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February 23rd, 2015 02:00
Multihome routing at 8132F
Hello,
I would like to know did 8132F support multihome routing?
I have enabled 'IP routing' at switch already. There are two subnet for inter routing active now.
Example
Subnet A: 111.222.333.0/24
Subnet B: 555.666.777.0/24
The switch itself default route is 111.222.333.1/24 to Internet
All traffic must via the Switch to allow routing between them those two subnet at above.
However, Subnet B could not allow via Switch's default gateway and require to routing thru another gateway 555.666.777.1/24
How should I config it to support multi-home routing?
Thanks in advance.
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machiasiaweb2
1 Rookie
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110 Posts
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February 23rd, 2015 22:00
Hello
Thanks for response. Let me update to near real situation.
Example
Subnet A: 111.222.333.0/24
Subnet B: 555.666.777.0/24
The switch itself default route to 172.16.0.6/24 to Internet
Subnet B require using another gateway 172.16.0.5/24 to Internet
Added a static route according to your suggestion.
'ip route 555.666.777.0 255.255.255.0 172.16.0.5'
Following is part of config
---------------------------------------------------
ip default-gateway 172.16.0.6
ip route 0.0.0.0 0.0.0.0 172.16.0.6 253
ip route 555.666.777.0 255.255.255.0 172.16.0.5
interface vlan 1
ip address 111.222.333.254 255.255.255.0
ip address 555.666.777.254 255.255.255.0 secondary
interface vlan 100
ip address 172.16.0.1 255.255.255.248
and its route table now
---------------------------------------------
S 0.0.0.0/0 [253/0] via 172.16.0.6, Vl100
C 111.222.333.0/27 [0/1] directly connected, Vl1
C 555.666.777.0/27 [0/1] directly connected, Vl1
S 555.666.777.0/24 [1/0] via 172.16.0.5, Vl100
C 172.16.0.0/29 [0/1] directly connected, Vl100
-------------------------------------------------------
From the host machine for Subnet B (555.666.777.0/24), it can successful to test ping to gateway 172.16.0.5.
and the gateway (firewall) can ping back the those Subnet B host as well.
However, while traceroute to Internet from Subnet B. It was fail and traceroute report like following
#traceroute 8.8.8.8
1 111.222.333.254 1ms 1ms 1ms
2 * * *
3 * * *
4 * * *
It looks still using the default to route out as I can capture packet is routing thru default gateway (172.16.0.6). Not the gateway where I added static route (172.16.0.5)
Could you please further advise?
Thanks!