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- About m.sobolev
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Member since
11-27-2007
58
Posts
5
Helpful
0
Solutions
03-08-2010
10:33 PM
What is the best way to set MTU? Choices are: Fe4 (WAN), Virtual-PPP1 (L2TP session interface) or Vlan1 (LAN).
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02-17-2010
10:36 PM
Hi there! Once again, let`s discuss VPN and MTU What we have? Ethernet LAN, L2TP to ISP and IPSec with AES crypto in tunnel mode. So protocols overhead is 40+73 bytes (L2TP + ESP). What is the best way to avoid fragmentation for all IP protocols on this link?
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12-22-2009
04:52 AM
Lests start again: We have to sites, A and B, we need layer 2 between them because server A and server B must be in single L2 domain, so we use L2 trunk and HSRP to reserve gateway. Site C have L3 connections with A and B, and we use OSPF for dynamic routing in this circle. Area 0 serves all cross sites links. Area 10 is servers farm (both A and B), lets say area 20 is for site C. The question is: what is the correct OSPF design between site A and B?
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12-22-2009
04:31 AM
You are correct except one moment - vlan 10 is ospf passive interface and switches are making neighborship only using single interface belonging to area 0.
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12-22-2009
04:26 AM
HSRP is needed by servers that must be placed in single L2 domain
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12-22-2009
02:00 AM
All switches are at different locations, so if switch A goes down, all hosts on this DC are unaccessible, and traffic flows must be rerouted to backup DC (B)
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12-21-2009
09:26 PM
You're right, on both switches I see area 10 routes as inter area routes (IA). I think your proposal to make a tunnel will work, but something tells me that there is a better, maybe clever design. Thank you!
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12-18-2009
05:55 AM
L2 trunk is key design feature, you can imagine switches are datacenters connected by dark fiber and we need shared L2 domain for server farms
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12-18-2009
05:44 AM
I dont get it I think switch A and switch B each run its own ospf process and both of them serves area 0 and area 10, but between them there is only area 0, so area 10 seems to be discontigous?
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12-18-2009
05:28 AM
Link between switches it L2 trunk, and OSPF runs on SVI, subnet /30, for example 10.32.0.0/30
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12-18-2009
04:17 AM
12-18-2009
04:16 AM
03-08-2010
What is the best way to set MTU? Choices are: Fe4 (WAN), Virtual-PPP1
(L2TP session interface) or Vl...
02-17-2010
Hi there! Once again, let`s discuss VPN and MTU What we have? Ethernet
LAN, L2TP to ISP and IPSec wi...
12-22-2009
Lests start again:We have to sites, A and B, we need layer 2 between
them because server A and serve...
12-22-2009
You are correct except one moment - vlan 10 is ospf passive interface
and switches are making neighb...
12-22-2009
All switches are at different locations, so if switch A goes down, all
hosts on this DC are unaccess...
12-21-2009
You're right, on both switches I see area 10 routes as inter area routes
(IA).I think your proposal ...
12-18-2009
L2 trunk is key design feature, you can imagine switches are datacenters
connected by dark fiber and...
12-18-2009
I dont get it I think switch A and switch B each run its own ospf
process and both of them serves ar...
12-18-2009
Link between switches it L2 trunk, and OSPF runs on SVI, subnet /30, for
example 10.32.0.0/30
Public Statistics
| Date Registered | 11-27-2007 05:18 AM |
| Date Last Visited | 08-18-2017 03:53 AM |
| Total Messages Posted | 58 |
| Total Helpful Votes Received | 5 |
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