From: Scott Morris (swm@emanon.com)
Date: Wed Oct 22 2008 - 23:22:55 ARST
I was pondering that after I hit send. :)
The original thought was that bgp neighbors are set based on explicit
update-sources. So if your other router was expecting the session to come
from the loopback instead of the directly attached router link then it may
not peer up.
On the flip side, I'm pretty sure that's a BGP check, not a TCP filtering of
any sort, so you should still see the session start there regardless.
But really, it seemed like a good idea at the time! (grin)
Scott
_____
From: Mahesh Shivaswamy [mailto:maheshs.cisco@gmail.com]
Sent: Wednesday, October 22, 2008 9:01 PM
To: swm@emanon.com
Cc: Scott M Vermillion; Cisco certification
Subject: Re: Telnet on port 179
The subnet b/w R4 & SW1 is 154.1.47.0/24, When I telnet from R4-> SW1 it
will use the outgoing interface IP 154.1.47.4, wondering why will I need to
worry abt update-source address here ?
rgds
Mahesh
On Wed, Oct 22, 2008 at 7:30 PM, Scott Morris <swm@emanon.com> wrote:
And are you using the same update-source address?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott M Vermillion
Sent: Wednesday, October 22, 2008 8:04 PM
To: 'Mahesh Shivaswamy'; 'Cisco certification'
Subject: RE: Telnet on port 179
Do you have an appropriate neighbor statement?
SW1#telnet 1.0.0.2 179
Trying 1.0.0.2, 179 ...
% Connection refused by remote host
SW2(config)#ip routing
SW2(config)#router bgp 100
SW1#telnet 1.0.0.2 179
Trying 1.0.0.2, 179 ...
% Connection refused by remote host
SW2(config-router)#neigh 1.0.0.1 remote-as 100
SW1#telnet 1.0.0.2 179
Trying 1.0.0.2, 179 ... Open
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Mahesh Shivaswamy
Sent: Wednesday, October 22, 2008 5:55 PM
To: Cisco certification
Subject: Telnet on port 179
Hi,
When I telnet on port 23 between R4 & SW1 its fine, but when I telnet on
port 179 I get a connection refuse msg, there is no access list on SW1.
R4#telnet 154.1.47.7
Trying 154.1.47.7 ... Open
User Access Verification
Password:
R4#telnet 154.1.47.7 179
Trying 154.1.47.7, 179 ...
% Connection refused by remote host
SW1#
1d11h: tcp0: I LISTEN 154.1.47.4:18645 154.1.47.7:179 seq 2990396955
OPTS 4 SYN WIN 4128
1d11h: TCP: sent RST to 154.1.47.4:18645 from 154.1.47.7:179
SW1#sh run int vlan 47
Building configuration...
Current configuration : 61 bytes
!
interface Vlan47
ip address 154.1.47.7 255.255.255.0
end
Any suggestion what is the issue, this is the only way I can test, any
suggestion ?
rgds
Mahesh
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