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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!
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<indicator name="Front">[[File:Menu-cog.svg|link=:Category:Line Settings|30px|Back up to the Broadband Line Settings]]</indicator>
== Line Rate ==
== Changing the Line Rate ==
This sets the line rate on your line:<br />
This change is applied the next time you connect (Re-PPP).
[[File:LineOptionsRateNew.png]]
Line Options:
At 100%, the LNS throttles you to exactly your line's capacity. At 110%, it will let through 110% of your line capacity, and allow the wholesaler's systems to buffer/drop the excess. At 95%, it lets through 95% of the line's capacity, so it will be unaffected by the wholesaler's buffering. Setting to less than 100% is advised for lines running VoIP and other real-time services as it means the downlink won't be filled. Lowering the rate from 100% to 95% will mean that there should be no network buffering within the wholesalers network - and may well reduce latency when downloading at the full rate of the line.▼
[[File:LineOptionsRate100.png|none|frame|At 100%, the LNS throttles you to exactly your line's capacity.]]
[[File:
▲
Example:
[[File:Cqm-ratedrop.png|none|frame|Changing the rate from 100% to 95%
== Stability Options ==
*Available on BT 21CN ADSL
These stability options refer to how
Usually we
=== MTU ===
[[File:LineOptionsMTU.png]]
Forces an MTU regardless of what is negotiated by your router.
'''More Info:''' MTU is negotiated upon connection. We usually like 1500 MTU, however, there can be situations where forcing 1492 MTU is required. For example, if your router negotiated 1500 MTU initially but you make a connection to a server that
=== TCPFix ===
[[File:LineOptionsTCPFix.png|none|frame|Modifies the MSS in TCP packets so that it does not exceed the MRU.]]
=== MRUFix ===
[[File:LineOptionsMRUFix.png|none|frame|When sending IP traffic, ignore the MRU we receive during PPP negotiation. This can save a LCP re-negotiation, which has been known to help OpenBSD based PPP.]]
=== LCPFix ===
[[File:LineOptionsLCPFix.png|none|frame|Re-negotiates PPP
'''More Info:''' During the PPP connection when your router initially syncs up and logs in to us, the PPP connection is passed via BT. Sometimes BT can change the MTU. With this option we will accept the PPP connection from BT, but will then
=== FastTimeout ===
[[File:LineOptionsRate100.png|none|frame|Uses an LCP Echo timeout of 10 seconds rather than 60 seconds before entering the LostCarrier state.]]
'''More Info:''' LCP echoes usually stop responding if the line has gone down. Our LCP monitoring, which produces the graphs, will drop the line if there are no replies after 60 seconds. When [[bonding]] or used in a fall-back setup, having a faster timeout is useful in order to fall-back quicker.
==LNS reset==
From time to time there are upgrades to the LNSs. This is usually to add new features, or fix bugs.
Upgrading an LNS is very quick, and it is only off line for under a second. However, it does mean stopping all of the sessions on the LNS, which means we will force your DSL service to reconnect. You can set the preferred time for the reconnect to happen, the default is 1AM.
{{CPbox|#Click on the line you want to view
#Click on your login (e.g. abc@a)}
#Set the 'LNS reset'. You can choose a time between 1AM and 6AM}}
We have more info here: [[LNS Switches]]
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