From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Thu Oct 04 2007 - 17:41:09 ART
Cecil,
That's a marvellous question and one of those mysteries you need to solve to
pass the lab.
Next Hop is is a well known mandatory path attribute for BGP. If the next
hop for a route isn't reachable you get problems.
Us the next-hop-self command to force the router to advertise itself rather
than the external peer as the next hop for external networks. In the case
where this interface is known to your neighbor thanks to your IGP you should
have no problem reaching it.
Check out Halibi page 332 and the BGP table in Example 11-35.
HTH
Gary
----- Original Message -----
From: "Cecil Wilson" <Cecil.Wilson@flextronics.com>
To: "Joseph Brunner" <joe@affirmedsystems.com>; <ccielab@groupstudy.com>
Sent: Thursday, October 04, 2007 7:32 PM
Subject: BGP next hop self
> Hello GS
> Can explain the next hop self command in BGP? Or any links that has
> a good explanation of the command?
>
> Thanks
>
>
> Cecil G. Wilson
> IT Network Services
> Office: (901) 215-2710
> Cell: (901) 601-6201
> VoIP 104-2710
> FLEX Logistics
> cecil.wilson@flextronics.com
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Joseph Brunner
> Sent: Friday, August 24, 2007 7:02 PM
> To: ccielab@groupstudy.com
> Subject: what is in there...(ETHERTYPES)
>
> "only what you take with you"
>
>
>
> Rack13R4(config)#access-list 101 permit ip any any precedence ?
>
> <0-7> Precedence value
>
> critical Match packets with critical precedence (5)
>
> flash Match packets with flash precedence (3)
>
> flash-override Match packets with flash override precedence (4)
>
> immediate Match packets with immediate precedence (2)
>
> internet Match packets with internetwork control precedence (6)
>
> network Match packets with network control precedence (7)
>
> priority Match packets with priority precedence (1)
>
> routine Match packets with routine precedence (0)
>
>
>
>
>
> While this works great to remember IP PREC number to name (for those
> annoying wred configs) can anyone give me a similar helpful way to find
> out the ethertype of IP, ARP, PVST+, etc. from either capture/deny of
> traffic on a router/switch, etc.
>
>
>
> Thanks,
>
>
>
> Joe
>
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