i forgot to remember that i passed the 800 post marker this morning...
i noticed some of you looking at this old post about radix trees...
http://insearchofthecert.blogspot.com/2012/09/radix-tree.html
when i bumped into mtrie the other day digging into cef i thought of resurrecting it, but then went onto something else...
however:
http://www.google.com/patents/US7149216
a trie data structure is used to map a multicast packet header by a
sequence of nodes that match on destination address or source address.
or
A device for switching packets at high speed. For each packet, the A
device matches packet data with protocols, to determine how to switch
the packet.
Inventor: David R. Cheriton
Original Assignee: Cisco Technology, Inc.
cisco has quite a storied history of patents with this...
and yet another book i should read one day:
http://books.google.com/books?id=IDmpiQd5FwwC&pg=PA60&lpg=PA60&dq=mtrie+cisco&source=bl&ots=q6uuTZMdWE&sig=RrpCrfEfMZJOmPcO8CiQKFAQwCQ&hl=en&sa=X&ei=VHICUYvFL6LC0QG4-4C4BQ&ved=0CEMQ6AEwAQ#v=onepage&q=mtrie%20cisco&f=false
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Showing posts with label cisco. Show all posts
Showing posts with label cisco. Show all posts
Friday, January 25, 2013
Friday, October 12, 2012
junos and eigrp...
just as i thought...
an eigrp enterprise does not necessarily have to migrate to opsf to include juniper in a cisco environment... as i surmised in the last post, just set up an ospf interface on the eigrp router, connect that to the juniper equipment and redistribute on the cisco side...
an eigrp enterprise does not necessarily have to migrate to opsf to include juniper in a cisco environment... as i surmised in the last post, just set up an ospf interface on the eigrp router, connect that to the juniper equipment and redistribute on the cisco side...
r1#sh ip route eigrp
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets
D 1.1.1.0 [90/156160] via 10.1.1.2, 01:07:49, FastEthernet1/0
2.0.0.0/24 is subnetted, 1 subnets
D 2.2.2.0 [90/156160] via 10.1.1.2, 01:07:49, FastEthernet1/0
r1#sh ip eigrp neigh
EIGRP-IPv4 Neighbors for AS(1)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 10.1.1.2 Fa1/0 13 01:07:58 236 1416 0 4
r1 is connected to eigrp 1 on r2... i set up f1/1 on r1 to connect to a juniper router to bridge the gap, and redistributed eigrp into ospf, and vice versa...
root@junos1> show route
inet.0: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
192.168.1.0/24 *[Direct/0] 00:58:53
> via em0.0
192.168.1.2/32 *[Local/0] 00:58:53
Local via em0.0
224.0.0.5/32 *[OSPF/10] 00:51:44, metric 1
MultiRecv
after two way redistribution on the cisco side...
router eigrp 1
network 10.1.1.0 0.0.0.255
redistribute ospf 1 metric 1 0 1 1 1500
!
router ospf 1
redistribute eigrp 1 subnets
network 192.168.1.0 0.0.0.255 area 0
we have...
r2#sh ip route eigrp
Gateway of last resort is not set
D EX 192.168.1.0/24 [170/2560002560] via 10.1.1.1, 00:01:35, FastEthernet1/0
root@junos1> show route
inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
1.1.1.0/24 *[OSPF/150] 00:02:06, metric 20, tag 0
> to 192.168.1.1 via em0.0
2.2.2.0/24 *[OSPF/150] 00:02:06, metric 20, tag 0
> to 192.168.1.1 via em0.0
10.1.1.0/24 *[OSPF/150] 00:02:06, metric 20, tag 0
> to 192.168.1.1 via em0.0
192.168.1.0/24 *[Direct/0] 01:02:59
> via em0.0
192.168.1.2/32 *[Local/0] 01:02:59
Local via em0.0
224.0.0.5/32 *[OSPF/10] 00:55:50, metric 1
MultiRecv
root@junos1> ping 2.2.2.2
PING 2.2.2.2 (2.2.2.2): 56 data bytes
64 bytes from 2.2.2.2: icmp_seq=0 ttl=254 time=57.377 ms
64 bytes from 2.2.2.2: icmp_seq=1 ttl=254 time=62.538 ms
64 bytes from 2.2.2.2: icmp_seq=2 ttl=254 time=63.248 ms
^C
--- 2.2.2.2 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 57.377/61.054/63.248/2.616 ms
Sunday, April 8, 2012
ppdioo...
ppdioo... oooooooooooooooooooohhhhhhhhhhhhh
prepare- determine network requirements, network strategy, and conceptualize network architecture

what conceptualize?
to make an idea of; a concept of...
plan- compare the network as is to the proposed amendments. identify tasks, responsibilities, milestones and resources
design- create a detailed design

implement- without disturbing the current network, integrate equipment to achieve the design

implement: to put into effect
operate- everyday network operations; responses to issues that arise
optimize- get feedback from operations in order to make necessary adjustments
pp- whaaaaaaaaaaaat...

prepare- determine network requirements, network strategy, and conceptualize network architecture
what conceptualize?
to make an idea of; a concept of...
plan- compare the network as is to the proposed amendments. identify tasks, responsibilities, milestones and resources
design- create a detailed design
implement- without disturbing the current network, integrate equipment to achieve the design
implement: to put into effect
operate- everyday network operations; responses to issues that arise
optimize- get feedback from operations in order to make necessary adjustments
pp- whaaaaaaaaaaaat...
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