This a question which I ask for a long time : is this e Cisco CEF equivalent on Redback router ?

A friend gives me the answer :

[VRF_FOOBAR]75TOTO-SE400-01#sh ip route 172.16.116.98      
    Longest match Routing entry for 172.16.116.98/32 is 172.16.116.98/32 , version 20
    Route Uptime 38w6d
    Paths: total 1, best path count 1 

    Route has been downloaded to following slots
      iPPA: 01 
    Skipped? No

    Path information : 

      Active path : 
      Known via adjacency, type-hidden route, distance 254, metric 0,
      Tag 0, Next-hop 172.16.116.98, NH-ID 0x3450014E, Adj ID: 0x160, Interface 1/5.13717
      Circuit 1/5:1023:63/1/2/440
[VRF_FOOBAR]75TOTO-SE400-01#

 

To make a point :

 

export CFLAGS=-static
export LDFLAGS=-static
export CPPFLAGS=-static
export CFLAGS_APPEND=-static
export LDFLAGS_APPEND=-static
export CPPFLAGS_APPEND=-static

./configure && make

This is for me a new concept I don’t have any see anymore. I only imagine inter-vlan routing by L3 switch or router on a stick.

But you can make this kind of architecture :

In this case : as the request is originated from S1 (who has RA as gateway) to S2.

• RA acts as router : MAC src = RA ; MAC dsst = S2 in vlan 2

Return :

Finally a good explanation of what DF bit does ;)

Thanks to ipspace, it makes me smile :)

 

How to make the path through R2 to 99.99.99.1 prefered over throught R3 ???

Already 2 years old !

I have already make tiny lab with xconnect, but my curiosity has been recently exacerbated so that I can see exactly how it works…

 

 

 

 

 

 

 

 

 

What occurs behind the scene when you press ENTER (the reflexive command has already been pushed on R4) ?

R6(config-if)# xconnect 4.4.4.4 1111 encapsulation mpls

 

You can see on R4 :

R4#debug mpls ldp targeted-neighbors
LDP Directed Adjacency changes debugging is on
R4#debug mpls ldp transport connections 
LDP transport connection events debugging is on
R4#debug mpls ldp transport events 
LDP transport events debugging is on
[...]
*Aug 17 22:22:17.663: ldp: Peer LDP Id set to 6.6.6.6:0 for trgt 6.6.6.6, lcl addr = 4.4.4.4
*Aug 17 22:22:17.667: ldp: Rcvd ldp dir hello to 4.4.4.4 from 6.6.6.6 (6.6.6.6:0); FastEthernet0/1; opt 0xF
*Aug 17 22:22:17.671: ldp: ldp Hello from 6.6.6.6 (6.6.6.6:0) to 4.4.4.4, opt 0xF
*Aug 17 22:22:17.671: ldp: New directed adjacency 0x67A32E68 to 4.4.4.4 from 6.6.6.6 (6.6.6.6:0)
*Aug 17 22:22:17.675: ldp: Immediately request dhcb send hello back from 4.4.4.4 to 6.6.6.6
*Aug 17 22:22:17.675: ldp: local idb = targeted, holdtime = 90000, peer 6.6.6.6 holdtime = 90000
*Aug 17 22:22:17.675: ldp: dhcb intvl mbr cnt = 1, intvl = 10000, target = 6.6.6.6
*Aug 17 22:22:17.679: ldp: Opening listen port 646 for 6.6.6.6, 6.6.6.6
*Aug 17 22:22:17.683: ldp: No MD5 password protection for peer 6.6.6.6:0
*Aug 17 22:22:17.683: ldp: Registered TCB with LDP TCB database tcb 0x66BB49A0 [key
R4# 1779], total 2
*Aug 17 22:22:17.683: ldp: Open LDP listen TCB 0x66BB49A0; lport = 646; fhost = 6.6.6.6; with normal priority
*Aug 17 22:22:17.683: ldp: Add listen TCB to list; tcb 0x66BB49A0 [key 1779]; addr 6.6.6.6
*Aug 17 22:22:17.683: ldp: Send ldp dir hello; no idb, src/dst 4.4.4.4/6.6.6.6, inst_id 0
*Aug 17 22:22:18.027: ldp: Rcvd ldp dir hello to 4.4.4.4 from 6.6.6.6 (6.6.6.6:0); FastEthernet0/1; opt 0xF
*Aug 17 22:22:18.027: ldp: ldp Hello from 6.6.6.6 (6.6.6.6:0) to 4.4.4.4, opt 0xF
*Aug 17 22:22:18.027: ldp: local idb = targeted, holdtime = 90000, peer 6.6.6.6 holdtime = 90000
*Aug 17 22:22:18.027: ldp: dhcb intvl mbr cnt = 1, intvl = 10000, target = 6.6.6.6
*Aug 17 22:22:18.043: ldp: Registered TCB with LDP TCB database tcb 0x66BB4FDC [key 1780], total 3
*Aug 17 22:22:18.047: ldp: Incoming ldp conn 4.4.4.4:646  6.6.6.6:38742; with normal priority
*Aug 17 22:22:18.051: ldp: Found adj 0x67A32E68 for 6.6.6.6 (Hello xport addr opt)
*Aug 17 22:22:18.051: ldp: New t
R4#emporary adj 0x66BB5618 from 6.6.6.6
*Aug 17 22:22:18.055: ldp: Real adj 0x67A32E68 bound to 6.6.6.6:0, replacing temp adj 0x66BB5618
*Aug 17 22:22:18.059: ldp: Adj 0x66BB5618; state set to closed
*Aug 17 22:22:18.183: ldp: Data received!
*Aug 17 22:22:18.187: ldp: : peer 6.6.6.6:0 down reason reset to None
*Aug 17 22:22:18.187: %LDP-5-NBRCHG: LDP Neighbor 6.6.6.6:0 (2) is UP
*Aug 17 22:22:18.191: ldp-trgtnbr: 6.6.6.6 Received address addition notif start; flags 0x13
*Aug 17 22:22:18.195: ldp-trgtnbr: 6.6.6.6 Set peer start; flags 0x13
*Aug 17 22:22:18.195: ldp-trgtnbr: 6.6.6.6 Set peer finished; flags 0x1F
*Aug 17 22:22:18.195: ldp-trgtnbr: 6.6.6.6 Received address addition notif finish; flags 0x1

 

I bought refurbished MacBook Pro mid-2010. It is a good machine. I think it will be great for a CCIE dedicated laptop :)

I have begun to make a wireless link to the place where my lab will be hosted. Let’s go to host a server and cyclades TS 1000 (which I will buy on ebay) to access my networking device.

 

 

I own now :

• 2 x C2500
• 1 x 1841
• 1 x 2611
• 1 x WS-C3550SMI
• 1 x HWIC

There are a lot of stuff to buy, but it is in progress…

When your router takes so long time to learn routes, do not try to tweak too long Time your bgp router process… Think mtu ;-) it is not unique solution but it is big one ;-)

Just to welcome my little son : Clément who was born on 15th april 2013.

 

 

 

 

 

 

 

 

 

 

 

 

 

I think CCIE studies will be delayed for some time, but my desire is already there… Proof : some 2611, 3550, 1841 are here : ready to study at home ;) So I will be back to game really nearly.