Question: What is the preferable method of EtherChannel load balancing when
traffic in either direction is destined for a router?
IPexpert Answer: A method based on L3 information (source/destination IP
address)
My answer: A method based on source L2 information (source MAC address)
You have the choice between the 2 answers.
Patrice Ngassam
Ceritified Cisco CCNP, CCDP, CCIP
Date: Thu, 1 Apr 2010 09:48:23 -0500
From: [email protected]
To: [email protected]; [email protected];
[email protected]
Subject: Re: [OSL | CCIE_RS] bgp weight
I am thinking number 2 assuming R2 has IP of 10.0.24.2 on the R2 - R4 link.
May need next-hop-self neighbor command on R4 peering with R3.
From: [email protected]
[mailto:[email protected]] On Behalf Of Dani
Arisandy
Sent: Thursday, April 01, 2010 12:37 AM
To: Taqdir
Singh; [email protected]
Subject: Re: [OSL | CCIE_RS] bgp
weight
Hi
Taqdir,
A
couple of things i want to point out. Don’t know wether it’s related to the
problem or no.
1.
No
iBGP session between R1 and R2
2.
What
IGP routing protocol did you use? Have you checked the next hop reachability
for
the second entry?
May
it helps! J
Regards,
Dani
A.
From:
[email protected]
[mailto:[email protected]]
On Behalf Of Taqdir Singh
Sent: 01 April 2010
12:14
To: [email protected]
Subject: [OSL |
CCIE_RS] bgp weight
Hi
all,
Please see my attached
diagram.. where I am advertising 10.0.12.0/24
on R1 and R2.
Assume R1 and R2 are
ISP
and R3 and R4 are customer
routers
on R3... I want to divert
the internal traffic to R4 using weight...but even after clearing session so
many times.. BGP next hop still points to R1..
I even used local pref on
R4...but still doesnt work...is there anything wrong in my config...or I m
missing any step..!
R3#sh ip bgp
BGP table version is 2, local
router ID is 10.0.35.3
Status codes: s suppressed, d damped, h history, *
valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? -
incomplete
Network Next
Hop Metric
LocPrf Weight Path
*> 10.0.12.0/24
10.0.13.1
0 0 100
i
*
i
10.0.24.2
0 200 100 100 i
R3#
R1#sh run | s bgp
router bgp 100
no
synchronization
bgp log-neighbor-changes
network
10.0.12.0
network 10.0.12.0 mask 255.255.255.0
neighbor
10.0.13.3 remote-as 200
no auto-summary
R1#
========================
R2#sh run | s bgp
router bgp 100
no
synchronization
bgp log-neighbor-changes
network 10.0.12.0
mask 255.255.255.0
neighbor 10.0.12.1 remote-as 100
neighbor
10.0.24.4 remote-as 200
no
auto-summary
R2#
==========================
R3#sh run | s bgp
router
bgp 200
no synchronization
bgp
log-neighbor-changes
neighbor 10.0.13.1 remote-as 100
neighbor
10.0.34.4 remote-as 200
neighbor 10.0.34.4 weight 100
no
auto-summary
R3#
==============================
R4#sh run | s
bgp
router bgp 200
no synchronization
bgp default
local-preference 200
bgp log-neighbor-changes
neighbor
10.0.24.2 remote-as 100
neighbor 10.0.34.3 remote-as 200
no
auto-summary
R4#
--
TAQDIR SINGH
+91 -9911709496
+91
-8010415988
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