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Cisco Bug: CSCvu34410 - ENH.BDI is not supported by ATM interface.

Last Modified

Jun 05, 2020

Products (1)

  • Cisco 1000 Series Integrated Services Routers

Known Affected Releases

Fuji-16.9.2

Description (partial)

Symptom:
The C1117 using Concurrent Bridging and ATM Routed Bridge Encapsulation.  This configuration is working apart from not being able to ping the local interface.

No real production impact, all data plane traffic still work. However, admin could not ping the router local IPv4 interface.


### The interface ###

TEST-S009-RT01#show ip int bri | in ATM
ATM0/3/0               unassigned      YES unset  up                    up      
ATM0/3/0.110           59.153.21.5     YES manual up                    up    

### Ping Remote ###

TEST-S009-RT01#ping 59.153.21.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 59.153.21.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/15/16 ms

### BGP ###

TEST-S009-RT01#show bgp all sum | in 59.153.21.4
59.153.21.4     4        17484  237602  215975    32968    0    0 5w0d           15

### Ping local interface ###

TEST-S009-RT01#ping 59.153.21.5                 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 59.153.21.5, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

### ARP ###

It seems there is no ARP entry for the local interface even through there is for the remote interface.

TEST-S009-RT01#show arp
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  59.153.21.4            49   70e4.220d.3b1e  802.1Q ATM0/3/0.110
Internet  59.153.21.5             0   Incomplete      ARPA

Conditions:
Use ISR 1000 routers, like Model: C1117-4PLTELA.
Software version 16.9.2 or similar.
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