can you share discussion link about software limitation or equipment. I would like to know of options Cisco equipment to purchase or software that will help me get the most out of 100 Mbps WAN link on a tunnel GRE? ... View more

Hi terence, what about bandwidth limitation, so how much bandwidth max could I get on my GRE Tunnel using a 2801 router? I will enable PMTUD as I was just reading it about it earlier, do I add on both routers and would you please share the syntex? ... View more

It was defenetly something wrong with the firewall and my core switches, firewall statefull inspection so I had to change my topology in order for the firewall to have only 1 inside interface and still connect both Core switches. All is working fine now and thanks for your support Milan. New topology attached ... View more

Do you think that perhaps it could be asymmetric routing happening on my Firewall, Im using ASA 5520 (8.4). How could could I go about making sure it is not asymmetric routing according to my topology? ... View more

Hi Milan , Im running tests on subnet 7 that is why I only added a few subnets to ospf. I will upgrade the switches with same IOS and try again. ... View more

im using Cat image on my layer 3 switches, I was wondering if I could use the same image on both switches because they are using different ones. starting to think about  bug. ... View more

1. when Core 2 asumes active for subnets under Core 1 all works fine and users are still able to access internet. but when Core 1 restores and assumes back the role as active users from subnet get time out and stop accessing the net. 2. OSPF between devices, firewall and 2 core switches exchange routes just fine. 3. no message log at all. Im starting to think it has to do with the image, because subnets on CORE 2 works just fine when active or standby. ... View more

could it be loop happening on the network? but for subnets  on my core_2 does not happen when track interface goes down and restores, all works fine. Im running ospf as a routing protocol on my 2 core switches upwards on the topology, on my firewall I have the 2 interfaces facing Core switches as inside. ... View more

My trace of a subnet that is using CORE 1 as hsrp gateway before interface goes down C:\Users\lucas>tracert -d 8.8.8.8 Tracing route to 8.8.8.8 over a maximum of 30 hops   1    <1 ms     1 ms     1 ms  192.168.9.1   2     1 ms     1 ms     1 ms  10.0.100.1   3     1 ms     1 ms     1 ms  10.0.101.1   4     4 ms     2 ms     1 ms  192.168.1.1   5     *        *        *     Request timed out.   6    97 ms    78 ms    82 ms  10.16.16.3   7    74 ms   133 ms    92 ms  10.16.17.1   8   245 ms   217 ms   213 ms  41.72.61.70   9   281 ms   238 ms   273 ms  197.149.148.105  10   359 ms   313 ms   272 ms  197.149.151.4  11   337 ms   327 ms   327 ms  185.148.112.22  12   324 ms   353 ms   357 ms  193.136.250.20  13   321 ms   293 ms   317 ms  216.239.49.242  14   320 ms   357 ms   347 ms  209.85.245.237  15   293 ms   307 ms   287 ms  216.239.57.227  16   388 ms   362 ms   343 ms  216.239.62.153  17     *        *        *     Request timed out.  18   436 ms   357 ms   364 ms  8.8.8.8 Trace complete. after intface goes down and comes back up I receive hsrp confirming its active switch for the certain subnet but still not able to reach internet. CORE_1_TESTE# 01:25:51: %HSRP-6-STATECHANGE: Vlan6 Grp 5 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan7 Grp 6 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan8 Grp 7 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan10 Grp 9 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan12 Grp 18 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan19 Grp 11 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan24 Grp 23 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan17 Grp 205 state Standby -> Active 01:25:51: %HSRP-6-STATECHANGE: Vlan45 Grp 45 state Standby -> Active trace results C:\Users\lucas>tracert -d 8.8.8.8 Tracing route to 8.8.8.8 over a maximum of 30 hops   1     1 ms    18 ms    20 ms  192.168.9.1   2    <1 ms     1 ms     1 ms  10.0.100.1   3     1 ms     1 ms     1 ms  10.0.101.1   4     2 ms     2 ms     1 ms  192.168.1.1   5     *        *        *     Request timed out.   6    98 ms   157 ms    97 ms  10.16.16.3   7   117 ms   127 ms    98 ms  10.16.17.1   8   156 ms   113 ms   142 ms  41.72.61.70   9   190 ms   192 ms   217 ms  197.149.148.105  10   293 ms   352 ms   288 ms  197.149.151.4  11   268 ms   298 ms   336 ms  185.148.112.22  12   329 ms   312 ms   337 ms  193.136.250.20  13   327 ms   358 ms     *     216.239.49.242  14   209 ms   217 ms   227 ms  209.85.245.237  15   298 ms   222 ms   232 ms  216.239.57.227  16   357 ms   312 ms     *     216.239.62.153  17     *        *        *     Request timed out.  18     *        *        *     Request timed out.  19     *        *        *     Request timed out.  20     *        *        *     Request timed out.  21     *        *        *     Request timed out.  22     *        *        *     Request timed out.  23     *        *        *     Request timed out.  24     *        *        *     Request timed out.  25     *        *        *     Request timed out.  26     *        *        *     Request timed out.  27     *        *        *     Request timed out.  28     *        *        *     Request timed out.  29     *        *        *     Request timed out.  30     *        *        *     Request timed out. Trace complete. ... View more