How do all incoming routes/gateway branchoffice routes look?
Martijn
-Oorspronkelijk bericht-
Van: Robert Kimble [mailto:[EMAIL PROTECTED]
Verzonden: donderdag 14 augustus 2003 16:57
Aan: [EMAIL PROTECTED]
Onderwerp: hsrp and icmp redirects [7:73972]
Ok.
I'll try to explain what
. Last night I
brought up the second msfc and set up hsrp between the two. everything
worked great here in the office last night. However, this morning our
branch offices had no connectivity to us. My boss went in and turned
off icmp redirects on the vlan interfaces on the second msfc and
everything
Wow.
It must've been a late night last night.
I figured out the problem.
It had nothing to do with icmp.
Thank you!
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, this morning
our branch offices had no connectivity to us.
My boss went in and turned off icmp redirects on the vlan interfaces on the
second msfc and everything was fine.
1. I thought icmp redirects were disabled automatically when you configure
hsrp on an interface.
2. How did turning off
you could block any ICMP redirects with a
simple access list(which creates other problems). It seems
that it might be more beneficial to get hardware that will
ultimately do the job you are trying to do via HSRP.
Regarding the issue of HSRP support for CBOS based platforms
(600 series Cisco de
You've really only got a few options available:
(1) Proxy ARP
(2) ICMP Redirects
(3) ICMP Router Discovery Protocol
(4) Run a routing protocol on the workstations
(5) Hot Standby Router Protocol
Of these, (4) is probably the least desirable, (3) is the least widely
supported and (5), as you
on the OS
and TCP/IP stack. My experience studying Windows and Macs shows that hosts
revert to their default gateway very quickly. In fact some versions of
Windows ignore ICMP redirects entirely. Others go back to the default when
an application is restarted. Others when the TCP/IP stack
A couple of more thoughts on the issue of ICMP redirects.
First, Edward Solomon had a pretty good concise analysis of the
options available in the environment you have and the
advantages and disadvantages to each:
(1) Proxy ARP
(2) ICMP Redirects
(3) ICMP Router Discovery Protocol
(4
When a host receives an ICMP redirect, it's my understanding that it
places a host route in the routing table for that destination. How long
does that route typically stay in the table? If the route is being
used, would it stay there indefinitely? Here's why I ask...
We have a 2620 and a 675
You can use the command 'no ip redirects' command on
the Interface configuration mode.
Muhammad Khalilulah
CCNP, MCSE
--- John Neiberger [EMAIL PROTECTED]
wrote:
When a host receives an ICMP redirect, it's my
understanding that it
places a host route in the routing table for that
/td/doc/product/software/ios121/
121newft/121t/121t3/dt_hsrpi.htm
On the other hand, you could block any ICMP redirects with a
simple access list(which creates other problems). It seems
that it might be more beneficial to get hardware that will
ultimately do the job you are trying to do via HSRP
Paul,
Thanks for your reply. How about helping me with this one:
When are ICMP redirects used in EIGRP?
Cisco routers do not trigger an ICMP redirect based upon which
routing protocol is in use. They have a defined set of
criteria that is based upon the following parameters:
http
I simply left them alone.
Dale
[=`)
From: Priscilla Oppenheimer [EMAIL PROTECTED]
Reply-To: Priscilla Oppenheimer [EMAIL PROTECTED]
To: Paul Werner [EMAIL PROTECTED],"[EMAIL PROTECTED]"
[EMAIL PROTECTED]
Subject: Re: ICMP redirects
Date: Mon, 09 Oct 2000 13:00:11 -0700
At 01:
On Mon, 09 Oct 2000, Priscilla Oppenheimer
([EMAIL PROTECTED]) wrote:
What does it mean to plumb host routes? I couldn't decode what
Microsoft is attempting to say in this article. If you can
explain it, that would be great. (The other articles did make
sense. Thanks for the URLs.)
I
On 9 Oct 2000 16:04:13 -0400, Priscilla Oppenheimer [EMAIL PROTECTED] wrote:
:At 01:59 AM 10/9/00, Paul Werner wrote:
:
:Listed above is what the Internet Standard specifies for proper
:operation. Let's bounce that against reality as we know it:
:
We have a situation where ICMP redirects might be very helpful, but I have a
practical question about them. In our situation, we'll have two routers
connected to a switch, the first having a T-1 connection, the second being a
backup router with DSL. All PCs will have the main router
Neiberger [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: ICMP Redirects
Date: Tue, 29 Aug 2000 11:23:42 -0700 (PDT)
We have a situation where ICMP redirects might be very helpful, but I have
a
practical question about them. In our situation, we'll have two routers
connected to a switch, the first
: ICMP Redirects
Date: Tue, 29 Aug 2000 11:23:42 -0700 (PDT)
We have a situation where ICMP redirects might be very helpful, but I
have
a
practical question about them. In our situation, we'll have two routers
connected to a switch, the first having a T-1 connection, the second
being
happily keep sending to thier default gateway. In this case, just the 1st router
config handles that.
John Neiberger [EMAIL PROTECTED] 08/29 11:23 AM
We have a situation where ICMP redirects might be very helpful, but I have a
practical question about them. In our situation, we'll have two routers
You could install different metric's in the routing tables so that if the
T-1 comes backup that route will be used
Duck
- Original Message -
From: John Neiberger [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, August 29, 2000 11:23 AM
Subject: ICMP Redirects
We have a situation
, 29 Aug 2000, John Neiberger wrote:
We have a situation where ICMP redirects might be very helpful, but I
have a
practical question about them. In our situation, we'll have two
routers
connected to a switch, the first having a T-1 connection, the second
being a
backup router with DSL
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