Vey Nicely said.
Additionally, you can combine this with ur security requirements :-)
Date: Tue, 18 Aug 2009 08:37:55 -0700
From: [email protected]
To: [email protected]
Subject: Re: [OSL | CCIE_RS] CCIE_RS Digest, Vol 43, Issue 92
Taqdir Singh,
In BGP the two neighbors will have a client/server relation, the router using
the high port as source is the client and the router using the well-known port
(179) as the source is the server; remember, initially they will both establish
the bgp session because they both have a neighbor command configured, but later
the connection that was initiated by the router with a lower RID will be torn
down, so there will only be a single session between the 2 routers
But yes, both routers listen to port 179, they both have the capability of
becoming a server or a client. Remember that you can control as to which router
becomes the client and which router becomes the server. I hope this helped.
On Tue, Aug 18, 2009 at 7:14 AM, <[email protected]> wrote:
Send CCIE_RS mailing list submissions to
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When replying, please edit your Subject line so it is more specific
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Today's Topics:
1. Re: BGP listens on TCP port 179 (prakash patel)
2. RIP and BGP are application layer protocol (Taqdir Singh)
3. Re: Frame Relay MultiLink Problem (Rick Mur)
4. Re: Frame Relay MultiLink Problem (Tahir Bashir)
5. Re: RIP and BGP are application layer protocol (prakash patel)
6. Re: RIP and BGP are application layer protocol (Taqdir Singh)
----------------------------------------------------------------------
Message: 1
Date: Tue, 18 Aug 2009 09:48:46 -0400
From: prakash patel <[email protected]>
Subject: Re: [OSL | CCIE_RS] BGP listens on TCP port 179
To: <[email protected]>, <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
NO
Date: Tue, 18 Aug 2009 19:08:53 +0530
From: [email protected]
To: [email protected]
Subject: [OSL | CCIE_RS] BGP listens on TCP port 179
R0-----R1
R0#sh run | s bgp
router bgp 1
no synchronization
bgp log-neighbor-changes
neighbor 10.10.10.2 remote-as 2
no auto-summary
R0#
R1#sh run | s bgp
router bgp 2
no synchronization
bgp log-neighbor-changes
neighbor 10.10.10.1 remote-as 1
no auto-summary
R1#
R0#show tcp | in port
Local host: 10.10.10.1, Local port: 179
Foreign host: 10.10.10.2, Foreign port: 23818
R1#show tcp | i port
Local host: 10.10.10.2, Local port: 23818
Foreign host: 10.10.10.1, Foreign port: 179
BGP listens on TCP port 179 , according to above output I see only router R0 is
listening on port 179.. but R1 is on 2318. Shouldn't be we have separate TCP
connection on R1 with listening port 179 ?
Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
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------------------------------
Message: 2
Date: Tue, 18 Aug 2009 19:20:16 +0530 (IST)
From: Taqdir Singh <[email protected]>
Subject: [OSL | CCIE_RS] RIP and BGP are application layer protocol
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Can any1 please clear , how RIP and BGP are application layer protocols ?
Why BGP?is so made to carry the E-BGP next-hop in?internal AS ?
?Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
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------------------------------
Message: 3
Date: Tue, 18 Aug 2009 16:00:54 +0200
From: Rick Mur <[email protected]>
Subject: Re: [OSL | CCIE_RS] Frame Relay MultiLink Problem
To: Tahir Bashir <[email protected]>
Cc: CCIE RS_FORUM <[email protected]>
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="windows-1252"
Multilink Frame Relay means bundling frame-relay interfaces. You should
connect the serial interfaces to the FR switch as you normally would, but
the switch should support it. I don't know if Dynamips supports this, but
you can try the configuration using 2 or more back-to-back serial links.
Example:
!
interface Serial0/1
encapsulation frame-relay mfr 1
no shutdown
!
interface Serial0/2
encapsulation frame-relay mfr 1
no shutdown
!
interface mfr1
no keep-alive
no ip address
!
interface mfr1.1 point-to-point
ip address 10.0.0.1 255.255.255.0
frame-relay interface-dlci 101
!
--
Regards,
Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Juniper JNCIA-ER & JNCIA-EX
MCSA:Messaging, MCSE
Sr. Support Engineer ? IPexpert, Inc.
URL: http://www.IPexpert.com
On Tue, Aug 18, 2009 at 2:58 PM, Tahir Bashir <[email protected]>wrote:
> Hi All,
>
> I am getting some problems in Multilink Frame Relay design on GNS3. My MFR
> links are down. I would like to know the way how to connect the Multilink
> with FR Switch and mapping entries in FR Switch.
>
>
>
>
>
> Regards,
>
> Tahir Bashir
>
>
> ------------------------------
> check out the rest of the Windows Live?. More than mail?Windows Live? goes
> way beyond your inbox. More than
> messages<http://www.microsoft.com/windows/windowslive/>
>
> _______________________________________________
> For more information regarding industry leading CCIE Lab training, please
> visit www.ipexpert.com
>
>
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------------------------------
Message: 4
Date: Tue, 18 Aug 2009 20:03:33 +0600
From: Tahir Bashir <[email protected]>
Subject: Re: [OSL | CCIE_RS] Frame Relay MultiLink Problem
To: <[email protected]>
Cc: CCIE RS_FORUM <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="windows-1252"
Hi Rick,
I have following configuration on my HUB Router for Multilink FR. But I m
getting mfr interface down and serial interfaces are also down.
interface MFR1
ip address 100.100.100.2 255.255.255.0
frame-relay map ip 100.100.100.2 204
frame-relay map ip 100.100.100.4 204 broadcast
frame-relay map ip 100.100.100.5 205 broadcast
frame-relay map ip 100.100.100.6 206 broadcast
no frame-relay inverse-arp
!
interface Serial1/0
no ip address
encapsulation frame-relay MFR1
serial restart-delay 0
no arp frame-relay
!
interface Serial1/1
no ip address
encapsulation frame-relay MFR1
serial restart-delay 0
no arp frame-relay
Regards,
Tahir Bashir
Date: Tue, 18 Aug 2009 16:00:54 +0200
Subject: Re: [OSL | CCIE_RS] Frame Relay MultiLink Problem
From: [email protected]
To: [email protected]
CC: [email protected]
Multilink Frame Relay means bundling frame-relay interfaces. You should connect
the serial interfaces to the FR switch as you normally would, but the switch
should support it. I don't know if Dynamips supports this, but you can try the
configuration using 2 or more back-to-back serial links.
Example:
!
interface Serial0/1
encapsulation frame-relay mfr 1
no shutdown
!
interface Serial0/2
encapsulation frame-relay mfr 1
no shutdown
!
interface mfr1
no keep-alive
no ip address
!
interface mfr1.1 point-to-point
ip address 10.0.0.1 255.255.255.0
frame-relay interface-dlci 101
!
--
Regards,
Rick Mur
CCIE2 #21946 (R&S / Service Provider)
Juniper JNCIA-ER & JNCIA-EX
MCSA:Messaging, MCSE
Sr. Support Engineer ? IPexpert, Inc.
URL: http://www.IPexpert.com
On Tue, Aug 18, 2009 at 2:58 PM, Tahir Bashir <[email protected]> wrote:
Hi All,
I am getting some problems in Multilink Frame Relay design on GNS3. My MFR
links are down. I would like to know the way how to connect the Multilink with
FR Switch and mapping entries in FR Switch.
Regards,
Tahir Bashir
check out the rest of the Windows Live?. More than mail?Windows Live? goes way
beyond your inbox. More than messages
_______________________________________________
For more information regarding industry leading CCIE Lab training, please visit
www.ipexpert.com
_________________________________________________________________
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------------------------------
Message: 5
Date: Tue, 18 Aug 2009 10:01:20 -0400
From: prakash patel <[email protected]>
Subject: Re: [OSL | CCIE_RS] RIP and BGP are application layer
protocol
To: <[email protected]>, <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
RIP is the oldest one where some hosts can learn RIP routes from router. ON
host, RIP has to run as application ..am I right?
BGP can change by doing "next-hop-self" so you have that option.
Date: Tue, 18 Aug 2009 19:20:16 +0530
From: [email protected]
To: [email protected]
Subject: [OSL | CCIE_RS] RIP and BGP are application layer protocol
Can any1 please clear , how RIP and BGP are application layer protocols ?
Why BGP is so made to carry the E-BGP next-hop in internal AS ?
Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
Love Cricket? Check out live scores, photos, video highlights and more. Click
here.
_________________________________________________________________
Get back to school stuff for them and cashback for you.
http://www.bing.com/cashback?form=MSHYCB&publ=WLHMTAG&crea=TEXT_MSHYCB_BackToSchool_Cashback_BTSCashback_1x1
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------------------------------
Message: 6
Date: Tue, 18 Aug 2009 19:44:54 +0530 (IST)
From: Taqdir Singh <[email protected]>
Subject: Re: [OSL | CCIE_RS] RIP and BGP are application layer
protocol
To: prakash patel <[email protected]>,
[email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Hi Prakash
I know?we can use next hop self . but that is not answer to my question..
my question....is why BGP?is so made to carry next hop of ebgp in internal AS ??
AS100(C)----e-bgp---AS200(A)----ibgp----AS200(B)
Why?BGP was not made so?that router A automatically advertise routes to B with
next hop of itself.. as in case of all the other routing protocols ?
and Why BGP is application layer ?
?Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
________________________________
From: prakash patel <[email protected]>
To: [email protected]; [email protected]
Sent: Tuesday, 18 August, 2009 7:31:20 PM
Subject: RE: [OSL | CCIE_RS] RIP and BGP are application layer protocol
RIP is the oldest one where some hosts can learn RIP?routes from router. ON
host, RIP has to run as application ..am I right?
?
BGP?can?change by doing "next-hop-self" so?you have that option.
?
?
________________________________
Date: Tue, 18 Aug 2009 19:20:16 +0530
From: [email protected]
To: [email protected]
Subject: [OSL | CCIE_RS] RIP and BGP are application layer protocol
Can any1 please clear , how RIP and BGP are application layer protocols ?
Why BGP?is so made to carry the E-BGP next-hop in?internal AS ?
?Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
________________________________
Love Cricket? Check out live scores, photos, video highlights and more. Click
here.
________________________________
Get back to school stuff for them and cashback for you. Try BingT now.
See the Web's breaking stories, chosen by people like you. Check out
Yahoo! Buzz. http://in.buzz.yahoo.com/
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End of CCIE_RS Digest, Vol 43, Issue 92
***************************************
--
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining.com
Sr. Technical Instructor
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