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- About Abzal
11-19-2018
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Member since
08-23-2012
579
Posts
300
Helpful
92
Solutions
11-12-2018
02:16 AM
Topology and router config would be helpful. So I'll be just guessing. Your router advertising new subnets 10.x.4.0/22. Is neighbor router getting it over BGP? Could be that reverse router doesn't know path back to your NAT router.
try on NAT router after you apply new config
#clear ip bgp soft * out
... View more
11-09-2018
04:33 AM
Device is old and EoS/EoL was announced. But if you have active smartnet contract you may try to replace it by opening TAC case.
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11-06-2018
02:39 AM
Hi,
I'm assuming you're doing NAT on your Internet edge router. Possible issue here that subnet 192.168.1.0/24 is not NATed. Try to ping with source 192.168.1.1:
ping x.x.x.x source 192.168.1.2
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11-05-2018
01:19 AM
Hi David,
Quick question. I have MP-BGP core which consists from two Cat6800 running iBGP between them. OSPF is running as IGP. There is also CORP VRF where all corporate subnets are. Recently I added two prefixes to both core switches BGP and installing static route pointing to NULL0(AD 254). Strange thing is one core see these prefixes in local in VPNv4 routing table second see only route that is being advertised by first CORE but it's local route is not showing up which also pointing to NULL0.
My quess is that is because of AD iBGP is preferred because it has 200. Am I correct? Strange thing is both CORE switches see previously added prefixes local and iBGP advertised by neighbor. I'm confused a little bit.
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10-26-2018
05:55 AM
Basically you should advertise your lan subnets with worse metric toward Cisco ACI. We do that by as-path prepending of your AS number on Nexus7k toward Cisco ACI. Similar action should be done at DC2 Nexus7k. After path over Cisco ACI would be less preferable.
ip prefix-list 100 permit 10.10.10.0/24
ip prefix-list 100 permit 10.10.20.0/24
ip prefix-list 100 permit 10.10.30.0/24
route-map <name of route-map> permit 10
match ip prefix-list 100
set as-path prepend <your AS> <your AS> <your AS>
neighbor <Cisco ACI> route-map <name of route-map> out
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10-23-2018
05:58 AM
Hm my reply looks like got deleted.
With router on a stick you can utilize more features of L3 router such like netflow, traffic shaping/policing. But if there is no need in such features not much difference except performance.
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10-23-2018
05:48 AM
If your FEX are dual homed then during disruptive upgrade it would reload all FEXes during upgrade of primary N5K. But if it is vPC single homed you can upgrade N5K one by one. It works if your hosts are vPC connected to both single homed FEXes. If I have time I can test it out.
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10-23-2018
05:13 AM
Here you can find config example for router on a stick - https://learningnetwork.cisco.com/docs/DOC-23481
#2 option much easier config wise, example - https://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/14976-50.html
But in #2 option you would need additionally set up p2p link between router and 3560 switch if needed.
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10-23-2018
05:06 AM
Usually tuning QoS helps. Have you tested bandwidth with iperf like software. In our corp network I have 3750X with version 15.0(2)SE7 which perfectly handling 5-7Gbit traffic. You can try to upgrade it.
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Hi,
I think it's possible.
Is 3560 gateway for your Local network? If yes you will need to put 2 IP routes on 3560.
Let's say VPN users are in subnet 10.100.10.0/24. And firewall connected to ISP-A has IP 10.30.170.2. Assuming that VPN and NAT on firewalls are working.
3560:
conf t
ip route 0.0.0.0 0.0.0.0 10.30.170.2 // to reach the internet
ip route 10.100.10.0 255.255.255.0 10.30.170.1 // to reach VPN users
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Hi,
Can R1 and R2 see other subnets except own subnets? Do they see BGP neighbors R6, R3?
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Hi,
Configure port connected to netgear as:
int g1/0/x
switchport mode access
So that two devices will be on one subnet 192.168.1.0/24. Then assign to netgear's interface which is connected to 3750 IP address from 192.168.1.0/24 subnet (in you configuration I assume it is 192.168.1.1/24). Then you need to put on netgear static IP route to your local subnet 192.168.3.0/24 and point it to IP address of 3750 which is 192.168.1.250/24.
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12-27-2013
09:56 PM
Hi, Here is simple config as example. PCs config: 192.168.0.2/24 gateway: 192.168.0.1 2621 config: conf t int f0/0 desc Connected to PC ip add 192.168.0.1 255.255.255.0 no shut int f0/1 desc Connected to switch ip add 192.168.1.2 255.255.255.248 no shut ip route 0.0.0.0 0.0.0.0 192.168.1.1 end Router config (connected to Internet): conf t int f0/0 desc LAN ip add 192.168.1.1 255.255.255.248 no shut ip nat inside int f0/1 desc Internet ip add 1.1.1.2 255.255.255.252 no shut ip nat outside access-list 10 permit 192.168.0.0 0.0.0.255 ip nat inside source list 10 interface f0/1 overload ip route 0.0.0.0 0.0.0.0 1.1.1.1 ip route 192.168.0.0 0.0.0.255 192.168.1.2 end On switch you just need to make sure that ports of both routers on the same VLAN. For example: conf t vlan 10 int g1/0/2 desc Connected to 2621 switchport mode access switchport access vlan 10 spanning-tree portfast int g1/0/1 desc Connected Internet router switchport mode access switchport access vlan 10 spanning-tree portfast int vlan 10 desc Mgmt ip add 192.168.1.3 255.255.255.248 no shut end Hope it will help. Best regards, Abzal
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12-27-2013
09:41 PM
Hi, First of all to make PBR working on 3750 you should have IP Base image on the switch. Second SDM template should be set to prefer routing. https://supportforums.cisco.com/community/netpro/network-infrastructure/routing/blog/2011/03/31/pbr-on-switches-37503560 Do you want to reroute traffic sourced from 172.18.0.0/16 and 172.20.0.0/16 subents to 172.22.0.0/16? if so, then PBR is ip access-list extended redirect permit ip 172.18.0.0 0.255.255 172.22.0.0 0.0.255.255 permit ip 172.20.0.0 0.255.255 172.22.0.0 0.0.255.255 route-map redirect permit 10 match ip address redirect set ip next-hop 172.16.52.1 Hope it will help. Best regards, Abzal
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12-26-2013
10:07 PM
Hi, As John said you have to add on 6506 on network B ip helper under SVI VLAN 50 interface to make this work. Also is dhcp server accessible from network B? Hope it will help. Best regards, Abzal
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11-12-2018
Topology and router config would be helpful. So I'll be just guessing.
Your router advertising new s...
11-09-2018
Device is old and EoS/EoL was announced. But if you have active smartnet
contract you may try to rep...
11-06-2018
Hi, I'm assuming you're doing NAT on your Internet edge router. Possible
issue here that subnet 192....
10-26-2018
Basically you should advertise your lan subnets with worse metric toward
Cisco ACI. We do that by as...
10-23-2018
Hm my reply looks like got deleted. With router on a stick you can
utilize more features of L3 route...
10-23-2018
If your FEX are dual homed then during disruptive upgrade it would
reload all FEXes during upgrade o...
10-23-2018
Here you can find config example for router on a stick -
https://learningnetwork.cisco.com/docs/DOC-...
10-23-2018
Usually tuning QoS helps. Have you tested bandwidth with iperf like
software. In our corp network I ...
12-27-2013
Hi,Here is simple config as example.PCs config:192.168.0.2/24gateway:
192.168.0.12621 config:conf ti...
12-27-2013
Hi,First of all to make PBR working on 3750 you should have IP Base
image on the switch. Second SDM ...
Public Statistics
| Date Registered | 08-23-2012 04:23 AM |
| Date Last Visited | 11-19-2018 02:47 AM |
| Total Messages Posted | 579 |
| Total Helpful Votes Received | 300 |
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