type: INTEGER | Type: INTEGER | ||
| Line 115: | Line 115: | ||
Number of seconds to wait after interface is brought up before sending Router Solicitations. | Number of seconds to wait after interface is brought up before sending Router Solicitations. | ||
| − | ==== | + | ====router_solicitation_interval==== |
Type: INTEGER | Type: INTEGER | ||
| Line 123: | Line 123: | ||
Number of seconds to wait between Router Solicitations. | Number of seconds to wait between Router Solicitations. | ||
| − | ===== | + | =====router_solicitations==== |
Type: INTEGER | Type: INTEGER | ||
| Line 131: | Line 131: | ||
Number of Router Solicitations to send until assuming no routers are present. | Number of Router Solicitations to send until assuming no routers are present. | ||
| − | === | + | ===neigh/default/*=== |
Change default settings for neighbor detection and some special global interval and threshold values: | Change default settings for neighbor detection and some special global interval and threshold values: | ||
| − | ==== | + | ====gc_thresh1==== |
Type: INTEGER | Type: INTEGER | ||
| Line 336: | Line 336: | ||
More to be filled. | More to be filled. | ||
| − | ==== | + | ====max_size==== |
Type: INTEGER | Type: INTEGER | ||
Revision as of 15:26, 28 June 2013
Isi dari /proc/sys/net/ipv6/
conf/default/*
Change the interface-specific default settings.
conf/all/*
Change all the interface-specific settings.
Exception: “conf/all/forwarding” has a different meaning here
conf/all/forwarding
Type: BOOLEAN
This enables global IPv6 forwarding between all interfaces.
In IPv6 you can't control forwarding per device, forwarding control has to be done using IPv6-netfilter (controlled with ip6tables) rulesets and specify input and output devices (see Firewalling/Netfilter6 for more). This is different to IPv4, where you are able to control forwarding per device (decision is made on interface where packet came in).
This also sets all interfaces' Host/Router setting 'forwarding' to the specified value. See below for details. This referred to as global forwarding.
If this value is 0, no IPv6 forwarding is enabled, packets never leave another interface, neither physical nor logical like e.g. tunnels.
conf/interface/*
Change special settings per interface.
The functional behaviour for certain settings is different depending on whether local forwarding is enabled or not.
accept_ra
Type: BOOLEAN
Functional default: enabled if local forwarding is disabled. disabled if local forwarding is enabled.
Accept Router Advertisements, and autoconfigure this interface with received data.
accept_redirects
Type: BOOLEAN
Functional default: enabled if local forwarding is disabled. disabled if local forwarding is enabled.
Accept Redirects sent by an IPv6 router.
autoconf
Type: BOOLEAN
Functional default: enabled if accept_ra_pinfo is enabled. disabled if accept_ra_pinfo is disabled.
Autoconfigure addresses using prefix information from router advertisements.
dad_transmits
Type: INTEGER
Default: 1
The amount of Duplicate Address Detection probes to send.
forwarding
Type: BOOLEAN
Default: FALSE if global forwarding is disabled (default), otherwise TRUE
Configure interface-specific Host/Router behaviour.
Note: It is recommended to have the same setting on all interfaces; mixed router/host scenarios are rather uncommon.
Value FALSE: By default, Host behaviour is assumed. This means:
IsRouter flag is not set in Neighbour Advertisements.
Router Solicitations are being sent when necessary.
If accept_ra is TRUE (default), accept Router Advertisements (and do autoconfiguration).
If accept_redirects is TRUE (default), accept Redirects.
Value TRUE: If local forwarding is enabled, Router behaviour is assumed. This means exactly the reverse from the above:
IsRouter flag is set in Neighbour Advertisements.
Router Solicitations are not sent.
Router Advertisements are ignored.
Redirects are ignored.
hop_limit
Type: INTEGER
Default: 64
Default Hop Limit to set.
mtu
Type: INTEGER
Default: 1280 (IPv6 required minimum)
Default Maximum Transfer Unit
router_solicitation_delay
Type: INTEGER
Default: 1
Number of seconds to wait after interface is brought up before sending Router Solicitations.
router_solicitation_interval
Type: INTEGER
Default: 4
Number of seconds to wait between Router Solicitations.
=router_solicitations
Type: INTEGER
Default: 3
Number of Router Solicitations to send until assuming no routers are present.
neigh/default/*
Change default settings for neighbor detection and some special global interval and threshold values:
gc_thresh1
Type: INTEGER
Default: 128
More to be filled.
11.2.4.2. gc_thresh2
Type: INTEGER
Default: 512
More to be filled.
11.2.4.3. gc_thresh3
Type: INTEGER
Default: 1024
Tuning parameter for neighbour table size.
Increase this value if you have a lot of interfaces and problem with routes start to act mysteriously and fail. Or if a running Zebra (routing daemon) reports:
ZEBRA: netlink-listen error: No buffer space available, type=RTM_NEWROUTE(24), ¬ seq=426, pid=0
11.2.4.4. gc_interval
Type: INTEGER
Default: 30
More to be filled.
11.2.5. neigh/interface/*
Change special settings per interface for neighbor detection.
11.2.5.1. anycast_delay
Type: INTEGER
Default: 100
More to be filled.
11.2.5.2. gc_stale_time
Type: INTEGER
Default: 60
More to be filled.
11.2.5.3. proxy_qlen
Type: INTEGER
Default: 64
More to be filled.
11.2.5.4. unres_qlen
Type: INTEGER
Default: 3
More to be filled.
11.2.5.5. app_solicit
Type: INTEGER
Default: 0
More to be filled.
11.2.5.6. locktime
Type: INTEGER
Default: 0
More to be filled.
11.2.5.7. retrans_time
Type: INTEGER
Default: 100
More to be filled.
11.2.5.8. base_reachable_time
Type: INTEGER
Default: 30
More to be filled.
11.2.5.9. mcast_solicit
Type: INTEGER
Default: 3
More to be filled.
11.2.5.10. ucast_solicit
Type: INTEGER
Default: 3
More to be filled
11.2.5.11. delay_first_probe_time
Type: INTEGER
Default: 5
More to be filled.
11.2.5.12. proxy_delay
Type: INTEGER
Default: 80
More to be filled.
11.2.6. route/*
Change global settings for routing.
11.2.6.1. flush
Removed in newer kernel releases - more to be filled.
11.2.6.2. gc_interval
Type: INTEGER
Default: 30
More to be filled.
11.2.6.3. gc_thresh
Type: INTEGER
Default: 1024
More to be filled.
11.2.6.4. mtu_expires
Type: INTEGER
Default: 600
More to be filled.
11.2.6.5. gc_elasticity
Type: INTEGER
Default: 0
More to be filled.
11.2.6.6. gc_min_interval
Type: INTEGER
Default: 5
More to be filled.
11.2.6.7. gc_timeout
Type: INTEGER
Default: 60
More to be filled.
11.2.6.8. min_adv_mss
Type: INTEGER
Default: 12
More to be filled.
max_size
Type: INTEGER
Default: 4096
More to be filled.