Connecting Cisco 3750 to 9300

upen desai · ‎03-26-2019

hi

I hope you can help, I have a Cisco Core 3750 which is hosting all the SVI for Server, Storage, Firewall, ISP, there is another

set of 3850 switches connected which is hosting the SAN.

Cisco 3750 - 192.1.1.217, 10.70.0.254, 10.11.0.254

Cisco 3850 - 10.70.0.250

Cisco 9300 - 192.1.1.220

I have configured a newer set of Cisco 9300 switches as part of kit refresh that i am doing.

I have connected the 9300 to the 3750 successfully and connectivity seems to work correctly as well. I am able to ping servers on 10.11.0.0.

I am however not so sure about the default routes which i have setup on the 9300 and I am not able to ping any nodes on 10.70.0.0/24

I have attached the network diagram if it help and also the config of the switches.

I am not able ping the old SAN which is connected the Cisco 3850. The SAN has an up of 10.70.0.241, 10.70.0.242. Connectivity is fine from the old kit, the issues only lies with the 9300.

please let me know if you need any additional info.

balaji.bandi · ‎03-26-2019

Can you post below output from 9300

show ip interface brief

show etherchannel summary

from 3750

show you post show ip route.

BB

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Deepak Kumar · ‎03-26-2019

Hi,

Share below output:

show ip interface brief

show etherchannel summary

show interface trunk

from both switches.

Regards,

Deepak Kumar

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

upen desai · ‎03-27-2019

hello

As requested below is the out from the Cisco 3750 and the Cisco 9300 switch

cisco 9300 config

HAM-001-FP-Core-S1#sh ip route

Gateway of last resort is 192.1.1.151 to network 0.0.0.0

S* 0.0.0.0/0 [1/0] via 192.1.1.151
192.1.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.1.1.0/24 is directly connected, Vlan1
L 192.1.1.220/32 is directly connected, Vlan1
HAM-001-FP-Core-S1#sh etherch
HAM-001-FP-Core-S1#sh etherchannel sum

Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
40 Po40(SU) LACP Te1/1/1(P) Te1/1/2(P) Te2/1/1(P)
Te2/1/2(P)

HAM-001-FP-Core-S1#sh ip int bri
Interface IP-Address OK? Method Status Protocol
Vlan1 192.1.1.220 YES manual up up
GigabitEthernet0/0 unassigned YES NVRAM administratively down down
Te1/0/1 unassigned YES unset down down
Te1/0/2 unassigned YES unset down down
Te1/0/3 unassigned YES unset down down
Te1/0/4 unassigned YES unset down down
Te1/0/5 unassigned YES unset up up
Te1/0/6 unassigned YES unset up up
Te1/0/7 unassigned YES unset up up
Te1/0/8 unassigned YES unset up up
Te1/1/1 unassigned YES unset up up
Te1/1/2 unassigned YES unset up up
Te2/0/5 unassigned YES unset up up
Te2/0/6 unassigned YES unset up up
Te2/0/7 unassigned YES unset up up
Te2/0/8 unassigned YES unset up up
Te2/1/1 unassigned YES unset up up
Te2/1/2 unassigned YES unset up up

Port-channel40 unassigned YES unset up up
HAM-001-FP-Core-S1#sh int trunk

Port Mode Encapsulation Status Native vlan
Te1/0/5 on 802.1q trunking 1
Te1/0/7 on 802.1q trunking 1
Te2/0/5 on 802.1q trunking 1
Te2/0/7 on 802.1q trunking 1
Po40 on 802.1q trunking 6

Port Vlans allowed on trunk
Te1/0/5 7-8,10-11,17,69
Te1/0/7 7-8,10-11,17,69
Te2/0/5 7-8,10-11,17,69
Te2/0/7 7-8,10-11,17,69
Po40 1-4094

Port Vlans allowed and active in management domain
Te1/0/5 7-8,10-11,17,69
Te1/0/7 7-8,10-11,17,69
Te2/0/5 7-8,10-11,17,69
Te2/0/7 7-8,10-11,17,69
Po40 1,6-8,10-11,16-17,64,69-70

Port Vlans in spanning tree forwarding state and not pruned
Te1/0/5 7-8,10-11,17,69
Te1/0/7 7-8,10-11,17,69
Te2/0/5 7-8,10-11,17,69
Te2/0/7 7-8,10-11,17,69
Po40 1,6-8,10-11,16-17,64,69-70
HAM-001-FP-Core-S1#

-------------------------------------------------

Cisco 3750 config
---------------------------------------------

HAM-000-FP-CORE-S1#sh ip route

Gateway of last resort is 192.64.1.99 to network 0.0.0.0

S* 0.0.0.0/0 [1/0] via 192.64.1.99
10.0.0.0/8 is variably subnetted, 128 subnets, 5 masks
C 10.6.0.0/24 is directly connected, Vlan26
L 10.6.0.251/32 is directly connected, Vlan26
R 10.6.26.0/24 [120/3] via 10.100.1.10, 00:00:12, Vlan300
S 10.6.211.0/24 [1/0] via 10.98.0.253
R 10.7.26.0/24 [120/3] via 10.100.1.10, 00:00:12, Vlan300
C 10.8.0.0/24 is directly connected, Vlan8
L 10.8.0.252/32 is directly connected, Vlan8
C 10.11.0.0/24 is directly connected, Vlan11
L 10.11.0.252/32 is directly connected, Vlan11
S 10.11.41.0/24 [1/0] via 10.98.0.253
S 10.64.3.0/24 [1/0] via 10.98.0.253
C 10.69.1.0/24 is directly connected, Vlan69
L 10.69.1.251/32 is directly connected, Vlan69
C 10.70.0.0/24 is directly connected, Vlan70
L 10.70.0.251/32 is directly connected, Vlan70
C 10.98.0.248/29 is directly connected, Vlan98
L 10.98.0.254/32 is directly connected, Vlan98
C 10.100.1.0/30 is directly connected, GigabitEthernet1/0/1
L 10.100.1.1/32 is directly connected, GigabitEthernet1/0/1
R 10.100.1.4/30 [120/1] via 10.100.1.10, 00:00:15, Vlan300
C 10.100.1.8/30 is directly connected, Vlan300
L 10.100.1.9/32 is directly connected, Vlan300
C 10.102.0.0/24 is directly connected, Vlan102
L 10.102.0.254/32 is directly connected, Vlan102
R 10.150.26.0/24 [120/3] via 10.100.1.10, 00:00:15, Vlan300
R 10.152.103.160/28 [120/3] via 10.100.1.10, 00:00:16, Vlan300
R 10.168.26.0/24 [120/3] via 10.100.1.10, 00:00:16, Vlan300
S 10.168.211.0/24 [1/0] via 10.98.0.253
C 10.199.0.0/24 is directly connected, Vlan199
L 10.199.0.254/32 is directly connected, Vlan199
R 10.250.212.80/30 [120/2] via 10.100.1.10, 00:00:16, Vlan300
172.29.0.0/24 is subnetted, 1 subnets
R 172.29.12.0 [120/3] via 10.100.1.10, 00:00:16, Vlan300
172.31.0.0/27 is subnetted, 1 subnets
R 172.31.2.128 [120/3] via 10.100.1.10, 00:00:16, Vlan300
192.1.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.1.1.0/24 is directly connected, Vlan1
L 192.1.1.217/32 is directly connected, Vlan1
192.6.168.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.6.168.0/24 is directly connected, Vlan168
L 192.6.168.217/32 is directly connected, Vlan168
192.7.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.7.1.0/24 is directly connected, Vlan7
L 192.7.1.217/32 is directly connected, Vlan7
S 192.10.1.0/24 [1/0] via 192.64.1.99
192.64.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.64.1.0/24 is directly connected, Vlan64
L 192.64.1.217/32 is directly connected, Vlan64

HAM-000-FP-CORE-S1#sh ether summary

Number of channel-groups in use: 5
Number of aggregators: 5

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
6 Po6(SU) LACP Gi3/0/10(I) Gi4/0/10(P)
9 Po9(SD) -
10 Po10(SU) - Te1/1/1(P) Te2/1/1(D) Te3/1/1(P)
Te4/1/1(D)
40 Po40(SU) LACP Te1/1/2(P) Te2/1/2(P) Te3/1/2(P)
Te4/1/2(P)
48 Po48(SU) LACP Gi1/0/21(P) Gi1/0/22(P) Gi1/0/23(P)
Gi1/0/24(P) Gi2/0/21(P) Gi2/0/22(P)
Gi2/0/23(P) Gi2/0/24(P)

HAM-000-FP-CORE-S1#sh int trunk

Port Mode Encapsulation Status Native vlan
Gi2/0/5 on 802.1q trunking 16
Gi2/0/6 on 802.1q trunking 26
Gi3/0/7 on 802.1q trunking 6
Gi3/0/8 on 802.1q trunking 6
Gi3/0/10 on 802.1q trunking 26
Gi4/0/2 on 802.1q trunking 6
Gi4/0/3 on 802.1q trunking 6
Gi4/0/4 on 802.1q trunking 6
Gi4/0/5 on 802.1q trunking 6
Gi4/0/6 on 802.1q trunking 6
Gi4/0/7 on 802.1q trunking 6
Gi4/0/8 on 802.1q trunking 6
Po6 on 802.1q trunking 26
Po10 on 802.1q trunking 6
Po40 on 802.1q trunking 6
Po48 on 802.1q trunking 6

Port Vlans allowed on trunk
Gi2/0/5 1-4094
Gi2/0/6 1-4094
Gi3/0/7 1-4094
Gi3/0/8 1-4094
Gi3/0/10 1-4094
Gi4/0/2 1-4094
Gi4/0/3 1-4094
Gi4/0/4 1-4094
Gi4/0/5 1-4094
Gi4/0/6 1-4094
Gi4/0/7 1-4094
Gi4/0/8 1-4094
Po6 1-4094
Po10 1-4094
Po40 1-4094
Po48 1-4094

Port Vlans allowed and active in management domain
Gi2/0/5 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi2/0/6 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi3/0/7 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi3/0/8 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi3/0/10 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/2 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/3 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/4 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/5 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/6 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/7 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/8 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po6 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po10 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po40 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po48 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300

Port Vlans in spanning tree forwarding state and not pruned
Gi2/0/5 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300

Port Vlans in spanning tree forwarding state and not pruned
Gi2/0/6 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi3/0/7 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi3/0/8 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi3/0/10 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/2 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/3 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/4 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/5 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/6 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/7 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Gi4/0/8 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po6 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po10 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po40 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
Po48 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300
HAM-000-FP-CORE-S1#sh ip int bri
Interface IP-Address OK? Method Status Protocol
Vlan1 192.1.1.217 YES NVRAM up up
Vlan7 192.7.1.217 YES NVRAM up up
Vlan8 10.8.0.252 YES manual up up
Vlan10 unassigned YES NVRAM up up
Vlan11 10.11.0.252 YES manual up up
Vlan16 10.6.1.217 YES NVRAM administratively down down
Vlan17 10.7.1.217 YES NVRAM administratively down down
Vlan19 192.19.1.217 YES NVRAM up down
Vlan26 10.6.0.251 YES NVRAM up up
Vlan64 192.64.1.217 YES NVRAM up up
Vlan69 10.69.1.251 YES manual up up
Vlan70 10.70.0.251 YES manual up up
Vlan98 10.98.0.254 YES manual up up
Vlan99 10.99.0.254 YES manual administratively down down
Vlan101 192.101.1.217 YES NVRAM up down
Vlan102 10.102.0.254 YES manual up up
Vlan150 10.150.101.217 YES NVRAM up down
Vlan168 192.6.168.217 YES manual up up
Vlan199 10.199.0.254 YES manual up up
Vlan300 10.100.1.9 YES manual up up
FastEthernet0 unassigned YES NVRAM administratively down down
GigabitEthernet1/0/1 10.100.1.1 YES manual up up
GigabitEthernet1/0/2 unassigned YES unset up up
GigabitEthernet1/0/3 unassigned YES unset down down
GigabitEthernet1/0/4 unassigned YES unset up up
GigabitEthernet1/0/5 unassigned YES unset up up
GigabitEthernet1/0/6 unassigned YES unset up up
GigabitEthernet1/0/7 unassigned YES unset up up
GigabitEthernet1/0/8 unassigned YES unset up up
GigabitEthernet1/0/9 unassigned YES unset down down
GigabitEthernet1/0/10 unassigned YES unset up up
GigabitEthernet1/0/11 unassigned YES unset up up
GigabitEthernet1/0/12 unassigned YES unset up up
GigabitEthernet1/0/13 unassigned YES unset up up
GigabitEthernet1/0/14 unassigned YES unset up up
GigabitEthernet1/0/15 unassigned YES unset up up
GigabitEthernet1/0/16 unassigned YES unset up up
GigabitEthernet1/0/17 unassigned YES unset up up
GigabitEthernet1/0/18 unassigned YES unset up up
GigabitEthernet1/0/19 unassigned YES unset up up
GigabitEthernet1/0/20 unassigned YES unset up up
GigabitEthernet1/0/21 unassigned YES unset up up
GigabitEthernet1/0/22 unassigned YES unset up up
GigabitEthernet1/0/23 unassigned YES unset up up
GigabitEthernet1/0/24 unassigned YES unset up up
GigabitEthernet1/1/1 unassigned YES unset administratively down down
GigabitEthernet1/1/2 unassigned YES unset administratively down down
GigabitEthernet1/1/3 unassigned YES unset administratively down down
GigabitEthernet1/1/4 unassigned YES unset administratively down down
Te1/1/1 unassigned YES unset up up
Te1/1/2 unassigned YES unset up up
GigabitEthernet2/0/1 unassigned YES unset up up
GigabitEthernet2/0/2 unassigned YES unset up up
GigabitEthernet2/0/3 unassigned YES unset up up
GigabitEthernet2/0/4 unassigned YES unset up up
GigabitEthernet2/0/5 unassigned YES unset up up
GigabitEthernet2/0/6 unassigned YES unset up up
GigabitEthernet2/0/7 unassigned YES unset up up
GigabitEthernet2/0/8 unassigned YES unset up up
GigabitEthernet2/0/9 unassigned YES unset up up
GigabitEthernet2/0/10 unassigned YES unset up up
GigabitEthernet2/0/11 unassigned YES unset up up
GigabitEthernet2/0/12 unassigned YES unset up up
GigabitEthernet2/0/13 unassigned YES unset up up
GigabitEthernet2/0/14 unassigned YES unset up up
GigabitEthernet2/0/15 unassigned YES unset up up
GigabitEthernet2/0/16 unassigned YES unset up up
GigabitEthernet2/0/17 unassigned YES unset up up
GigabitEthernet2/0/18 unassigned YES unset up up
GigabitEthernet2/0/19 unassigned YES unset up up
GigabitEthernet2/0/20 unassigned YES unset up up
GigabitEthernet2/0/21 unassigned YES unset up up
GigabitEthernet2/0/22 unassigned YES unset up up
GigabitEthernet2/0/23 unassigned YES unset up up
GigabitEthernet2/0/24 unassigned YES unset up up
GigabitEthernet2/1/1 unassigned YES unset administratively down down
GigabitEthernet2/1/2 unassigned YES unset administratively down down
GigabitEthernet2/1/3 unassigned YES unset administratively down down
GigabitEthernet2/1/4 unassigned YES unset administratively down down
Te2/1/1 unassigned YES unset down down
Te2/1/2 unassigned YES unset up up
GigabitEthernet3/0/1 unassigned YES unset administratively down down
GigabitEthernet3/0/2 unassigned YES unset administratively down down
GigabitEthernet3/0/3 unassigned YES unset administratively down down
GigabitEthernet3/0/4 unassigned YES unset administratively down down
GigabitEthernet3/0/5 unassigned YES unset down down
GigabitEthernet3/0/6 unassigned YES unset down down
GigabitEthernet3/0/7 unassigned YES unset up up
GigabitEthernet3/0/8 unassigned YES unset up up
GigabitEthernet3/0/9 unassigned YES unset down down
GigabitEthernet3/0/10 unassigned YES unset up up
GigabitEthernet3/0/11 unassigned YES unset down down
GigabitEthernet3/0/12 unassigned YES unset down down
GigabitEthernet3/1/1 unassigned YES unset administratively down down
GigabitEthernet3/1/2 unassigned YES unset administratively down down
GigabitEthernet3/1/3 unassigned YES unset administratively down down
GigabitEthernet3/1/4 unassigned YES unset administratively down down
Te3/1/1 unassigned YES unset up up
Te3/1/2 unassigned YES unset up up
GigabitEthernet4/0/1 unassigned YES unset down down
GigabitEthernet4/0/2 unassigned YES unset up up
GigabitEthernet4/0/3 unassigned YES unset up up
GigabitEthernet4/0/4 unassigned YES unset up up
GigabitEthernet4/0/5 unassigned YES unset up up
GigabitEthernet4/0/6 unassigned YES unset up up
GigabitEthernet4/0/7 unassigned YES unset up up
GigabitEthernet4/0/8 unassigned YES unset up up
GigabitEthernet4/0/9 unassigned YES unset down down
GigabitEthernet4/0/10 unassigned YES unset up up
GigabitEthernet4/0/11 unassigned YES unset down down
GigabitEthernet4/0/12 unassigned YES unset down down
GigabitEthernet4/1/1 unassigned YES unset administratively down down
GigabitEthernet4/1/2 unassigned YES unset administratively down down
GigabitEthernet4/1/3 unassigned YES unset administratively down down
GigabitEthernet4/1/4 unassigned YES unset administratively down down
Te4/1/1 unassigned YES unset down down
Te4/1/2 unassigned YES unset up up
Port-channel6 unassigned YES unset up up
Port-channel9 unassigned YES unset down down
Port-channel10 unassigned YES unset up up
Port-channel40 unassigned YES unset up up
Port-channel48 unassigned YES unset up up
HAM-000-FP-CORE-S1#

Deepak Kumar · ‎03-27-2019

Hi,

What is connected on PortChannel 6 on 3750 switch?

Po6 on 802.1q trunking 26

Here, VLAN 26 is showing as Native VLAN? Is it correct?

Also Looking VLAN mismatch between both switches. Is it correct? What is VLAN for SAN?

Po40 1,6-8,10-11,16-17,64,69-70

Po48 1,6-8,10-11,16-17,26,63-64,68-70,96-99,102,168,199,300

Regards,

Deepak Kumar

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

upen desai · ‎03-27-2019

Hello Deepak

PO 6 - this etherchannel is for the edge switch, mainly our office area. vlan 26 is the office lan.

Po40 - SAN is on VLAN70, which I have trunked across both set of switches.

Everything before VLAN 70 is to do with servers, SAN, vmware etc.

Everything after VLAN 70 is to do with ISP, wifi etc.

so looking at the way in which I have setup the default route on the Cisco 9300. Does it look correct.

Thank you