Bonding with Cisco IOS: Difference between revisions

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CecilWard

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Revision as of 20:52, 1 June 2014 (view source) DominicBodger (talk \| contribs) (→‎Bringing it all together with NAT, bonding and upstream in a single router.) ← Older edit		Latest revision as of 20:10, 26 February 2020 (view source) CecilWard (talk \| contribs) m (→‎Configuring your Dialer interfaces: typo)
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<indicator name="Front">[[File:Menu-bonding.svg\|link=:Category:Bonding\|30px\|Back up to the Bonding Page]]</indicator> [[Category:3rd Party Routers\|Cisco]] [[Category:Bonding Configuration\|Cisco]] After a few nights of meddling with my configuration, the following setup is working well for me. I would like to share it with the community. dialer pool 1 ppp chap hostname <yourAAISPuser>@a.1 ppp chap password 0 <~~yourPasword~~yourPassword> no cdp enable ! ip address <fromyourblock> <yoursubnet></nowiki> == Upstream load balancing using CEF == <nowiki>ip cef ! A brief overview: * The use of a VRF allows two routing domains. One for internet traffic (~~AISP~~AAISP) where the [[bonding]] is undertaken, a global domain where internal hosts are connected. * Two Vlans are configured on my device, one for internal NAT clients, another for external internet facing clients. * This configuration should be extended to include the use of ip filter in the AAISP vrf to block any incoming DNS requests. Caveats: * Routing between global and a vrf in IOS is unpleasant. This configuration relies on a use of a physical [[Ethernet]] patch between GigabitEthernet0/0 and GigabitEthernet0/1 for routing traffic between the global and AAISP ~~donain~~domain. This should be unnecessary with the use of a BGP export between global and the vrf, but I never got this working. Similarly the use of NVI and BVI was investigated (please let me know if you have a more elegant solution!). <nowiki>version 15.1 service timestamps log datetime msec no service password-encryption ~~service internal~~ ! hostname <yourhostname> ip name-server 217.169.20.20 ip name-server 217.169.20.21 ! ~~no [[IPv6\|ipv6]] cef~~ multilink bundle-name authenticated ! end</nowiki> == Changing target DSL noise margin within IOS == A little known trick, ~~which~~be Icareful amas ~~sure~~this ~~will~~can ~~upset~~affect ~~support!~~your line stability. <nowiki>service internal ! int ~~atm0~~ATM0/0/0 # Replace <num> with the desired offset in db dsl-noisemargin -<num>