On Tue, Jul 25, 2000 at 10:33:34AM -0400, De Troch, Bruno wrote:
> Does anyone knows how per-destination loadbalancing is done on 7513 with cef
> enabled?
> Suppose I have 2 static routes defined on 2 equal speed serial links. Is it
> possible to predict which link will be chosen if I know source and
> destination ip addresses/subnets?
No, it depends on the source/destination addressed hashed into some hash
buckets, as you can see below it depends on which hash bucket the source
address fall's into.
aegnxt1#sh ip cef 195.249.0.37 internal
195.249.0.37/32, version 79480, per-destination sharing
0 packets, 0 bytes
tag information set, shared
local tag: 71
via 195.249.6.254, Serial1/7:1, 28 dependencies
traffic share 1
next hop 195.249.6.254, Serial1/7:1
valid adjacency
tag rewrite with Se1/7:1, point2point, tags imposed: {}
via 195.249.6.250, Serial1/6:1, 27 dependencies
traffic share 1
next hop 195.249.6.250, Serial1/6:1
valid adjacency
tag rewrite with Se1/6:1, point2point, tags imposed: {}
0 packets, 0 bytes switched through the prefix
tmstats: external 0 packets, 0 bytes
internal 0 packets, 0 bytes
Load distribution: 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 (refcount 56)
Hash OK Interface Address Packets Tags imposed
1 Y Serial1/7:1 point2point 0 none
2 Y Serial1/6:1 point2point 0 none
3 Y Serial1/7:1 point2point 0 none
4 Y Serial1/6:1 point2point 0 none
5 Y Serial1/7:1 point2point 0 none
6 Y Serial1/6:1 point2point 0 none
7 Y Serial1/7:1 point2point 0 none
8 Y Serial1/6:1 point2point 0 none
9 Y Serial1/7:1 point2point 0 none
10 Y Serial1/6:1 point2point 0 none
11 Y Serial1/7:1 point2point 0 none
12 Y Serial1/6:1 point2point 0 none
13 Y Serial1/7:1 point2point 0 none
14 Y Serial1/6:1 point2point 0 none
15 Y Serial1/7:1 point2point 0 none
16 Y Serial1/6:1 point2point 0 none
/Jesper
-- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: Geek @ AS2109 (A much smaller network ;-)One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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